如何在 django admin 中验证 TabularInline 的字段？答案

【问题标题】：how to validation fields for TabularInline in django admin?如何在 django admin 中验证 TabularInline 的字段？
【发布时间】：2023-02-18 23:17:08
【问题描述】：

我像这样创建一个 BaseInlineFormSet：

class ProductPictureRequiredFormSet(forms.models.BaseInlineFormSet):
    def clean(self):
        if self.cleaned_data["image"] == None:
            raise ValidationError("error")
        return self.cleaned_data["image"]

并在我的 TabularInline 类中使用此表单集：

class ProductPictureAdminInline(SortableTabularInline):
    formset = ProductPictureRequiredFormSet
    fields = ("title", "image", "is_default", "order", "created_by", "created_at", "updated_at")
    readonly_fields = ("created_by", "created_at", "updated_at")
    model = ProductPicture
    extra = 3

但我得到了这个错误：

BaseFormSet.__init__() got an unexpected keyword argument 'default_order_direction'

【问题讨论】：

标签： python django django-admin django-modeladmin

【解决方案1】：

有同样的问题，

将forms.models.BaseInlineFormSet更改为adminsortable2.admin.CustomInlineFormSet
自SortableTabularInline继承自SortableInlineAdminMixin

class SortableTabularInline(SortableInlineAdminMixin, admin.TabularInline):
    template = 'adminsortable2/edit_inline/tabular-django-{0}.{1}.html'.format(*DJANGO_VERSION)

它使用 CustomInlineFormSet 作为表单集

class CustomInlineFormSet(CustomInlineFormSetMixin, BaseInlineFormSet):
    pass

class SortableInlineAdminMixin:
    formset = CustomInlineFormSet
    def __init__(self, parent_model, admin_site):
        if parent_model in admin_site._registry:
            assert isinstance(admin_site._registry[parent_model], SortableAdminBase), 
                "{} must inherit from SortableAdminBase since {} inherits from SortableInlineAdminMixin.".format(
                    admin_site._registry[parent_model], self.__class__.__name__

所以试着改成

class ProductPictureRequiredFormSet(adminsortable2.admin.CustomInlineFormSet):
    def clean(self):
        if self.cleaned_data["image"] == None:
            raise ValidationError("error")
        return self.cleaned_data["image"]

它可能会解决问题。

【讨论】：