如何在ModelAdmin中使用InlinePanel? [英] How to use InlinePanel in ModelAdmin?

问题描述

我正在建立一个需要使用多个子模型实例创建的模型.我希望能够在管理界面中编辑和创建此模型，所以我可以使用文档，我应该能够根据正常的 Page 类型指定字段/面板；但是，当我添加 InlinePanel 我在相关字段名称上得到了 KeyError .

I'm setting up a model that needs to be created with a number of instances of a sub-model. I want to be able to edit and create this model in the admin interface so I'm adding it using ModelAdmin. According to the documentation I should be able to specify the fields/panels in accordance to normal Page types; however, when I add a InlinePanel I get an KeyError on the related field name.

models.py

class Application(models.Model):
    # other fields....

    panels = [MultiFieldPanel([
        FieldPanel('applicant'),
        FieldPanel('position'),
        FieldPanel('cover_letter'),
        FieldPanel('qualifications'),
        InlinePanel('references'),
        FieldPanel('draft'),
    ])]


class Reference(models.Model):

    application = models.ForeignKey(
        Application,
        related_name='references',
        on_delete=models.CASCADE,
        blank=False,
    )

    # other fields....

wagtails_hooks.py

class ApplicationAdmin(ModelAdmin):
    model = Application
    menu_icon = 'mail'
    menu_order = 400
    list_display = # other fields....

modeladmin_register(ApplicationAdmin)

错误

请求网址: http://127.0.0.1:8000/admin/involvement/application/create/

Django版本:1.10.5

Django Version: 1.10.5

异常类型:KeyError

Exception Type: KeyError

异常值:引用"

异常位置:/[APPFOLDER]/venv/lib/python3.6/site-packages/wagtail/wagtailadmin/edit_handlers.py在 init 行627

Exception Location: /[APPFOLDER]/venv/lib/python3.6/site-packages/wagtail/wagtailadmin/edit_handlers.py in init, line 627

我无法确定自己做错了什么.有人能指出我正确的方向吗?

I'm having trouble determining what I did wrong. Can anybody point me in the right direction?

推荐答案

Wagtail依赖 django-modelcluster 库，以允许将父模型和子模型以表单的形式作为单个单元进行处理.为此，基本的应用程序模型必须继承 modelcluster.models.ClusterableModel (Wagtail Page 模型作为标准模型)，并且必须链接子模型通过 ParentalKey 而不是 ForeignKey .

Wagtail relies on the django-modelcluster library to allow the parent and child models to be handled in forms as a single unit. For this to work, the base Application model has to inherit from modelcluster.models.ClusterableModel (the Wagtail Page model does this as standard) and the child model has to be linked by a ParentalKey rather than a ForeignKey.

子模型通常也是 Orderable 的子类，因此可以对其进行排序.我不记得这是绝对要求还是仅仅是建议.

Child models in an InlinePanel are also typically subclasses of Orderable, so they can be sorted; off the top of my head I can't remember whether this is an absolute requirement, or just a recommendation.

from modelcluster.models import ClusterableModel

class Application(ClusterableModel):
    # ...

class Reference(Orderable):
    application = models.ParentalKey(
        Application,
        related_name='references',
        on_delete=models.CASCADE,
        blank=False,
    )

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