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from django.core.validators import MinValueValidator
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from django.db import models
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# Create your models here.
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class Admin(models.Model):
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""" 管理员 """
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username = models.CharField(verbose_name="用户名", max_length=32)
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password = models.CharField(verbose_name="密码", max_length=64)
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def __str__(self):
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return self.username
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class Department(models.Model):
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""" 部门表 """
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title = models.CharField(verbose_name='标题', max_length=32)
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def __str__(self):
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return self.title
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class UserInfo(models.Model):
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""" 员工表 """
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name = models.CharField(verbose_name="姓名", max_length=16)
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password = models.CharField(verbose_name="密码", max_length=64)
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age = models.IntegerField(verbose_name="年龄", validators=[MinValueValidator(0, message="年龄不能为负数")])
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account = models.DecimalField(verbose_name="工资", max_digits=10, decimal_places=2, default=0,
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validators=[MinValueValidator(0, message="工资不能为负数")])
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create_time = models.DateField(verbose_name="入职时间")
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# 无约束
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# depart_id = models.BigIntegerField(verbose_name="部门ID")
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# 1.有约束
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# - to，与那张表关联
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# - to_field，表中的那一列关联
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# 2.django自动
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# - 写的depart
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# - 生成数据列 depart_id
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# 3.部门表被删除
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# ### 3.1 级联删除
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depart = models.ForeignKey(verbose_name='部门', to="Department", to_field="id", on_delete=models.CASCADE)
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# ### 3.2 置空
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# depart = models.ForeignKey(to="Department", to_field="id", null=True, blank=True, on_delete=models.SET_NULL)
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# 在django中做的约束
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gender_choices = (
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(1, "男"),
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(2, "女"),
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)
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gender = models.SmallIntegerField(verbose_name="性别", choices=gender_choices)
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