first upload to git

webproject/dashboard/admin.py

+from django.contrib import admin
+
+# Register your models here.

webproject/dashboard/apps.py

+from django.apps import AppConfig
+
+
+class DashboardConfig(AppConfig):
+    name = 'dashboard'

webproject/dashboard/models.py

+from django.db import models
+
+# Create your models here.

webproject/dashboard/tests.py

+from django.test import TestCase
+
+# Create your tests here.

webproject/dashboard/views.py

+from re import X
+from xlsxwriter import workbook
+import management
+from time import sleep
+from django.shortcuts import redirect, render
+from datetime import date, datetime, timedelta
+from pos.models import *
+from management.models import Product
+from django.contrib.auth.decorators import login_required
+from management.permission_page import pos_manager_only
+import xlsxwriter 
+import glob
+from icecream import ic
+# Create your views here.
+
+# https://linuxhint.com/download-the-file-in-django/
+import mimetypes
+# import os module
+import os
+# Import HttpResponse module
+from django.http.response import HttpResponse
+
+
+def download_file(request, filename=''):
+    if filename == '':
+        filename = 'constFile/example_for_add_product.xlsx'
+    path = open(filename, 'rb')
+    # Set the mime type
+    mime_type, _ = mimetypes.guess_type(filename)
+    # Set the return value of the HttpResponse
+    response = HttpResponse(path, content_type=mime_type)
+    # Set the HTTP header for sending to browser
+    response['Content-Disposition'] = "attachment; filename=%s" % filename
+    # Return the response value
+    return response
+    
+
+@login_required
+@pos_manager_only
+def dashborad(req):
+    context=dict()
+    userlabel = str(req.user.id)+'_'+str(req.user)
+    print('------------------------------------xlsx file --------------------------------------------------')
+    for name in glob.glob('*.xlsx'):
+        print(name)
+        try:
+            if userlabel in name:
+                os.remove(name)
+        except:
+
+            print("can't delete filename:",name)
+
+    if req.method == 'POST':
+        #pick time range
+        print(req.POST)
+        context['mode'] = 'post'
+    else :
+        strnowtime = datetime.now().strftime("%Y%m%d%H%M%S")
+        labelfilexlsx = userlabel+'_'+strnowtime
+        today_filename = 'today_of_'+labelfilexlsx+'.xlsx'
+        last_week_filename = 'last_week_of_'+labelfilexlsx+'.xlsx'
+        last_month_filename = 'last_month_of_'+labelfilexlsx+'.xlsx'
+        context['today_filename'] = today_filename
+        context['last_week_filename'] = last_week_filename
+        context['last_month_filename'] = last_month_filename
+        context['today'] = billlistsNdays(filename=today_filename)
+        context['week'] = billlistinrange(date.today() - timedelta(days=7),date.today(),last_week_filename)
+        context['month'] = billlistinrange(date.today() - timedelta(days=30),date.today(),last_month_filename)
+    return render(req,'dashboard.html',context)
+
+def billlistinrange(start,end,filename=''):
+    bills = Bill.objects.filter(created__gte=start).filter(created__lt=end)
+    data = dict()
+    soldValueInDay = dict()
+    dataset = dict()
+    nday = (end-start).days
+    sumSoldValue = 0
+    for i in bills:
+        listsInBill = BillList.objects.filter(bill=i)
+        datekey = i.created.strftime('%d/%m/%Y')
+        if soldValueInDay.get(datekey) == None : soldValueInDay[datekey] = 0
+        for j in listsInBill:
+            v = j.product.price * j.quantity
+            soldValueInDay[datekey] += v
+            sumSoldValue += v
+            if dataset.get(j.product.id) != None:
+                # print(dataset.get(j.product.id))
+                dataset[j.product.id]['sold']+=int(j.quantity)
+            else :
+                # id : autoincrement field in db
+                dataset[j.product.id] = {
+                    'id':j.product.product_id,
+                    'name':j.product.name,
+                    'price':j.product.price,
+                    'sold':j.quantity
+                }
+    if filename!='': 
+        workbook = xlsxwriter.Workbook(filename)
+        sheet_by_day = workbook.add_worksheet('days')
+        sheet_by_product = workbook.add_worksheet('products')
+        columns_by_p = [
+            {'header':'id'},
+            {'header':'name'},
+            {'header':'price'},
+            {'header':'sold'},
+            {'header':'value'},
+            {'header':'sold/day'},
+            {'header':'value/day'},
+               
+        ]
+        columns_by_d = [
+            {'header':'day'},
+            {'header':'value'},
+            
+        ]
+
+        product_tableArea = 'A1:G'+str(len(dataset.keys())+1)
+        sheet_by_product.add_table(product_tableArea,{'columns':columns_by_p,'style':None})
+        row_counter = 2
+    for key in dataset.keys():
+        tmp = dataset[key]
+        val = tmp['price'] * tmp['sold']
+        tmp['value'] = val
+        tmp['soldperday'] = round(tmp['sold']/nday,2)
+        tmp['valueperday'] = round(val/nday,2)
+        dataset[key] = tmp
+        if filename!='':
+            cellstr = 'A'+str(row_counter)
+            sheet_by_product.write_row(cellstr,list(tmp.values()))
+            row_counter+=1
+    if filename!='':
+        keysol = list(soldValueInDay.keys())
+        day_tableArea = 'A1:B'+str(len(keysol)+1)
+        sheet_by_day.add_table(day_tableArea,{'columns':columns_by_d, 'style':None})
+        for i in range(len(keysol)) :
+            cellstr = 'A'+str(i+2)
+            sheet_by_day.write_row(cellstr,[keysol[i],soldValueInDay.get(keysol[i])])
+       
+        workbook.close()
+
+    data['dataProduct'] = dataset
+    data['soldValueInDay'] = soldValueInDay
+    x_axis = []
+    y_axis = []
+    for i in range(nday):
+        k = (start+timedelta(days=i)).strftime('%d/%m/%Y')
+        x_axis.append(k)
+        y_axis.append(0) if soldValueInDay.get(k) == None else y_axis.append(float(soldValueInDay.get(k)))  
+
+    data['avgSoldValue'] = [round(float(sumSoldValue)/nday,2)]*nday
+    data['labels'] = x_axis
+    data['data'] = y_axis
+
+    return data
+            
+
+
+
+def billlistsNdays(n=0,filename=''):
+    start_date = date.today() - timedelta(days=n)
+    bills = Bill.objects.filter(created__gte=start_date)
+    dataset = {}
+    for i in bills:
+        listsInBill = BillList.objects.filter(bill=i)
+        for j in listsInBill:
+            if dataset.get(j.product.id) != None:
+                # print(dataset.get(j.product.id))
+                dataset[j.product.id]['sold']+=int(j.quantity)
+            else :
+                # id : autoincrement field in db
+                dataset[j.product.id] = {
+                    'id':j.product.product_id,
+                    'name':j.product.name,
+                    'price':j.product.price,
+                    'sold':j.quantity
+                }
+    if filename!='':
+        workbook = xlsxwriter.Workbook(filename)
+        sheet = workbook.add_worksheet('products')
+        columns_table = [
+                {'header':'id'},
+                {'header':'name'},
+                {'header':'price'},
+                {'header':'sold'},
+                {'header':'value'}
+            ]
+        
+        tableArea = 'A1:E'+str(len(dataset.keys())+1)
+        sheet.add_table(tableArea,{'style':None,'columns':columns_table})
+        row_counter=2
+    for key in dataset.keys():
+        dataset[key]['value'] = dataset[key]['price'] * dataset[key]['sold']
+        if filename != '' :
+            cellstr = 'A'+str(row_counter)
+            sheet.write_row(cellstr,dataset[key].values())
+    if filename!='':
+        workbook.close()
+
+    return dataset
\ No newline at end of file

