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This section details the API of the query set, which is based on the following model, the same as the one in the previous section: from django.db import models class Blog(models.Model): name = models.CharField(max_length=100) tagline = models.TextField() def __str__(self): # __unicode__ on Python 2 return sel ...

Introduction: Flask is based on python and relies on jinjia2 and werkzeug WSGI services as a micro framework Werkzeug is essentially a Socket server, which is used to receive http requests and preprocess them, then trigger the Flask framework, Developers process the request based on the functions provided by the Flask framework and return it to ...

11.5 song Leaderboard The song leaderboard is accessed through the navigation link on the home page and displayed in descending order according to the number of songs played. From the design diagram of the leaderboard page, we can see that the web page has three functions: search at the top of the web page, song classification and filtering, a ...

In the last article, we explained the main concepts of restful api to let you have a preliminary understanding. In this article, we will learn to develop the interface of restful architecture through the Django framework of python. 1, Development environment Development language: Python 3.6IDE :PycharmFramework: Django 2.2.12Test tool: Postman ...

URL configuration tips: Method 1: 1 from django.conf.urls.defaults import * 2 from mysite.views import current_datetime, hours_ahead, hours_behind, now_in_chicago, now_in_london 3 4 urlpatterns = patterns('', 5 ('time/', current_datetime), 6 ('time/plus/(\d{1,2})/', hours_ahead), 7 ('time/minus/(\d{1,2})/', hours_ ...

  Django ORM multi table operation (Advanced)   1, Create model Next, we design the corresponding relationship between each table through the book management system. Through the relationship above, we can define our model class. from django.db import models class Book(models.Model): title = models.CharField(max_length= ...

One view atlas and the use of routing Using the view set ViewSet, you can place a series of logically related actions into a class: list() provides a set of data retrieve() provides a single data create() create data update() to save the data Destroy() delete data The ViewSet view set class no longer implements methods su ...

Introduction Refer to the following article for the problem of Django2 connecting to MySQL and the solution of modifying the source code: The interaction between Django and MySQL However, there are many problems when the above source code modification method is used in the production environment. This article explains in detail how to solve thi ...

Catalog Architecture introduction Installation creation and startup Profile directory introduction Crawling data and parsing Data persistence Save to file Save to redis Action chain, verification code to control sliding   Architecture introduction Scrapy is an open-source and collaborative framework, which was originally designed for page ...

Today, I found an interesting problem. The function of writing js code in html works normally, but there are various problems when js code is put into js file. 1. When using jQuery to dynamically generate tags, it is recommended to put the js file written by yourself after < / body > (otherwise, some functions m ...