-
覆盖
contribute_to_class()
属于
ForeignKey
相关名称
class CustomFk(models.ForeignKey):
def contribute_to_class(self, cls, name, private_only=False, **kwargs):
super().contribute_to_class(cls, name, private_only=False, **kwargs)
self.remote_field.related_name = "_".join(re.findall('[A-Z][^A-Z]*', cls.__name__))
2用这个
自定义FK字段
抽象模型。
class Invoice(models.Model):
user = CustomFk(User, related_name='%(class)s')
class Meta:
abstract = True
# migrations file
operations = [
migrations.CreateModel(
name='PurchaseInvoice',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('field_purchase', models.CharField(max_length=255)),
('user', sample.models.CustomFk(on_delete=django.db.models.deletion.CASCADE,
related_name='Purchase_Invoice', to=settings.AUTH_USER_MODEL)),
],
options={
'abstract': False,
},
),
migrations.CreateModel(
name='SaleInvoice',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('field_sale', models.CharField(max_length=255)),
('user', sample.models.CustomFk(on_delete=django.db.models.deletion.CASCADE,
related_name='Sale_Invoice', to=settings.AUTH_USER_MODEL)),
],
options={
'abstract': False,
},
),
]
参考
*.
contribute_to_class()
*.
Split string with uppercase letters- Python