在Django管理内联中使用的form_类中获取外键实例
我有一个使用自定义表单类的管理内联。如何从该表单类的函数中访问父实例(外键) 相关代码如下: models.py:在Django管理内联中使用的form_类中获取外键实例,django,django-admin,inline-formset,Django,Django Admin,Inline Formset,我有一个使用自定义表单类的管理内联。如何从该表单类的函数中访问父实例(外键) 相关代码如下: models.py: class Bar(models.Model): name = models.CharField(max_length=50) class Foo(models.Model): name = models.CharField(max_length=50) bar = models.ForeignKey(Bar, null=True, blank=True,
class Bar(models.Model):
name = models.CharField(max_length=50)
class Foo(models.Model):
name = models.CharField(max_length=50)
bar = models.ForeignKey(Bar, null=True, blank=True, related_name="foos")
admin.py:
class FooInlineAdmin(admin.TabularInline):
model = Foo
form = AdminFooForm
max_num = 3
class Bar(admin.ModelAdmin):
inlines = [FooInlineAdmin]
forms.py:
class AdminFooForm(forms.ModelForm):
class Meta:
model = Foo
def clean(self):
data = self.cleaned_data
mybar = self.get_foreign_key_somehow() # this is the line I'm interested in
我知道一旦有了一个实际的实例,我就可以使用instance.bar
访问它。然而,这只在有记录的情况下有效,对吗?因此,如果我使用此表单创建记录,实例将为无。尝试一下:
class FooInlineFormset(forms.models.BaseInlineFormSet):
def clean(self):
for form in self.forms:
try:
if form.cleaned_data:
delete = form.cleaned_data.get('DELETE')
if not delete:
bar = form.cleaned_data.get('bar', None)
except AttributeError:
pass
class FooInlineAdmin(admin.TabularInline):
model = Foo
formset = FooInlineFormset
form = AdminFooForm
max_num = 3
希望这能帮到你