1.有两个模型如下 A.project class Project(models.Model): """ 项目表 """ id = models.AutoField(primary_key=True) name = models.CharField(max_length=50, verbose_name='项目名称') version = models.CharField(max_length=50, verbose_name='版本') typ
models.py from django.db import models # Create your models here. class Category(models.Model): """ 文章分类 """ name = models.CharField(verbose_name='分类',max_length=32) class Article(models.Model): """ 文章表 "&
梳理mysql外键约束的知识点. 1.mysql外键约束只对InnoDb引擎有效: 2.创建外键约束如下: DROP TABLE IF EXISTS t_demo_product; CREATE TABLE IF NOT EXISTS t_demo_product( proid ), proname ), price ), PRIMARY KEY(proid) )ENGINE=InnoDB DEFAULT CHARSET=gbk; DROP TABLE IF EXISTS t_demo_oper