webproject/manage.py

+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webproject.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

webproject/management/admin.py

+from django.contrib import admin
+from .models import *
+# Register your models here.
+admin.site.register(Product)
+
+admin.site.register(EmployeeUser)
+
+admin.site.register(FileForSave)
+
+admin.site.register(POSManager)

webproject/management/apps.py

+from django.apps import AppConfig
+
+
+class ManagementConfig(AppConfig):
+    name = 'management'

webproject/management/forms.py

+from django import forms
+from django.db.models import fields
+from .models import Product #,EmployeeUser
+from django.utils.translation import ugettext, ugettext_lazy as _
+from pos.models import Bill
+
+
+class FileForm(forms.Form):
+    docfile = forms.FileField(label='Select a file')
+
+class ProductForm(forms.ModelForm):
+    class Meta:
+        model = Product
+        exclude = ['manager']    
+
+class BillForm(forms.ModelForm):
+    class Meta:
+        model = Bill
+        exclude = ['manager']    
+
+class EmployeeForm(forms.Form):
+    username = forms.CharField(label=_('username '), required=True)
+    password = forms.CharField(label=_('password '), required=True)
+    note = forms.CharField(label=_('note '), required=False)
+
+class SendProductID(forms.Form):
+    pid = forms.CharField(required=False)
+

webproject/management/migrations/0001_initial.py

+# Generated by Django 3.1.4 on 2021-04-16 01:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='FileForSave',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('docfile', models.FileField(upload_to='')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Manager',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('test', models.CharField(max_length=50)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Product',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('product_id', models.CharField(max_length=50)),
+                ('name', models.CharField(max_length=50)),
+                ('description', models.CharField(max_length=50)),
+                ('price', models.DecimalField(decimal_places=2, max_digits=7)),
+                ('quantity', models.IntegerField()),
+                ('category', models.CharField(max_length=50)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='SubUser',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('test', models.CharField(max_length=50)),
+            ],
+        ),
+    ]

