Programming VIP

Django template development & rewriting & using bootstrap This paper uses Django's own template system base.html Django's template system is inseparable from base Html is a template file, which is equivalent to a large framework. It is spliced through various block blocks, which is similar to vue's template. You can do it at ba ...

Django uses object relational mapper (ORM) ¹ To access the data stored in the database In essence, the data stored in the database table is encapsulated by the Django model. A model is a python object that describes database table data. Django provides some methods that allow you to manipulate data through corresponding Python model objec ...

cycle Each time this tag is encountered, a parameter is generated. The first encounter generates the first parameter, the second encounter generates the second parameter, and so on. Once all parameters are exhausted, the tag loops to the first parameter and generates it again. def variable_dict(request): var_dict = {'var1': ['var0', 'var1 ...

Brief introduction of Django model and background Author: once day date: February 13, 2022 This document is to summarize the relevant contents. Scattered knowledge is difficult to remember and learn. This document is based on windows platform. 1. Database configuration stay First met Django As mentioned in the article, Django is based on M ...

What is ORM? ORM, Object Relational Mapping (ORM) pattern, is a technology to solve the mismatch between object-oriented and relational databases. In other words, ORM acts as a translation function. Install third-party libraries pip install mysqlclient Create database What exactly can ORM help us do? Create, delete and modify tabl ...

CSS style sheet 1, Overview 1. What is CSS? Cascading style sheets, customizing the display style of html elements and beautifying the page are very important for the construction of front-end pages 2. Why use CSS (1) CSS refers to cascading style sheets (2) Styles define how HTML elements are displayed (3) Styles are usually stored in sty ...

Before Django (3. ListView view of common views) In, we mentioned that there are five common views. To add such an operation, we will use the CreateView view. The table also mentioned that using CreateView requires both Model and Form. Let's take a look at Form first. There are two main types of forms: Form (data should be verified manually, ...

Database (warehouse)Model (warehouse design drawing) fields: CharField，IntegerField，FloatField，DateTimeField，             OneToOneField，ManyToManyField，Foreignkey fields parameter: max_length,choices Instance (goods)QuerySet query set (package) List like objects Indexable, sliced, in (instance in queryset) Database connection Dja ...

Key points of this article:         1. How to respond faster through caching?         2. What is middleware?         3. How to realize the paging function of the website?         4. Generate csv fil ...

1, Static routing urlpatterns attribute urlpatterns is a global variable in the routing file, which is used to store the mapping relationship between routing and view functions The request URL initiated by the user will first enter the URLs under the main control directory Py file First find URLs The urlpatterns global variable under py, wh ...