我正在使用 Django 3.2，我想創建一個包含 2 個欄位的抽象類，其默認值（或它們的空白屬性）可以在每個子類中更改。
我不想覆寫完整的欄位，而只想覆寫更改的選項。這樣，如果我決定將來使 icon 欄位唯一，我應該只更改父抽象類而不是所有子模型。
# behaviors.py
from django.db import models
from colorfield.fields import ColorField
class Representable(models.Model):
color = ColorField(_("color in the app"), blank=True)
icon = models.CharField(_("icon in the app"), max_length=50, blank=True)
class Meta:
abstract = True
# models.py
from django.db import models
from .behaviors import Representable
class Item(Representable, models.Model):
name = models.CharField(_("name"), max_length=50, blank=False)
# color couldn't be blank
# icon couldn't be blank
class Meta:
verbose_name = _("item")
verbose_name_plural = _("items")
class Tag(Representable, models.Model):
name = models.CharField(_("name"), max_length=200, blank=False, unique=True)
# color default value shoud be #00AEC7 (but could be blank)
# icon default value shoud be mdi-label (but could be blank)
class Meta:
verbose_name = _("tag")
verbose_name_plural = _("tags")
有任何想法嗎？
uj5u.com熱心網友回復：
您可以覆寫抽象模型子類中的欄位并設定您想要的任何屬性
class Tag(Representable):
...
color = ColorField(_("color in the app"), blank=True, default='#00AEC7')
icon = models.CharField(_("icon in the app"), max_length=50, blank=True, default='mdi-label')
uj5u.com熱心網友回復：
不是專家，但這可以作業：
from django.db import models
from .behaviors import Representable
class Item(Representable):
name = models.CharField(_("name"), max_length=50, blank=False, null=True)
color = ColorField(_("color in the app"), blank=False)
icon = models.CharField(_("icon in the app"), max_length=50, blank=False)
class Meta:
verbose_name = _("item")
verbose_name_plural = _("items")
class Tag(Representable):
name = models.CharField(_("name"), max_length=200, blank=False, unique=True)
color = ColorField(_("color in the app"), blank=True,null=True, default='#00AEC7')
icon = models.CharField(_("icon in the app"), max_length=50, blank=True, null=True, default='mdi-label')
class Meta:
verbose_name = _("tag")
verbose_name_plural = _("tags")
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標籤：Python 姜戈 哎呀 遗产 django-models
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