Wagtail ModelAdmin 清理和验证相互依赖的字段

Question

在 Django 中，您可以向表单添加一个 clean 方法来验证相互依赖的字段:

def clean_recipients(self):
    data = self.cleaned_data['recipients']
    if "fred@example.com" not in data:
        raise ValidationError("You have forgotten about Fred!")

    # Always return a value to use as the new cleaned data, even if
    # this method didn't change it.
    return data

如何使用干净的方法将自定义表单添加到 Wagtail ModelAdmin ？

Wagtail 具有面板 概念并动态构建表单。我找不到任何关于覆盖表单的信息。有关于自定义创建和更新 View 的信息。自定义 View 似乎有点麻烦。

Answer 1

我通过 Wagtail Slack 表单 @CynthiaKiser 得到了答案。

base_form_class 允许您在模型上设置 WagtailAdminModelForm。

from wagtail.admin.forms import WagtailAdminModelForm

class Foo(models.Model):
    ...
    base_form_class = FooForm


class FooForm(WagtailAdminModelForm):  # For pages use WagtailAdminPageForm
    def clean(self):
        data = self.cleaned_data['recipients']
        if "fred@example.com" not in data:
            raise ValidationError("You have forgotten about Fred!")
        return data

您在 Wagtail 中遇到的所有 CRUD 表单都只是下面的 Django ModelForm 实例，所以 these Django docs are relevant (感谢@ababic)

base_form_class 的替代方法是在模型上指定一个干净的方法。它将以任何形式被调用。

from django.core.exceptions import ValidationError

class Foo(models.Model):
    ...
    def clean(self):
        if "fred@example.com" not in self.recipients:
            raise ValidationError(
                {'recipients': _("You have forgotten about Fred!")}
            )