webproject/management/migrations/0002_auto_20210416_1414.py

+# Generated by Django 3.2 on 2021-04-16 07:14
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='Manager',
+        ),
+        migrations.DeleteModel(
+            name='SubUser',
+        ),
+    ]

webproject/management/migrations/0003_product_manager_username.py

+# Generated by Django 3.2 on 2021-04-17 07:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0002_auto_20210416_1414'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='product',
+            name='manager_username',
+            field=models.CharField(default=2, max_length=50),
+            preserve_default=False,
+        ),
+    ]

webproject/management/migrations/0004_employeeuser_manager.py

+# Generated by Django 3.2 on 2021-04-21 13:33
+
+import django.contrib.auth.models
+import django.contrib.auth.validators
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('auth', '0012_alter_user_first_name_max_length'),
+        ('management', '0003_product_manager_username'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='EmployeeUser',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('username', models.CharField(max_length=50)),
+                ('password', models.CharField(max_length=15)),
+                ('manager_username', models.CharField(max_length=50)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Manager',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('password', models.CharField(max_length=128, verbose_name='password')),
+                ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
+                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
+                ('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=150, unique=True, validators=[django.contrib.auth.validators.UnicodeUsernameValidator()], verbose_name='username')),
+                ('first_name', models.CharField(blank=True, max_length=150, verbose_name='first name')),
+                ('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
+                ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
+                ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
+                ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
+                ('email', models.EmailField(max_length=254, unique=True, verbose_name='email address')),
+                ('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.Group', verbose_name='groups')),
+                ('user_permissions', models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.Permission', verbose_name='user permissions')),
+            ],
+            options={
+                'verbose_name': 'user',
+                'verbose_name_plural': 'users',
+                'abstract': False,
+            },
+            managers=[
+                ('objects', django.contrib.auth.models.UserManager()),
+            ],
+        ),
+    ]

webproject/management/migrations/0005_delete_manager.py

+# Generated by Django 3.2 on 2021-04-21 13:51
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0004_employeeuser_manager'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='Manager',
+        ),
+    ]

webproject/management/migrations/0006_auto_20210424_1149.py

+# Generated by Django 3.2 on 2021-04-24 04:49
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0005_delete_manager'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='EmployeeUser',
+        ),
+        migrations.AlterField(
+            model_name='product',
+            name='product_id',
+            field=models.CharField(max_length=50, unique=True),
+        ),
+    ]

webproject/management/migrations/0007_employeeuser.py

+# Generated by Django 3.2 on 2021-04-24 06:42
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0006_auto_20210424_1149'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='EmployeeUser',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('note', models.CharField(max_length=15)),
+                ('manager_username', models.CharField(max_length=150)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

webproject/management/migrations/0008_rename_manager_username_employeeuser_create_by.py

+# Generated by Django 3.2 on 2021-04-24 07:36
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0007_employeeuser'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='employeeuser',
+            old_name='manager_username',
+            new_name='create_by',
+        ),
+    ]

webproject/management/migrations/0009_alter_employeeuser_id.py

+# Generated by Django 3.2 on 2021-04-24 07:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0008_rename_manager_username_employeeuser_create_by'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='id',
+            field=models.AutoField(primary_key=True, serialize=False),
+        ),
+    ]

webproject/management/migrations/0010_alter_employeeuser_id.py

+# Generated by Django 3.2 on 2021-04-24 07:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('management', '0009_alter_employeeuser_id'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='id',
+            field=models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+    ]

webproject/management/migrations/0011_alter_employeeuser_create_by.py

+# Generated by Django 3.2 on 2021-04-25 03:51
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0010_alter_employeeuser_id'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='create_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='Manager', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

webproject/management/migrations/0012_alter_employeeuser_create_by.py

+# Generated by Django 3.2 on 2021-04-25 03:54
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0011_alter_employeeuser_create_by'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='create_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

webproject/management/migrations/0013_alter_employeeuser_create_by.py

+# Generated by Django 3.2 on 2021-04-25 03:58
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0012_alter_employeeuser_create_by'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='create_by',
+            field=models.ForeignKey(default=None, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='+', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

webproject/management/migrations/0014_alter_employeeuser_create_by.py

+# Generated by Django 3.2 on 2021-04-25 04:11
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0013_alter_employeeuser_create_by'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='create_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to='auth.user'),
+        ),
+    ]

webproject/management/migrations/0015_auto_20210426_1019.py

+# Generated by Django 3.2 on 2021-04-26 03:19
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0014_alter_employeeuser_create_by'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='product',
+            name='manager_username',
+        ),
+        migrations.AddField(
+            model_name='product',
+            name='manager',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

webproject/management/migrations/0016_auto_20210426_1035.py

+# Generated by Django 3.2 on 2021-04-26 03:35
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0015_auto_20210426_1019'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='employeeuser',
+            name='note',
+            field=models.CharField(max_length=50),
+        ),
+        migrations.AlterField(
+            model_name='product',
+            name='manager',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='auth.user'),
+        ),
+        migrations.CreateModel(
+            name='Man',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('note', models.CharField(max_length=150)),
+                ('create_by', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='+', to=settings.AUTH_USER_MODEL)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

