我有一些模型:
class GroupType(models.Model):
name = models.CharField(max_length=255)
class Group(models.Model):
name = models.CharField(max_length=255)
group_type = models.ForeignKey(GroupType)
class Person(models.Model):
name = models.CharField(max_length=255)
groups = models.ManyToManyField(Group, related_name="+")
但在 ModelAdmin 中,我想为每个组类型动态添加字段。所以如果我有两种组类型public
, private
,我希望管理表单显示两个字段public_groups
and private_groups
而不是实际的数据库字段groups
.
更多信息
我尝试创建自定义表单来动态添加字段:
class PersonAdminForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(PersonAdminForm, self).__init__(*args, **kwargs)
new_fields = {}
for group_type in GroupType.objects.all():
field_name = "{0}_groups".format(group_type.name.lower())
qs = Group.objects.filter(group_type=group_type)
field_field = forms.ModelMultipleChoiceField(queryset=qs)
new_fields[field_name] = field_field
self.fields.update(new_fields)
class Meta:
model = Person
fields = '__all__'
就将字段添加到表单而言,这似乎可以解决问题。但是保存这些字段并将它们添加到PersonAdmin
不起作用。如果我将字段显式添加到fields
属性上的PersonAdmin
I get:
FieldError: Unknown field(s) (public_groups, private_groups) specified for Person. Check fields/fieldsets/exclude attributes of class PersonAdmin.
当尝试通过自定义“动态”添加它们时,我也得到了同样的结果get_formsets
method:
def get_fieldsets(self, request, obj=None):
fieldsets = super(PersonAdmin, self).get_fieldsets(request, obj)
print(self.form.fields)
fieldsets[0][1]['fields'].extend(['public_groups', 'private_groups'])
return fieldsets