21_django configured two ways to use mysql database

There are two ways to configure django project mysql database

1. Add database configuration information directly in the file settings.py

# 配置数据库的第一种方式
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',     # 数据库引擎
        'NAME': 'cheng_pro',                      # 数据库名称
        'USER': 'cheng',                          # 数据库登录用户名
        'PASSWORD': 'yanyan',                     # 密码
        'HOST': '127.0.0.1',                      # 数据库主机IP, 默认为127.0.0.1
        'PORT': 3306                              # 数据库端口号 , 默认为3306
    }
}

2. The configuration information is stored to a database file, which is incorporated in the settings.py file. (recommend)

1. New database configuration file mysql.cnf (random name) # configuration file as follows:

   [client]
   database = cheng_pro
   user = cheng
   password = yanyan
   host = 127.0.0.1
   port = 3306
   default-character-set = utf8

2. References to use it in settings.py file

   # 配置数据库的第二种方式
   DATABASES = {
       'default': {
           'ENGINE': 'django.db.backends.mysql',     # 数据库引擎
           'OPTIONS': {
               'read_default_file': 'utils/dbs/mysql.cnf'     # 读取数据库配置文件
           }
       }
   }

   

Install mysql driver

1. mysqlclient * Recommended

pip install mysqlclient   
pip install -i https://pypi.douban.com/simple mysqlclient   # 使用douban源安装

If the installation mysqlclient error, you need to install the dependent mysqlclient: default-libmysqlclient-dev

sudo apt update     # 先更新软件包列表
sudo apt install default-libmysqlclient-dev    # 安装依赖

2. Use pymysql django2.2 above default does not support the use of the

Installation pymysql, and requires its own package file settings.py __init__.pyintroduced pymysql

pip install -i https://pypi.douban.com/simple pymysql

import pymysql
pymysql.install_as_MySQLdb()