django：顺序和显示名称冲突

Question

我有一个使用用户作为 forgignKey 的模型。在管理员中，我需要它显示为全名而不是用户名。然后我应用

class CollaboratorInLine(admin.StackedInline):
    model = Collaborator
    #list_display = ('collaborator__collaborator_first_name')
    extra = 0
    form =CollaboratorForm
    #raw_id_fields=("collaborator",)

    def formfield_for_foreignkey(self, db_field, request=None, **kwargs):
        field = super(CollaboratorInLine, self).formfield_for_foreignkey(
                                                db_field, request, **kwargs)
        if db_field.rel.to == User:
            field.label_from_instance = self.get_user_label
        return field
    def formfield_for_manytomany(self, db_field, request=None, **kwargs):
        field = super(CollaboratorInLine, self).formfield_for_manytomany(
                                                db_field, request, **kwargs)
        if db_field.rel.to == User:
            field.label_from_instance = self.get_user_label
        return field
    def get_user_label(self, user):   
        name = user.get_full_name()  
        return name

它作为带有全名的下拉列表运行良好。然后我想按字母顺序对它们进行排序。 然后我就

class CollaboratorForm(forms.ModelForm):
    collaborator = forms.ModelChoiceField(queryset=User.objects.order_by('first_name'))
    #assert False,collaborator
    class Meta:
        model = Collaborator

按照这个申请了。全名再次变成用户名。如果我删除它，它就会变成全名。 那么我怎样才能保留这两个功能呢？

谢谢

Answer 1

尝试子类化 ModelChoiceField 并重写 label_for_instance 方法以显示全名。

class MyModelChoiceField(ModelChoiceField): 
    def label_from_instance(self, obj): 
        return obj.get_full_name()

然后在模型表单中使用新字段。

class CollaboratorForm(forms.ModelForm):
        collaborator = MyModelChoiceField(queryset=User.objects.order_by('first_name'))
        #assert False,collaborator
        class Meta:
            model = Collaborator