webproject/management/migrations/0017_auto_20210503_1326.py

+# Generated by Django 3.2 on 2021-05-03 06:26
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0016_auto_20210426_1035'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='product',
+            name='product_id',
+            field=models.CharField(max_length=50),
+        ),
+        migrations.AlterUniqueTogether(
+            name='product',
+            unique_together={('product_id', 'manager')},
+        ),
+        migrations.DeleteModel(
+            name='Man',
+        ),
+    ]

webproject/management/migrations/0018_posmanager.py

+# Generated by Django 3.2 on 2021-05-20 11:35
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('management', '0017_auto_20210503_1326'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='POSManager',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('shop', models.CharField(max_length=150)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

webproject/management/models.py

+from django.db import models
+from django.utils.translation import gettext_lazy as _
+from django.urls import reverse
+from django.contrib.auth.models import User,Group
+from django.dispatch import receiver
+from django.db.models.signals import post_save, pre_save,pre_delete
+
+
+
+
+class FileForSave(models.Model):
+    docfile = models.FileField(upload_to='')
+
+
+
+
+class EmployeeUser(models.Model):
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    note = models.CharField(max_length=50)
+    create_by = models.ForeignKey(User, on_delete=models.CASCADE,related_name='+')
+    def delete(self, *args, **kwargs):
+        self.user.delete()
+        return super(self.__class__, self).delete(*args, **kwargs)
+    def __str__(self):
+        return str(self.user)+' create_by '+str(self.create_by)
+
+class POSManager(models.Model):
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    shop = models.CharField(max_length=150)
+    def delete(self, *args, **kwargs):
+        self.user.delete()
+        return super(self.__class__, self).delete(*args, **kwargs)
+    def __str__(self):
+        return str(self.user)+' manage '+str(self.shop)
+
+
+class Product(models.Model):
+    product_id = models.CharField(max_length=50)
+    name = models.CharField(max_length=50)
+    description = models.CharField(max_length=50)
+    category = models.CharField(max_length=50)
+    price = models.DecimalField(max_digits=7,decimal_places=2)
+    quantity = models.IntegerField()
+    manager = models.ForeignKey(User, on_delete=models.CASCADE)
+    class Meta:
+        unique_together = (("product_id","manager"),)
+    def __str__(self):
+        return str(self.manager)+' create ' +str(self.product_id)+' '+self.name+' '+str(self.price)  
+    def get_absolute_url(self):
+        return reverse("show_product")
+
+
+@receiver(pre_save, sender=User)
+def update_username_from_email(sender, instance, **kwargs): 
+    if instance.username.lower()==instance.first_name.lower() and instance.email!=None and instance.email!='' :
+        user_email = instance.email
+        username = user_email[:30]
+        n = 1
+        while User.objects.exclude(pk=instance.pk).filter(username=username).exists():
+            n += 1
+            username = user_email[:(29 - len(str(n)))] + '-' + str(n)
+        instance.username = username
+
+@receiver(post_save,sender=User)
+def addGroupsManager(sender, instance, **kwargs):
+    if instance.groups.exists() == False:
+        group_manager = Group.objects.get(name='manager') 
+        instance.groups.add(group_manager)
+
+
+@receiver(post_save,sender=EmployeeUser)
+def setGroupEmployeeDeleteGroupManager(sender,instance, **kwargs):
+    group_employee = Group.objects.get(name='employee')
+    instance.user.groups.add(group_employee)
+    group_manager = Group.objects.get(name='manager')
+    instance.user.groups.remove(group_manager)
+    # edit เมื่อทำหน้าสมัครเอง
+    if POSManager.objects.filter(user=instance.create_by).count()==0:
+        POSManager(user=instance.create_by).save()
\ No newline at end of file

webproject/management/permission_page.py

+from django.shortcuts import redirect,render
+def pos_manager_only(view_func):
+    def wrapper_function(request, *args, **kwargs):
+        group = None
+        if request.user.groups.exists():
+            group = request.user.groups.all()[0].name
+        if group == 'manager':
+            print('managerrrrrrrrrrrrrrrrrrrrrrrr')
+            return view_func(request,*args, **kwargs)
+        else :
+            return redirect('GaMaiMeeSit')
+    return  wrapper_function
+
+# def allow_by_role(roles=[]):
+#     def decorator(view_f):
+#         def wrapper(request, *args, **kwargs):
+#             group = None
+#             if request.user.groups.exists():
+#                 group = request.user.groups.all()[0].name
+#             if group in roles:
+#                 print('group in role')
+#                 return view_f(request,*args, **kwargs)
+#             else :
+#                 return redirect('GaMaiMeeSit')
+#         return wrapper
+#     return decorator
+
+
+def gamaimeesit(request):
+    return render(request,'gamaimeesit.html')
\ No newline at end of file

