BACK-END Template Code

requirements.txt

asgiref==3.11.0
Django==6.0.1
djangorestframework==3.16.1
psycopg==3.3.2
psycopg-binary==3.3.2
sqlparse==0.5.5

Docker

PostgreSQL Image

FROM postgres:15

ENV POSTGRES_USER=cp_user
ENV POSTGRES_PASSWORD=password
ENV POSTGRES_DB=task_db

EXPOSE 5432

CMD ["postgres"]

Django Image

FROM python:latest

WORKDIR /app

COPY . .

RUN pip install -r requirements.txt

EXPOSE 8000

CMD ["python3", "manage.py", "runserver", "0.0.0.0:8000"]

task_api (project dir)

task_api.settings

"""
Django settings for task_api project.

Generated by 'django-admin startproject' using Django 6.0.1.

For more information on this file, see
https://docs.djangoproject.com/en/6.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/6.0/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/6.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-!jxkbdorz5qq54f8fr=xc8$u+%n*!614q!ym7!#$g)bm)@zm^x'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['0.0.0.0', 'localhost']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'rest_framework.authtoken',
    'task_app',
    'user_app',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'task_api.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'task_api.wsgi.application'


# Database
# https://docs.djangoproject.com/en/6.0/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'task_db',
        'USER': 'cp_user',
        'HOST': 'postgres-container',
        'PORT': '5432'
    }
}


# Password validation
# https://docs.djangoproject.com/en/6.0/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/6.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/6.0/howto/static-files/

STATIC_URL = 'static/'

AUTH_USER_MODEL = "user_app.AppUser"

task_api.urls

from django.contrib import admin
from django.urls import path, include
from django.http import JsonResponse

def connection(request):
    return JsonResponse({"connected":True})

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/v1/test/', connection),
    path('api/v1/tasks/', include('task_app.urls')),
    path('api/v1/users/', include('user_app.urls')),
]

user_app

user_app.models

from django.db import models
from django.contrib.auth.models import AbstractUser


# Create your models here.
class AppUser(AbstractUser):
    email = models.EmailField(unique=True)
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

user_app.urls

from django.urls import path
from .views import *

urlpatterns = [
    path("", Info.as_view()),
    path("create/", CreateUser.as_view()),
    path("login/", LogIn.as_view()),
    path("logout/", LogOut.as_view())
]

user_app.views

from django.contrib.auth import login, authenticate, logout
from .models import AppUser
from rest_framework.authtoken.models import Token
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.authentication import TokenAuthentication
from rest_framework.permissions import IsAuthenticated
from rest_framework import status as s

# Create your views here.
class CreateUser(APIView):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]

    def post(self, request):
        data = request.data
        data['username'] = request.data.get('email')
        new_user = AppUser.objects.create_user(**data)
        try:
            new_user.full_clean()
            new_user.save()
            token = Token.objects.create(user=new_user)
            return Response({"token":token.key, "email":new_user.email}, status=s.HTTP_201_CREATED)
        except Exception as e:
            return Response(e.args, status=s.HTTP_400_BAD_REQUEST)

class LogIn(APIView):
    authentication_classes = []
    permission_classes = []

    def post(self, request):
        data = request.data
        data['username'] = request.data.get('email')
        user = authenticate(username=data.get('username'), password=data.get("password"))
        if user:
            Token.objects.get_or_create(user=user)
            return Response({"token":user.auth_token.key, "email":user.email})
        else:
            return Response("No user matching credentials", status=s.HTTP_404_NOT_FOUND)

class UserView(APIView):
    authentication_classes = [TokenAuthentication]
    permission_classes = [IsAuthenticated]


class Info(UserView):
    def get(self, request):
        user = request.user
        return Response({"token":user.auth_token.key, "email":user.email})

class LogOut(UserView):
    def post(self, request):
        user = request.user
        user.auth_token.delete()
        return Response(f"{user.email} has been logged out")

task_app

task_app.models

from django.db import models
from user_app.models import AppUser

# Create your models here.
class Task(models.Model):
    title = models.CharField()
    user = models.ForeignKey(AppUser, on_delete=models.CASCADE, related_name='tasks')

    def __str__(self):
        return f"{self.title}"

task_app.serializers

from rest_framework.serializers import ModelSerializer
from .models import Task

class TaskSerializer(ModelSerializer):

    class Meta:
        model = Task
        fields = '__all__'

task_app.urls

from django.urls import path
from .views import *

urlpatterns = [
    path("", AllTasks.as_view()),
    path("<int:task_id>/", ATask.as_view())
]

task_app.views

from user_app.views import UserView
from rest_framework.response import Response
from .serializers import TaskSerializer
from rest_framework import status as s

# Create your views here.
class AllTasks(UserView):
    def get(self, request):
        return Response(TaskSerializer(request.user.tasks.all(), many=True).data)

    def post(self, request):
        data = request.data.copy()
        data['user'] = request.user.id
        ser_task = TaskSerializer(data=data)
        if ser_task.is_valid():
            ser_task.save()
            return Response(ser_task.data, status=s.HTTP_201_CREATED)
        else:
            return Response(ser_task.errors, status=s.HTTP_400_BAD_REQUEST)

class ATask(UserView):
    def get(self, request, task_id):
        return Response(TaskSerializer(request.user.tasks.get(id=task_id)).data)

    def put(self, request, task_id):
        data = request.data.copy()
        ser_task = TaskSerializer(request.user.tasks.get(id=task_id), data=data, partial=True)
        if ser_task.is_valid():
            ser_task.save()
            return Response(ser_task.data)
        else:
            return Response(ser_task.errors, status=s.HTTP_400_BAD_REQUEST)

    def delete(self, request, task_id):
        task = request.user.tasks.get(id=task_id)
        return_string = f"{task.title} has been deleted"
        task.delete()
        return Response(return_string)