自增列 = int(11) 如果没有的话,默认会生成一个名称为 id 的列,如果要显式的自定义一个自增列,必须设置primary_key=True 2、models.CharField 字符串字段,必须设置max_length参数 3、models.BooleanField 布尔类型=tinyint(1) 不能为空,可添加Blank=True 4、models.ComaSeparatedIntegerField 用逗号分割的数字...
name= models.CharField(max_length=50) region= models.CharField(max_length=20, choices=region_choices) desc= models.TextField(max_length=1000, null=True, blank=True)classMeta: verbose_name="俱乐部"verbose_name_plural=verbose_namedef__str__(self):returnself.nameclassSeason(models.Model): name=...
Model): name = models.CharField(max_length=80) something_else = MytypeField() 如果你意在构建一个兼容各种数据库的应用,你需要了解不同数据库列之间的差异。举个例子,PostgreSQL 中的 date/time 列类型叫做 timestamp,而 MySQL 中相同的列叫做 datetime。最简单的处理此问题的方法是在 db_type() 方法...
是一个用于限制字符字段最大长度的参数。它用于定义数据库中该字段可以存储的最大字符数。 在Django中,CharField是一种用于存储字符串数据的字段类型。Max_length参数是CharFie...
补充知识:Django-html中显示后台数据中CharField(choices=())字段类型的数据 1.后台代码: class Course(models.Model): degree = models.CharField(choices=(('cj',u'初级'),('zj',u'中级'),('gj',u'高级')),max_length=2,verbose_name=u'难度') ...
class Poll(models.Model): question = models.CharField(max_length=200) Following the example on the web page yields the error below. Removing the undescore from maxlength fixes this. I presume this is a django version skew issue. Perhaps the top of the doc might mention what django versio...
python-django 模型model字段类型说明 V=models.CharField(max_length=None<, **options>) #varchar V=models.EmailField(<max_length=75, **options="">) #varchar V=models.URLField(<verify_exists=true, **options="" max_length="200,">) #varchar ...
This example model defines a Person, which has a first_name and last_name: from django.db import models class Person(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30) first_name and last_name are fields of the model. Each field is...
IntegerField(default=0,verbose_name='委托人') level=models.CharField(max_length=4,verbo...
Model): address = models.CharField(max_length=200, null=True, blank=True, verbose_name="地址") pid = models.ForeignKey('self', null=True, blank=True, verbose_name="自关联字段") note = models.CharField(max_length=200, null=True, blank=True, verbose_name="说明") def __str__(self)...