万里长征第二步——django个人博客（第四步 ——创建数据库）

Posted 2020-07-19

1. 在models.py内设置数据库模型

   # -*- coding=utf-8 -*-
   from __future__ import unicode_literals
   from django.db import models
   from django.contrib.auth.models import AbstractBaseUser
   # Create your models here.
   
   # 用户模型.
   #第一种：采用的继承方式扩展用户信息（本系统采用）
   #扩展：关联的方式去扩展用户信息
   class User(AbstractBaseUser):
       avatar = models.ImageField(upload_to=‘avatar/%Y/%m‘, default=‘avatar/default.png‘, max_length=200, blank=True, null=True, verbose_name=‘用户头像‘)
       qq = models.CharField(max_length=20, blank=True, null=True, verbose_name=‘QQ号码‘)
       mobile = models.CharField(max_length=11, blank=True, null=True, unique=True, verbose_name=‘手机号码‘)
   
   class Meta:
           verbose_name = ‘用户‘
   verbose_name_plural = verbose_name
           ordering = [‘-id‘]
   
   def __unicode__(self):
   return self.username

    

2. 在setting.py内将数据库类型 ‘DATABASES‘ 更改为mysql，并自定义要给model

   DATABASES = {
   ‘default‘: {
   ‘ENGINE‘: ‘django.db.backends.mysql‘,
   ‘NAME‘: ‘blogdb‘,
   ‘USER‘: ‘root‘,
   ‘PASSWORD‘: ‘664390‘,
   ‘HOST‘: ‘‘,
   ‘POST‘: ‘‘,
       }
   }
   #自定义model
   AUTH_USER_MODEL = ‘blog.User‘

    

3. 创建mysql数据库，进入命令行

   C:\Users\66439>mysql -uroot -p664390  ——进入mysql数据库
    
   mysql> CREATE DATABASE blogdb;  ——创建一个 ‘blogdb‘ 表
   Query OK, 1 row affected (0.00 sec)

    

4. 进入虚拟环境

   D:\python\blog_project>d:\python\blog_project_venv\Scripts\activate

    

5. 生成数据库同步文件

   (blog_project_venv) D:\python\blog_project>manage.py makemigrations
   2016-05-25 23:16:29,582 [MainThread:9804] [django.db.backends:89] [utils:execute] [DEBUG]- (0.000) SET SQL_AUTO_IS_NULL = 0; args=None
   Migrations for ‘blog‘:
     0001_initial.py:
       - Create model Ad
       - Create model Article
       - Create model Catagory
       - Create model Category
       - Create model Comment
       - Create model Links
       - Create model Tag
       - Create model User
       - Add field user to comment
       - Add field category to article
       - Add field tag to article

   makemigrations blog ——带上 ‘blog‘ ，只生成 ‘blog‘ 内的 ‘models.py‘

       - Add field user to article

    

6. 同步数据库

   (blog_project_venv) D:\python\blog_project>manage.py migrate