基类及模型类的创建

# django模型类

# 基类及模型类的创建

1、基类

class BaseMode(models.Model):
    #                                    数据创建时间
    created_time = models.DateTimeField(auto_now_add=True, verbose_name="数据创建时间")
    #                                  数据更新时间
    update_time = models.DateTimeField(auto_now=True, verbose_name="数据更新时间")

2、运用基类

class Department(BaseMode):
    name = models.CharField(max_length=30, verbose_name="部门")

    def __str__(self):
        return self.name

    class Meta:
        db_table = "deparment"


class Duty(BaseMode):
    name = models.CharField(max_length=50, verbose_name="工作职责")

    class Meta:
        db_table = "duty"

    def __str__(self):
        return self.name

3、模型类创建

class Staff(models.Model):
    SEX_CHICE = (
        (0, '男'),
        (1, '女')
    )
    name = models.CharField(max_length=50, verbose_name="员工姓名")
    #            小整型   这个类型是个小型内存
    sex = models.SmallIntegerField(default=0, choices=SEX_CHICE, verbose_name="员工性别")
    phone = models.CharField(max_length=50, verbose_name="员工手机号")
    email = models.CharField(max_length=50, verbose_name="员工的邮箱")
    department = models.ForeignKey(to=Department, on_delete=models.CASCADE, verbose_name="外键所属部门")
    duty = models.ForeignKey(to=Duty, on_delete=models.CASCADE, verbose_name="外键所属职务")

    class Meta:
        db_table = "staff"

    def __str__(self):
        return self.name