【Django 笔记】第一个demo

1. pip 安装

2. django 指令

复制代码
D:\software\python3\anconda3\Lib\site-packages\django\bin>django-admin

Type 'django-admin help <subcommand>' for help on a specific subcommand.

Available subcommands:

[django]
    check
    compilemessages
    createcachetable
    dbshell
    diffsettings
    dumpdata
    flush
    inspectdb
    loaddata
    makemessages
    makemigrations
    migrate
    runserver
    sendtestemail
    shell
    showmigrations
    sqlflush
    sqlmigrate
    sqlsequencereset
    squashmigrations
    startapp
    startproject
    test
    testserver
Note that only Django core commands are listed as settings are not properly configured (error: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.).

3.创建项目

复制代码
D:\software\python3\anconda3\Lib\site-packages\django\bin>django-admin  startproject guest
CommandError: [WinError 5] 拒绝访问。: 'D:\\software\\python3\\anconda3\\Lib\\site-packages\\django\\bin\\guest

python - Django creating new project - access is denied - Stack Overflow

问题解决 ;

选择其他路径创建,不要再 'D:\\software\\python3\\anconda3\\Lib\\site-packages\\django\\bin下执行命令

4 目录结构 :

查看 manange 提供的命令

复制代码
E:\data\python\djaongo_prj>cd  guest

E:\data\python\djaongo_prj\guest>  python manage.py

Type 'manage.py help <subcommand>' for help on a specific subcommand.

Available subcommands:

[auth]
    changepassword
    createsuperuser

[contenttypes]
    remove_stale_contenttypes

[django]
    check
    compilemessages
    createcachetable
    dbshell
    diffsettings
    dumpdata
    flush
    inspectdb
    loaddata
    makemessages
    makemigrations
    migrate
    sendtestemail
    shell
    showmigrations
    sqlflush
    sqlmigrate
    sqlsequencereset
    squashmigrations
    startapp
    startproject
    test
    testserver

[sessions]
    clearsessions

[staticfiles]
    collectstatic
    findstatic
    runserver

E:\data\python\djaongo_prj\guest>

官方命令文档 : django-admin and manage.py | Django documentation | Django

5.创建应用 sign

E:\data\python\djaongo_prj\guest>python manage.py startapp sign

运行 :

python manager.py runserver

http://127.0.0.1:8000/

如果运行失败可能出现端口占用 : python manager.py runserver 127.0.0.1:8001 运行

127.0.0.1 表示本机的IP地址 8001: 是端口

guest/settings.py 添加项目 sign

复制代码
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'sign'
]

6显示 Hello Django!

guest/urls.py

url(r'^index/$', views.index), # 添加 index 、路径配置

复制代码
"""guest URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.2/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.conf.urls import url
from django.contrib import admin
from django.urls import path
from sign import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^index/$', views.index),  # 添加 index 、路径配置
]

sign/views.py

复制代码
from django.shortcuts import render

# Create your views here.
from django.http  import  HttpResponse

# 定义inex 函数,通过HttpResponse 类向客户端返回字符创
def index(request):
    return HttpResponse("Hello Django!")

7.使用模版

创建 templates (文件名称不要随便改django 默认从这个路径下找html)

sign/templates/index.html

复制代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <h1> Hello Django!<h1>
</head>
<body>

</body>
</html>

8.修改 sign/views.py

return render(request,"index.html") 使用 render函数

复制代码
from django.shortcuts import render

# Create your views here.
from django.http  import  HttpResponse

# 定义inex 函数,通过HttpResponse 类向客户端返回字符创
def index(request):
    #return HttpResponse("Hello Django!")  # 使用Django 的render函数
    return  render(request,"index.html")

Django 工作流

相关推荐
aaaameliaaa4 小时前
字符函数和字符串函数
c语言·笔记·算法
tq10866 小时前
开放与封闭:类型系统的安全哲学
笔记
龙仔7256 小时前
人大金仓 KingbaseES V8 只读账号创建完整运维笔记
运维·笔记·sql·人大金仓
韭菜炒鸡肝天6 小时前
VTK开发笔记(一):VTK介绍,Qt..+VSx+VTK.编译
开发语言·笔记·qt
峥无9 小时前
C++11 深度详解:现代 C++ 基石全梳理
开发语言·c++·笔记
阿米亚波9 小时前
【C++ STL】std::unordered_multimap
开发语言·数据结构·c++·笔记·stl
早睡早起身体好12311 小时前
为什么 Network 中会出现两个同名请求?——CORS 预检请求学习笔记
网络·笔记·学习·网络安全
@Mike@12 小时前
06-数据库学习笔记(存储模型与数据压缩)
数据库·笔记·学习
不在逃避q13 小时前
Golang笔记之Redis
redis·笔记·golang
wdfk_prog13 小时前
嵌入式面试真题学习笔记系列
笔记·学习·面试