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rakesh kumar
rakesh kumar

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how to Define API endpoints for each CRUD operation in python with django

Sure! Here's an example of how to define API endpoints for each CRUD operation in Python using Django:

1.Install Django

Use pip to install Django by running the command pip install
django
2.Create a new Django project

  1. Run the command django-admin startproject myproject to create a new Django project named "myproject"
    1. Navigate to the project directory using cd myproject.

3.Create a new Django app

  1. Run the command python manage.py startapp myapp to create a new Django app named "myapp".

4.Define the Django app and routes

  1. Open the myapp/views.py file and define views for each CRUD operation using Django's built-in generic views
  2. Open the myapp/urls.py file and define URL routes for each CRUD operation using Django's urlpatterns list

Example of a Django app with API endpoints for CRUD operations on a Books database table

from django.urls import path
from django.views.generic import ListView, DetailView
from myapp.models import Book

urlpatterns = [
    path('books/', ListView.as_view(queryset=Book.objects.all())),
    path('books/<int:pk>/', DetailView.as_view(model=Book)),
]
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In this example, we define two API endpoints for CRUD operations on a Books database table:

GET /books - Retrieves all books from the database
GET /books/<book_id> - Retrieves a specific book by ID from the database
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Each endpoint maps to a Django view, which is defined as a class that inherits from one of Django's built-in generic views (ListView and DetailView in this case). The queryset and model attributes of each view are used to specify the database table to query and the model to use.

You can extend this example to include the remaining CRUD operations (create, update, and delete) by defining additional views and URL routes. For example, here's how you could add a view and URL route for creating a new book:

Example of a Django app with API endpoints for CRUD operations on a Books database table (continued)

from django.views.generic.edit import CreateView
from myapp.forms import BookForm

urlpatterns = [
    path('books/', ListView.as_view(queryset=Book.objects.all())),
    path('books/<int:pk>/', DetailView.as_view(model=Book)),
    path('books/create/', CreateView.as_view(model=Book, form_class=BookForm)),
]
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In this updated example, we've added a CreateView for creating a new book, and mapped it to the URL route '/books/create/'. We've also specified a form_class attribute to use a custom form for input validation.

You can similarly define views and URL routes for updating and deleting books using the UpdateView and DeleteView generic views. Note that you'll need to define forms for input validation and handle form submissions in your views.

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