Quick Start with Django Projects: Master the project creation commands and quickly build your own applications

Quick Start with Django Project: Master the project creation commands and quickly build your own application. Specific code examples are required

Django is an open source, efficient Python Web framework. It can help developers quickly build stable and reliable web applications. In this article, we will learn how to use Django to create projects and build our own applications.

1. Install Django
Before we begin, we need to install Django first. You can use the following command to install Django in the terminal:

pip install django

2. Create a Django project
After installing Django, we can use the following command to create a new project:

django-admin startproject myproject

This will create a Django project folder named "myproject". Enter the folder:

cd myproject

3. Create a Django application
Next, we will create an application in the project. A Django project can contain multiple applications, each application is responsible for completing different functions.

Create an app using the following command:

python manage.py startapp myapp

This will create an app folder named "myapp".

4. Configure the application
After creating the application, you need to add it to the project configuration. Open the settings.py file and find the INSTALLED_APPS list. Add the application we just created to the list:

INSTALLED_APPS = [
    ...
    'myapp',
    ...
]

5. Write the view function
In Django, the view function is responsible for processing user requests and returning corresponding content.

Go to the myapp folder, create a file named views.py, and add the following code:

from django.http import HttpResponse

def hello(request):
    return HttpResponse("Hello, Django!")

6. Configure URL Mapping
To let Django know how to map user requests to our view functions, we need to configure URL mapping.

Under the myapp folder, create a file named urls.py and add the following code:

from django.urls import path
from . import views

urlpatterns = [
    path('hello/', views.hello, name='hello'),
]

This configuration means When a user accesses the /hello/ path, the views.hello function will be called to process the request.

7. Configure project URL mapping
In the project folder, there is a file named urls.py. This file is used to configure the URL mapping of the entire project.

Edit the urls.py file and add the following code to the urlpatterns list:

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

urlpatterns = [
    path('admin/', admin.site.urls),
    path('myapp/', include('myapp.urls')),
]

In this configuration, we add the URL of the project Requests starting with /myapp/ are handled by the URL configuration of the myapp application.

8. Run the project
Now that we have completed the basic configuration of the project, we can try to run the project. Execute the following command on the command line:

python manage.py runserver

This command will start Django’s development server. Visit http://127.0.0.1:8000/myapp/hello/ in the browser, and you will see the "Hello, Django!" message.

Through the above steps, we successfully created a Django project and built a simple application. You can add more features and view functions to your application according to your needs.

Summary
In this article, we learned how to use Django to create a project and build a simple application. By mastering the project creation commands and the process of building applications, we can quickly start developing our own web applications. I hope this article will help you get started with Django!

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