python3 django学习

环境信息

C:\Users\Administrator>python -m django --version
2.0.6

F:\python\web\web2>python
Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>

1、进入准备建立网站项目的文件页面,django-admin startproject mysite  #mysite是自己命名的,可以随意命名

2、进到mysite目录 python manage runserver

System check identified no issues (0 silenced).

You have 14 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
August 22, 2018 - 19:58:23
Django version 2.0.6, using settings 'mybook.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.

使用 http://172.0.0.1:8000/ 登录

3、创建应用 python manage startapp blog

首先配置以下视图文件

app中的views文件内容

from django.shortcuts import render

from django.http import HttpResponse

# Create your views here.
def index(request):
return render(request,'index.html')

这个文件中有一个index.html文件,此文件创立在app目录下的templates文件夹中,任意点击一个网页点击右键查看网页源代码保存下来的html格式文件

此处需要修改setting文件TEMPLATES中的'DIRS': ['templates'],以及INSTALLED_APPS中添加''blog'',加入新加的app名称

然后添加url路由,在mysite的urls文件中

urls.py文件内容

from django.contrib import admin
from django.urls import path
from app1 import views
urlpatterns = [
path('admin/', admin.site.urls),
path('',views.index),
]

这里和其他版本不同,写为正则表达的时候,程序运行错误

 

4、在models.py 写数据模型

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
class BlogArticles(models.Model):
  title = models.CharField(max_length=300)
  author = models.ForeignKey(User,related_name='blog_posts',on_delete = models.CASCADE,)
  body = models.TextField()
  publish = models.DateTimeField(default=timezone.now)

  class Meta:
    ordering = ('-publish',)
  def __str__(self):
    return self.title

开始报TypeError: __init__() missing 1 required positional argument: 'on_delete'错误,查询解决https://www.cnblogs.com/phyger/p/8035253.html

5、https://www.cnblogs.com/0bug/p/8193356.html

posted on 2018-06-04 23:30  棠巴巴  阅读(164)  评论(0编辑  收藏  举报

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