Committed

backend/django_backend/.gitignore

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+backend.env

backend/django_backend/django_app/admin.py

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+from django.contrib import admin
+from . import models
+
+
+# Register your models here.
+admin.site.register(models.Note)
+
+

backend/django_backend/django_app/apps.py

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+from django.apps import AppConfig
+
+
+class DjangoAppConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "django_app"

backend/django_backend/django_app/migrations/0001_initial.py

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+# Generated by Django 4.2.1 on 2023-05-16 15:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="Note",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("body", models.TextField(blank=True, null=True)),
+                ("updated", models.DateTimeField(auto_now=True)),
+                ("created", models.DateTimeField(auto_now_add=True)),
+            ],
+        ),
+    ]

backend/django_backend/django_app/models.py

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+from django.db import models
+
+
+class Note(models.Model):
+    body = models.TextField(null=True, blank=True)
+    updated = models.DateTimeField(auto_now=True)  #auto_now means to take the current time
+    created = models.DateTimeField(auto_now_add=True) #auto_now_add means to take that time when actuallt the model instance was created
+
+    def _str_(self):
+        return self.body[0:50]
+
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backend/django_backend/django_app/serializers.py

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+from rest_framework import serializers
+from . import models
+
+
+class NoteSerializer (serializers.ModelSerializer):
+    class Meta:
+        model = models.Note
+        fields = "__all__"
+
+

backend/django_backend/django_app/tests.py

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

backend/django_backend/django_app/urls.py

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+from django.urls import path
+from . import views
+
+
+urlpatterns = [
+    path("notes/", views.GetNotes),
+    path("note/<int:note_id>/", views.GetNote),
+    path("note/create/", views.CreateNote),
+    path("note/update/<int:note_id>/", views.UpdateNote),
+    path("note/delete/<int:note_id>/", views.DeleteNote),
+]

backend/django_backend/django_app/views.py

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+from django.shortcuts import render
+from rest_framework.response import Response
+from rest_framework.decorators import api_view
+from django.http import JsonResponse
+from django.core.exceptions import ObjectDoesNotExist
+from . import models
+from . import serializers
+from django.http import QueryDict
+
+
+@api_view(["GET"])
+def GetNotes(request):
+    notes = models.Note.objects.all()
+    serializer = serializers.NoteSerializer(notes, many=True)
+    return Response(serializer.data)
+
+
+@api_view(["GET"])
+def GetNote(request, note_id):
+    try:
+        note = models.Note.objects.get(id=note_id)
+    except ObjectDoesNotExist:
+        error_message = "Note not found"
+        return JsonResponse({'error': error_message}, status=404)
+    else:
+        serializer = serializers.NoteSerializer(note)
+        return Response(serializer.data)
+
+
+@api_view(["POST"])
+def CreateNote(request):
+    data = request.data
+    print(data)
+    created_note = models.Note.objects.create(body=data["body"])
+    serializer = serializers.NoteSerializer(created_note, many=False)
+    return Response(serializer.data)
+
+@api_view(["PUT"])
+def UpdateNote(request, note_id):
+    try:
+        note = models.Note.objects.get(id=note_id)
+        print("Note, i want to edit", note)
+    except ObjectDoesNotExist:
+        error_message = "Note not found"
+        return JsonResponse({'error': error_message}, status=404)
+    else:
+        new_data = request.data
+        # Here in serializer, first argument is a model instance, and second argument is a dictionary <{body:"updated body value"}> we are getting from frontend
+        serializer = serializers.NoteSerializer(instance=note, data=new_data)
+        print("Serializer :", serializer)
+        if serializer.is_valid():
+            serializer.save()
+
+        return Response(serializer.data)
+
+
+@api_view(["DELETE"])
+def DeleteNote(request, note_id):
+    note = models.Note.objects.get(id=note_id)
+    print(note)
+    note.delete()
+    return Response("Note was deleted")

backend/django_backend/django_backend/asgi.py

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+"""
+ASGI config for django_backend project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "django_backend.settings")
+
+application = get_asgi_application()

backend/django_backend/django_backend/settings.py

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+"""
+Django settings for django_backend project.
+
+Generated by 'django-admin startproject' using Django 4.2.1.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.2/ref/settings/
+"""
+
+from pathlib import Path
+import os
+
+# For creating environment variables for confidential stuffs
+import dotenv
+dotenv.load_dotenv()
+
+# 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/4.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = "django-insecure-4wl5zi-b1na2u*^=a+vzs+%08w0kxi33lb419p1s5875ffa97-"
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = ['*']   # for CORS
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    "django.contrib.admin",
+    "django.contrib.auth",
+    "django.contrib.contenttypes",
+    "django.contrib.sessions",
+    "django.contrib.messages",
+    "django.contrib.staticfiles",
+    "django_app",
+    "rest_framework",
+    'corsheaders',
+]
+
+MIDDLEWARE = [
+    "django.middleware.security.SecurityMiddleware",
+    "django.contrib.sessions.middleware.SessionMiddleware",
+    "corsheaders.middleware.CorsMiddleware",      # For CORS
+    "django.middleware.common.CommonMiddleware",
+    "django.middleware.csrf.CsrfViewMiddleware",
+    "django.contrib.auth.middleware.AuthenticationMiddleware",
+    "django.contrib.messages.middleware.MessageMiddleware",
+    "django.middleware.clickjacking.XFrameOptionsMiddleware",
+]
+
+ROOT_URLCONF = "django_backend.urls"
+
+TEMPLATES = [
+    {
+        "BACKEND": "django.template.backends.django.DjangoTemplates",
+        "DIRS": [],
+        "APP_DIRS": True,
+        "OPTIONS": {
+            "context_processors": [
+                "django.template.context_processors.debug",
+                "django.template.context_processors.request",
+                "django.contrib.auth.context_processors.auth",
+                "django.contrib.messages.context_processors.messages",
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = "django_backend.wsgi.application"
+
+
+# It is necessary to install mysqlclient package to establish the connection between the MySQL and Django.
+# pip install mysqlclient
+# In order to create new db-file in mysql use CLI "CREATE DATABASE db_name;"
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.mysql',
+        'NAME': 'my_db',
+        'USER': 'root',
+        'PASSWORD': os.getenv('MYSQL_PASSWORD'),
+        'HOST': 'localhost',
+        'PORT': '3306',
+        'OPTIONS': {
+            'init_command': "SET sql_mode='STRICT_TRANS_TABLES'"
+        }
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.2/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/4.2/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/4.2/howto/static-files/
+
+STATIC_URL = "static/"
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+
+''' CORS policy '''
+CORS_ORIGIN_ALLOW_ALL = True
+#
+# CORS_ALLOWED_ORIGINS = [
+#     # Add the origin of your React app
+#     'http://localhost:3000',
+# ]
+#
+# CORS_ALLOW_METHODS = [
+#     'DELETE',
+#     'GET',
+#     'OPTIONS',
+#     'PATCH',
+#     'POST',
+#     'PUT',
+# ]
+
+

backend/django_backend/django_backend/urls.py

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+from django.contrib import admin
+from django.urls import path, include
+
+
+urlpatterns = [
+    path("admin/", admin.site.urls),
+    path('api/', include('django_app.urls')),
+]

backend/django_backend/django_backend/wsgi.py

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+"""
+WSGI config for django_backend project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "django_backend.settings")
+
+application = get_wsgi_application()