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Django 2.0 基础
阅读量:223 次
发布时间:2019-02-28

本文共 2189 字,大约阅读时间需要 7 分钟。

1.创建

a、创建项目:对应文件cmd: django-admin startproject ~

b、然后cd到上面创建的~文件下创建app: python startapp ~
c、然后是运行: python runserver
e、数据库与模型modles对应,orm关系映射
1)模型通过orm转化成表(一个表对应一个模型里的类class)
首先执行生成迁移文件:python makemigrations
然后执行迁移:python migrate
2)数据库通过orm转化成模型

python manage.py inspectdb#将模型导入创建的app中去python manage.py inspectdb > app/models.py

2.设置

a、创建app添加到设置中

b、链接到数据库,后续需要

#连接数据库,然后记得init里写上  import pymysql   然后一句话换行 pymysql.install_as_MYSQLdb()# DATABASES = {#     'default': {#         'ENGINE': 'django.db.backends.mysql',#         'NAME': '',  #对应数据库名#         'USER':'',#         'PASSWORD':'',#         'HOST':'localhost',#         'POST':'3306',#     }# }

c、语言和时间格式

#语言和时间格式LANGUAGE_CODE = 'zh-Hans'TIME_ZONE = 'Asia/Shanghai'

d、templates模板和static静态文件设置

#模板TEMPLATES = [    {        'BACKEND': 'django.template.backends.django.DjangoTemplates',        'DIRS': [os.path.join(BASE_DIR,'templates')], #模板路径设置格式        'APP_DIRS': True,        'OPTIONS': {            'context_processors': [                'django.template.context_processors.debug',                'django.template.context_processors.request',                'django.contrib.auth.context_processors.auth',                'django.contrib.messages.context_processors.messages',            ],        },    },]#静态STATIC_URL = '/static/'STATICFILES_DIRS=[    os.path.join(BASE_DIR,'static')]MEDIA_ROOT=os.path.join(BASE_DIR,r'static/media')

e、app里urls与主项目urls管理关联

注意:include添加namespace报错需要在app urls里添加这句app_name=app名

#主urlsfrom django.contrib import adminfrom django.urls import path,includeurlpatterns = [    path('admin/', admin.site.urls),    path('',include('file.urls',namespace='file')),]
#app urlsfrom django.urls import pathfrom . import viewsapp_name="file"  #include添加namespace报错需要添加这句app_nameurlpatterns = [    path('',views.home,name='home'),    path('test/',views.test,name='test'),]

f、block块和static 引入问题

1)extends

#先base页面写上需要插入内容的块格式{% block c %} {% endblock  %}
#然后再需要引用的模板页面进行引用并插入相关内容{% extends './test.html' %}{% block c %}    块填入

{ {aa}}

{ {aa}}

{% endblock %}

1)load static

#首先也是需要先引入{% load static %}#然后这种格式插入静态文件内容{% static "file/img/timg.jpg" %}

g、urls name引用问题(可以路由地址随便变,模板页面引用了可以不用去改)

#主要就是url方法 

{ { aa }}

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