Getting Started with the Django web framework

Last Update:2017-10-27 Source: Internet

Author: User

Tags install django

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I. Django INTRODUCTION

Django is an open-source Web application framework, written in Python, using the MVC framework pattern. The main purpose of Django is to develop a database-driven Web site quickly and easily. It emphasizes code reuse, multiple components can be conveniently in the form of "plug-in" to serve the entire framework, Django has many powerful third-party plug-ins, it is easy to develop their own toolkit.

Two. Create a Django Project

Environment: Django (1.11.6)

Install Django using PIP

[email protected]:~# python3-m pip install Django

New Project (project named Django)

[email protected]:~/root/web# django-admin.py startproject Django

Run the project

[email protected]:~/root/web/django# python3 manage.py runserver

Access Address http://127.0.0.1:8000

Three. Create a Django App

New app (app under Project, app named user)

[email protected]:~/root/web/django# python3 manage.py Startapp user

Modify the Django project configuration django/settings.py, add the user app to the Django project, modify the Installed_apps item to increase the user

Installed_apps = [    'Django.contrib.admin',    'Django.contrib.auth',    'Django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'Django.contrib.staticfiles',    'User',#Add User]

Modifying User/models.py,model is equivalent to encapsulating a database table, the class name user represents the database table name, username and password are field names

 from Import Models class User (models. Model):    #  Django will automatically add an ID as the primary key    username = models. Charfield (max_length=64)    = models. Charfield (max_length=64)

Notifies the Django project that the user application model has changed

[email protected]:~/root/web/django# python3 manage.py makemigrations user

Create a database table structure

[email protected]:~/root/web/django# python3 manage.py Migrate

Modify the Django project configuration django/settings.py, set the static file access directory, add the file last

Static_root = Os.path.join (Base_dir,'Static') Staticfiles_dirs= (    ("CSS", Os.path.join (Static_root,'CSS')),    ("JS", Os.path.join (Static_root,"JS")),    ("Images", Os.path.join (Static_root,"Images")),)

Add views for adding data and presentation data, modifying user/views.py

 fromDjango.shortcutsImportRender fromUser.modelsImportUser fromDjango.httpImportHttpResponsedefAdd (Request): U= Request. get["username"] P= Request. get["Password"] User= User (Username=u, password=p) user.save ()returnHttpResponse ("Success")deflist (Request): List=User.objects.all () context=dict () context["Users"] =ListreturnRender (Request,'list.html', context)

Create a front-end page of data presentation, create a templates/list.html

{% load static%}<!DOCTYPE HTML><HTMLLang= "en"><Head>    <MetaCharSet= "UTF-8">    <title>Title</title>    <Linkhref= "{% static ' css/bootstrap.css '%}"rel= "stylesheet"></Head><Body><Divclass= "Container">    <Divclass= "Row">        <Tableclass= "Table">            <thead>                <TR>                    <th>Id</th>                    <th>User name</th>                    <th>Password</th>                </TR>            </thead>            <tbody>{% for user in users%}<TR>                    <TD>{{User.ID}}</TD>                    <TD>{{User.username}}</TD>                    <TD>{{User.password}}</TD>                </TR>{% endfor%}</tbody>        </Table>    </Div></Div><Scriptsrc= "{% static ' js/jquery-3.2.1.js '%}"></Script><Scriptsrc= "{% static ' js/bootstrap.js '%}"></Script></Body></HTML>

New static directory, add list.html dependent CSS and JS files, directory structure

[Email protected]:~/root/web/django# tree static/static/|-- css|   '-- bootstrap.min.css '-- js    |-- bootstrap.min.js    '--jquery-3.2.  1. min.js

Modify the Django Project routing configuration django/urls.py to increase the routing of the View list and the Add method

 fromDjango.conf.urlsImportURL fromDjango.contribImportAdmin fromUserImportviews as User_viewurlpatterns=[url (r'^admin/', admin.site.urls), url (r'Add', user_view.add), url (r'List', User_view.list),]

Four. Verification Project

Run the deployment

[Email protected]:~/root/web/django# python3 manage.py runserver

Call the Add interface to add a record

Access Address http://127.0.0.1:8000/add?username=Google&password=123456

Access Address Http://127.0.0.1:8000/list

Getting Started with the Django web framework

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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