python web开发——django学习(二)orm介绍与model检查

原始是这样连接数据库的：

 现在改用django orm

(1)先在setting里配置app

 (2)在modle.py里建model

class UserMessage(models.Model):
    object_id = models.CharField(max_length=50, primary_key=True, default="", verbose_name=u"主键")
    name = models.CharField(max_length=20, null=True, blank=True, default="", verbose_name=u"用户名")
    email = models.EmailField(verbose_name=u"邮箱")
    address = models.CharField(max_length=100, verbose_name=u"联系地址")
    message = models.CharField(max_length=500, verbose_name=u"留言地址")

    class Meta:
        verbose_name = u"用户留言信息"
        verbose_name_plural = verbose_name

 (3)运行manage.py，移植

manage.py@djangostart > makemigrations message
manage.py@djangostart > migrate message

(4)看看数据库新建表成功啦