webproject/management/templates/add_product.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+    {% include 'navbar.html' %}
+    <!-- check message -->
+    {% if message != '' %}
+    <div class="modal fade" id="show_message" tabindex="-1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+            <div class="modal-content">
+            <div class="modal-body">
+            {{message}}
+            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+            <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            </div>
+        </div>
+    </div>
+    {% endif %}
+
+    <!-- Modal product -->
+    <div class="modal fade" id="product_Modal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+            <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="exampleModalLabel">กรุณายืนยัน</h5>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            {% comment %} <div class="modal-body">
+                ...
+            </div> {% endcomment %}
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-dismiss="modal">ปิด</button>
+                <button type="button" class="btn btn-primary" onclick='document.getElementById("product_form").submit();'>เพิ่มสินค้า</button>
+            </div>
+            </div>
+        </div>
+    </div>
+
+    <!-- Modal upload file -->
+    <div class="modal fade" id="upload_file_Modal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+            <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="exampleModalLabel">กรุณายืนยัน</h5>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            {% comment %} <div class="modal-body">
+                <p>
+                    นอนยันการอัพโหลด
+                </p>
+            </div> {% endcomment %}
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-dismiss="modal">ปิด</button>
+                <button type="button" class="btn btn-primary" onclick='document.getElementById("upload_form").submit();'>อัพโหลด</button>
+            </div>
+            </div>
+        </div>
+    </div>
+
+    <div class="container">
+        <div class="row">
+            <div class="col-lg-6 p-0">
+                <ul class="list-group">
+                    <li class="list-group-item list-group-item-light ">
+                        <h2>เพิ่มสินค้า 1 รายการ</h2> 
+                    </li>
+                    
+                    <li class="list-group-item">
+                        <form id='product_form' name='product_form' action="{% url "add_product" %}" method="post" enctype="multipart/form-data">
+                            {% csrf_token %}
+                            {{ product_form.as_p }}
+                        </form> 
+                        <button  class="btn btn-outline-success"  data-toggle="modal" data-target="#product_Modal" >เพิ่มสินค้า</button>
+                    </li>
+                </ul>
+
+            </div>
+            <div class="col-lg-6">
+                
+                <ul class="list-group">
+
+                    <li class="list-group-item list-group-item-info">
+                        <h2>เพิ่มสินค้าโดยใช้ไฟล์ xlsx</h2> 
+                    </li>
+                    <li class="list-group-item">
+                        <a class="nav-link" href="{% url 'download' 'exampleAddProduct.xlsx'%}" id='download'>ตัวอย่างไฟล์</a>
+                        <form id='upload_form' name='upload_form' action="{% url "add_product" %}" method="post" enctype="multipart/form-data">
+                            {% csrf_token %}
+                            
+                            
+                            <p>{{ upload_form.non_field_errors }}</p>
+
+                            <p>{{ upload_form.docfile.label_tag }} {{ upload_form.docfile.help_text }}</p>
+
+                            <p>
+                                {{ upload_form.docfile.errors }}
+                                <input class='btn p-0' type="file" name="docfile" required="" id="id_docfile">
+                            </p>
+                        </form>
+                        <button name='summit_upload_form'   class="btn btn-outline-success" data-toggle="modal" data-target="#upload_file_Modal">อัพโหลด</button>
+                    </li>
+                </ul>
+                          
+            </div>        
+        </div>
+
+    </div>
+    <script src="https://code.jquery.com/jquery-3.6.0.js" integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
+    <script type="text/javascript">
+        $(window).on('load', function() {
+            $('#show_message').modal('show');
+        });
+    </script>
+{% endblock content %}

webproject/management/templates/delete_bill.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+
+<div class="container py-5">
+<form align='center' action='.' method='POST'>{% csrf_token %}
+
+<h5 class='text-primary'>ยืนยันการลบ</h5>     
+<p>
+<b>รายการขาย สร้างเมื่อ</b> {{ object.created }} <b>บุคคลที่สร้าง</b> {{object.user}}
+</p>
+        <button type="submit" class="btn btn-outline-danger mx-5"  >ยืนยัน</button>  
+        <a href='{% url "bills" %}'><button type="button" class="btn btn-outline-info mx-5" >ปิด</button></a>
+
+
+</form>
+</div>
+
+{% endblock %}  
\ No newline at end of file

webproject/management/templates/delete_employee.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+
+<div class="container py-5">
+<form align='center' action='.' method='POST'>{% csrf_token %}
+
+<h5 class='text-primary'>ยืนยันการลบ</h5>     
+<p>
+<b>username</b> {{ object.user }} <b>note</b> {{object.note}}
+</p>
+        <button type="submit" class="btn btn-outline-danger mx-5"  >ยืนยัน</button>  
+        <a href='{% url "show_product" %}'><button type="button" class="btn btn-outline-info mx-5" >ปิด</button></a>
+
+
+</form>
+</div>
+
+{% endblock %}  
\ No newline at end of file

