【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
freexyn6 分钟前
Matlab自学笔记六十一:快速上手解方程
数据结构·笔记·matlab
寻丶幽风3 小时前
论文阅读笔记——NoPoSplat
论文阅读·笔记·三维重建·3dgs·相机位姿·dustr
西岭千秋雪_5 小时前
Redis缓存架构实战
java·redis·笔记·学习·缓存·架构
XvnNing5 小时前
【Verilog硬件语言学习笔记4】FPGA串口通信
笔记·学习·fpga开发
海棠蚀omo5 小时前
C++笔记-位图和布隆过滤器
开发语言·c++·笔记
大胡子大叔6 小时前
webrtc-streamer视频流播放(rstp协议h264笔记)
笔记·webrtc·rtsp·webrtc-streamer
山野万里__7 小时前
C++与Java内存共享技术:跨平台与跨语言实现指南
android·java·c++·笔记
寻丶幽风9 小时前
论文阅读笔记——VGGT: Visual Geometry Grounded Transformer
论文阅读·笔记·transformer·三维重建·3dgs·vggt
天水幼麟10 小时前
python学习笔记(深度学习)
笔记·python·学习
you458010 小时前
小程序学习笔记:使用 MobX 实现全局数据共享,实例创建、计算属性与 Actions 方法
笔记·学习·小程序