django 连接mysql

Posted 2020-07-24 开源、架构、Linux C/C++/python AI BI

1、新建一个mysite项目：django-admin startproject mysite 

2、进入项目目录，新建一个app ： python manage.py startapp polls

3、安装mysqlclient ：pip install mysqlclient

4、在settings.py  database中设置数据库连接配置

DATABASES = {
    \'default\': {
        \'ENGINE\': \'django.db.backends.mysql\',
        \'NAME\': \'my_web\',
        \'USER\': \'root\',
        \'PASSWORD\': \'password\',
        \'HOST\': \'127.0.0.1\',
        \'PORT\': \'3306\',
    }
}

5、执行命令： python manage.py migrate

在数据库中自动创建web系统使用到的表

 

6、编辑polls/models.py文件内容

from django.db import models


class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField(\'date published\')


class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)

 

7、修改mysite/settings.py 文件INSTALLED_APPS 添加  \'polls.apps.PollsConfig\',

INSTALLED_APPS = [
    \'polls.apps.PollsConfig\',
    \'django.contrib.admin\',
    \'django.contrib.auth\',
    \'django.contrib.contenttypes\',
    \'django.contrib.sessions\',
    \'django.contrib.messages\',
    \'django.contrib.staticfiles\',
]

7、执行命令：python manage.py makemigrations polls

Migrations for \'polls\':
  polls/migrations/0001_initial.py:
    - Create model Choice
    - Create model Question
    - Add field question to choice

8、执行命令:python manage.py sqlmigrate polls 0001

 9 再执行python manage.py migrate 命令，创建数据库表