webproject/management/templates/delete_product.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+
+<div class="container py-5">
+<form align='center' action='.' method='POST'>{% csrf_token %}
+
+<h5 class='text-primary'>ยืนยันการลบ</h5>     
+<p>
+สินค้ารหัส {{object.product_id}} ชื่อสินค้า {{object.name}}
+</p>
+        <button type="submit" class="btn btn-outline-danger mx-5"  >ยืนยัน</button>  
+        <a href='{% url "show_product" %}'><button type="button" class="btn btn-outline-info mx-5" >ปิด</button></a>
+
+
+</form>
+</div>
+
+{% endblock %}  
\ No newline at end of file

webproject/management/templates/edit_product.html

+{% extends 'pos_base.html' %}
+{% block content %}
+{% include 'navbar.html' %}
+    <div class="modal fade" id="product_Modal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+            <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="exampleModalLabel">กรุณายืนยัน</h5>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-dismiss="modal">ปิด</button>
+                <button type="button" class="btn btn-primary" onclick='document.getElementById("product_form").submit();'>บันทึก</button>
+            </div>
+            </div>
+        </div>
+    </div>
+
+<div class="container">
+    <form id='product_form'action='.' method='POST'>{% csrf_token %}
+        {{ form.as_p }}
+    </form>
+    <button  class="btn btn-outline-success"  data-toggle="modal" data-target="#product_Modal" >บันทึก</button>
+</div>
+    
+{% endblock  %}
\ No newline at end of file

webproject/management/templates/gamaimeesit.html

+{% extends 'pos_base.html' %}
+{% block content %}
+<h1>ไม่มีสิทธิ์เข้าถึงหน้านี้</h1>
+<script>
+window.onload = fiveSecondGoHomePage()
+function fiveSecondGoHomePage(){
+setTimeout(function(){ 
+    window.location.href = '{% url "home" %}'
+    }, 5000);
+
+}
+
+</script>
+{% endblock content %}
\ No newline at end of file

webproject/management/templates/manage_employee.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+{% include  'navbar.html'%}
+
+{% comment %} {{emps}} {% endcomment %}
+<div class="container">
+    <form action="{% url "manage_employee" %}" method="post" class='text-center' >
+        {% csrf_token %}
+        {% comment %} &nbsp;&nbsp;&nbsp; {% endcomment %}
+        {{ sign_up_form }}
+        <button type='submit' >เพิ่ม</button>
+    </form>
+    <table class="table table-striped table-bordered">
+        <thead>
+            <tr>
+            <th scope="col">username</th>
+            <th scope="col">Note</th>
+            <th scope='col' class='text-center'>ลบผู้ใช้</th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for emp in emps %}
+                <tr>
+                    <td >{{emp.username}} </td>
+                    <td >{{emp.note}} </td>
+                    <td scope='rowgroup' class='text-center'>
+                    <a href='{% url "deleteemployee" emp.id %}'>
+                        <button type="button" class="btn btn-small btn-outline-secondary" >
+                            <i class="bi-trash"></i>
+                        </button>
+                    </a>
+                    </td>
+                </tr>
+            {% endfor %}
+        </tbody>
+    </table>
+</div>
+
+
+{% endblock content %}
+

webproject/management/templates/show_bills.html

+{% extends 'pos_base.html' %}
+
+{% block content %}
+    {% include 'navbar.html' %} 
+    <div class="container">
+        <table class="table">
+            <thead>
+                <tr>
+                    <th>เวลาที่สร้าง</th>
+                    <th>สร้างโดย</th>
+                    <th></th>
+                </tr>
+            </thead>
+            <tbody>
+                {% for i in bills%}
+                    <tr>
+                        <td scope="row">{{i.created}}</td>
+                        <td>{{i.user}}</td>
+                        <td><a href='{% url "deletebill" i.id %}'> <button type="button" class="btn btn-small btn-outline-secondary" ><i class="bi-trash"></i></button> </a></td>
+                    </tr>
+                {% endfor %}
+                
+                <tr>
+                    <td scope="row"></td>
+                    <td></td>
+                    <td></td>
+                </tr>
+            </tbody>
+        </table>
+    </div>
+{% endblock content %}
\ No newline at end of file

