Django version comparison: in-depth analysis of the advantages and disadvantages of different versions to help you make informed decisions

Django is an open source web framework based on the Python language. It allows developers to quickly build web applications through Django's model-view-controller (MVC) design pattern. Django's version updates very quickly. There have been multiple versions so far. This article will provide an in-depth analysis of the advantages and disadvantages of different versions to help you make informed decisions and provide specific code examples.

1. Django1.8 version

Django1.8 is the earliest and relatively complete version. It provides many important functions also used by later versions, such as system detection and migration. frame. In addition, Django 1.8 not only has rich documentation and good language support, but also supports two language versions: Python2 and Python3.

In addition to the above advantages, Django 1.8 also has shortcomings. First, its security issues will limit some development needs. Secondly, Django 1.8 is relatively slow and cannot take full advantage of modern hardware.

2. Django1.11 version

Django1.11 is an intermediate version released in 2017. It has made many improvements based on Django1.8. A major improvement in Django 1.11 is the improvement of the model, including backward compatibility support and the addition of field extensions. In addition, Django 1.11 also uses new language features, supports Python 3 version, and important functions are easier to use.

Compared with Django1.8, Django1.11 also contains some other new features. It adds support for encrypted cookies to protect user privacy to the greatest extent. In addition, Django 1.11 also adds performance improvements to the admin UI, making the admin panel faster and more efficient.

Of course, Django1.11 also has some shortcomings. As with Django 1.8, security issues still exist. In addition, due to backward compatibility processing, some high-end features of Django 1.11 cannot be used normally.

3. Django2.0 version

Django2.0 is the latest version, which has made many improvements based on Django1.11. Django 2.0 solves a large number of existing security issues. At the same time, support for more obviously different Python 2 and Python 3 codes can make it easier for developers to use. In addition, Django 2.0 has improved performance and efficiency in many aspects.

In Django2.0, one of the most popular new features is asynchronous views. Asynchronous views are a new view type that can handle multiple requests simultaneously. It eliminates the time of waiting for IO operations from the Django framework, thereby improving the processing speed of concurrent connections.

In addition to the asynchronous view feature, Django 2.0 has also made many improvements in the management panel and route publishing, improving developer efficiency.

However, Django2.0 also has some problems, the most obvious one is Python2 support. Since Python2 has stopped maintenance, many developers have started to use Python3. This will not affect Python3 users or new Django2.0 users, but there will be some restrictions for Python2 users.

Code Example:

Next let’s look at an example that demonstrates how to create basic views and routes in different versions of Django.

First is the code of Django1.8 version:

'''views.py'''
from django.http import HttpResponse

def hello(request) :

return HttpResponse("Hello Django 1.8!")

'''urls.py'''
from django.conf.urls import url

from .views import hello

urlpatterns = [

url(r'^$', hello, name='hello'),

]

The above code is responsible for processing a basic HTTP GET request and displaying a simple string message. So how do you re-execute this code in different versions of Django?

In Django1.11, you need to update the views as follows:

'''views.py'''

from django.http import HttpResponse

def hello(request):

return HttpResponse("Hello Django 1.11!")

'''urls.py'''
from django.urls import path

from .views import hello

urlpatterns = [

path('', hello, name='hello'),

]

In Django2.0 you need to change the view from a simple function to a method defined on the class:

''' views.py'''
from django.http import HttpResponse
from django.views import View

class HelloView(View):

def get(self, request):
    return HttpResponse("Hello Django 2.0")

'''urls.py' ''
from django.urls import path

from .views import HelloView

urlpatterns = [

path('', HelloView.as_view(), name='hello'),

]

can be seen, although There are many differences between different versions of Django, and you'll be well on your way when you become familiar with the changes and understand which versions best suit your development needs.

Conclusion:

This article looked at several versions of Django, from Django1.8 to Django2.0, each version has its own advantages and disadvantages. Django1.8 is the earliest and relatively complete version, with rich documentation and good language support. Django 1.11 adds support for cookies and performance improvements to the admin panel to better meet developer needs. Django 2.0 has resolved many security issues that existed in earlier versions and provided asynchronous views and other performance improvements that can improve developer efficiency.

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