webproject/management/templates/show_product.html

+{% extends 'pos_base.html' %}
+{% block content %}
+    {% include 'navbar.html' %} 
+    
+    <div class="container d-lg-none">
+       <h1>
+        ขนาดของจอเล็กเกินไป
+        </h1>
+    </div>
+
+
+    <div class='container d-none d-lg-block mt-5'>
+    <a name="" id="" class="btn btn-lg btn-primary align-content-center" href="{% url 'add_product' %}" role="button">เพิ่มสินค้า</a>
+        {% comment %} <button class='btn btn-outline-info'>  </button> {% endcomment %}
+        {% comment %} unable to sort data in table have to fix it? {% endcomment %}
+        <ul class="list-group list-group-flush">
+            <li class="list-group-item m-0 p-1 list-group-item-primary">     
+                <div class="row">          
+                    <div class='col-lg-2  '>product id</div>
+                    <div class='col-lg-2  '>name</div>
+                    <div class='col-xl-2 d-lg-none d-xl-block '>description</div>
+                    <div class='col-lg-2 col-xl-1 text-center'>price</div>
+                    <div class='col-lg-2 col-xl-1 text-center'>quantity</div>
+                    <div class='col-lg-2  text-center'>category</div>
+                    <div class='col-lg-2  '>management</div>
+                </div>
+            </li>
+            {% for product in products %}
+        
+            <li class="list-group-item m-0 p-1">     
+                <div class="row">
+                        
+                    <div class='col-lg-2 '>{{product.product_id}}</div>
+                    <div class='col-lg-2  text-truncate'>{{product.name}}</div>
+                    <div class='col-lg-2 d-lg-none d-xl-block'><p  class='m-0'>{{product.description}}
+                        {% comment %} ครับ สำหรับท่านที่เดินผ่านไปผ่านมานะครับ วันนี้ เฉาก๊วยชากังราวของเรานะครับ 
+                        ก็ได้มาบริการท่านพ่อแม่พี่น้องกันอีกแล้วครับ อากาศร้อนๆ อย่างนี้นะครับ 
+                        สำหรับท่านที่เดินผ่านไปผ่านมา ลองมาแวะชิมเฉาก๊วยแท้ๆ กันก่อนนะครับ 
+                        เฉาก๊วยชากังราวของเราเป็นที่รู้จักไปทั่ว {% endcomment %}
+                    </p></div>
+                    <div class='col-lg-2 col-xl-1  text-center'>{{product.price}}</div>
+                    <div class='col-lg-2 col-xl-1  text-center'>{{product.quantity}}</div>
+                    <div class='col-lg-2  text-center'>{{product.category}}</div>
+                    <div class='col-lg-2 '>
+                        {% comment %} <a href='{% url "edit_product" %}'> {% endcomment %}
+                        <button type="button" class="btn btn-small btn-outline-secondary" onclick='to_edit_page({{product.id}})'><i class="bi-list"></i></button>
+                        {% comment %} </a> {% endcomment %}
+                        <button type="button" class="btn btn-small" disabled></button>
+                        {% comment %} <button type="button" class="btn btn-small btn-outline-secondary" data-toggle="modal" data-target="#confirm_delete" onclick='savePIDforDELETE({{product.id}})'><i class="bi-trash"></i></button> {% endcomment %}
+                        <a href='{% url "deleteproduct" product.id %}'> <button type="button" class="btn btn-small btn-outline-secondary" ><i class="bi-trash"></i></button> </a>
+                    </div>
+                
+                </div>
+            </li>
+            {% endfor %}
+        </ul>
+    </div>
+    <script>
+        console.log('hi');
+        function to_edit_page(pid){
+                window.location.href = '{% url "home" %}'+'management/editproduct/'+pid; 
+        }
+        
+    </script>
+{% endblock %}
\ No newline at end of file

webproject/management/tests.py

+from django.test import TestCase
+
+# Create your tests here.

webproject/management/views.py

+from django import urls
+from django.shortcuts import redirect, render,get_object_or_404
+import os
+from django.urls import reverse
+from .models import FileForSave, POSManager,Product,EmployeeUser
+from .forms import FileForm,EmployeeForm,ProductForm,SendProductID
+import pandas as pd
+from django.contrib.auth.models import User
+from django.db.models.signals import post_save
+from django.views.generic.edit import UpdateView,DeleteView
+from django.http import HttpResponseRedirect
+from django.contrib.auth.decorators import login_required
+from .permission_page import pos_manager_only
+from pos.models import Bill,BillList
+
+@login_required
+@pos_manager_only
+def show_bills(req):
+    context = dict()
+    manager = POSManager.objects.get(user=req.user)
+    context['bills'] = Bill.objects.filter(manager=manager).order_by('-created')
+    return render(req,'show_bills.html',context)
+
+@login_required
+@pos_manager_only
+def show_products(request):
+    context = {}
+    context['products'] = Product.objects.filter(manager=request.user).order_by('quantity')
+    context['keepPID'] = SendProductID()
+    return render(request,'show_product.html',context)
+
+
+class BillDeleteView(DeleteView):
+    template_name = 'delete_bill.html'
+    def get_object(self):
+        id_ = self.kwargs.get("id")
+        return get_object_or_404(Bill, id=id_)
+    def delete(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        success_url = self.get_success_url()
+        print(success_url)
+        self.object.delete()
+        success_url = self.get_success_url()
+        return HttpResponseRedirect(success_url)
+    def get_success_url(self):
+        return reverse('bills',kwargs=None)
+
+@login_required
+@pos_manager_only
+def add_product(request):
+    message = ''
+    file_form = FileForm()
+    product_form = ProductForm()  
+    if request.method == 'POST':
+        file_form = FileForm(request.POST, request.FILES)
+        product_form = ProductForm(request.POST)
+        if file_form.is_valid():
+            newdoc = FileForSave(docfile=request.FILES['docfile'])
+            newdoc.save()
+            try:
+                df = pd.read_excel (newdoc.docfile)
+                for i in df.values:
+                    i = i.tolist()
+                    for j in i:
+                        print(type(j),end=' ')
+                    print()
+                    try:
+                        product = Product.objects.get(manager=request.user,product_id=i[0])
+                        product.quantity+=i[4]
+                        product.save()
+                    except:
+                        try:
+                            instance_product = Product(
+                            product_id=str(i[0],),
+                            name=i[1],
+                            description=i[2],
+                            price=i[3],
+                            quantity=i[4],
+                            category=i[5],
+                            manager=request.user)
+                            instance_product.save()
+                            print(post_save(sender=Product,instance=instance_product))
+                            
+
+                        except:
+                            print('*--try level 3 error--* new_instance_product error')
+                        print('*--try level 2 error--* no this product')
+            except:
+                print('*--try level 1 error--*')
+                message = 'เกิดข้อผิดพลาด'
+            allFile = FileForSave.objects.all()
+            for i in allFile:
+                f_path = i.docfile.path
+                try:
+                    os.remove(f_path)
+                    print(f_path+' deleted')
+                    i.delete()
+                except:
+                    print("can't delete "+f_path)  
+            return redirect('show_product')
+        elif product_form.is_valid():
+            rp = request.POST
+            instance_product = Product(
+                            product_id=rp.get('product_id'),
+                            name=rp.get('name'),
+                            description=rp.get('description'),
+                            price=rp.get('price'),
+                            quantity=rp.get('quantity'),
+                            category=rp.get('category'),
+                            manager=request.user)
+
+            instance_product.save()
+
+            return redirect('show_product')  
+        else:
+            message = 'กรุณากรอกข้อมูลกรอกข้อมูล'
+
+    context = {'upload_form': file_form, 'message': message}
+    context['product_form']=product_form
+ 
+    return render(request, 'add_product.html', context)
+
+
+@login_required
+@pos_manager_only
+def manage_employee(request):
+    sign_up_form = EmployeeForm()
+    if request.method == 'POST':
+        form = EmployeeForm(request.POST, request.FILES)
+        if form.is_valid():
+            user = User.objects.create(username=request.POST['username'])  
+            user.set_password(raw_password=request.POST['password'])
+            user.save()
+            employee = EmployeeUser(user=user,create_by=request.user,note=request.POST['note'])
+            employee.save()
+            return redirect('manage_employee')
+            
+    employees = EmployeeUser.objects.filter(create_by=request.user).values()
+    employees2 = []
+    for i in employees:
+        employees2.append({
+            'username':User.objects.get(id=i['user_id']).username,
+            'note':i['note'],
+            'id':i['id']
+            })
+    return render(request,'manage_employee.html',{'sign_up_form':sign_up_form,'emps':employees2,'emp1':employees})
+
+
+@login_required
+@pos_manager_only
+def edit_product(request):
+    print('in function edit product ')
+    if request.method == 'POST':
+        print(request.POST)
+        context = {}
+        return render(request, 'edit_product.html' ,context)
+    else : 
+        return redirect('show_product')
+
+
+
+class ProductUpdateView(UpdateView):
+    model = Product
+    form_class = ProductForm
+    template_name = 'edit_product.html'
+    def get_object(self):
+        id_ = self.kwargs.get("id")
+        return get_object_or_404(Product, id=id_)
+
+    def form_valid(self, form):
+        return super().form_valid(form)
+
+class ProductDeleteView(DeleteView):
+    template_name = "delete_product.html"
+    def get_object(self):
+        id_ = self.kwargs.get("id")
+        print(get_object_or_404(Product, id=id_))
+        return get_object_or_404(Product, id=id_)
+    def delete(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        manager = User.objects.get(id = self.object.manager_id)
+        success_url = self.get_success_url()
+        if request.user == manager:
+            success_url = self.get_success_url()
+            print('delete ok')
+            self.object.delete()
+        else:
+            print("you don't have permission")
+        return HttpResponseRedirect(success_url)
+    def get_success_url(self):
+        return reverse('show_product',kwargs=None)
+
+class EmployeeDeleteView(DeleteView):
+    template_name = "delete_employee.html"
+    def get_object(self):
+        id_ = self.kwargs.get("id")
+        return get_object_or_404(EmployeeUser, id=id_ )
+    def delete(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        self.object.delete()
+
+        success_url = self.get_success_url()
+
+        return HttpResponseRedirect(success_url)
+    def get_success_url(self):
+        return reverse('manage_employee',kwargs=None)

webproject/pos/admin.py

+from django.contrib import admin
+from .models import *
+# Register your models here.
+admin.site.register(BillList)
+
+admin.site.register(Bill)
+
+admin.site.register(FeaturePic)
\ No newline at end of file

webproject/pos/apps.py

+from django.apps import AppConfig
+
+
+class PosConfig(AppConfig):
+    name = 'pos'