[英]Django admin - How can I add the green plus sign for Many-to-many Field in custom admin form
The green plus sign button for adding new instances in the admin form disappears for my MultiSelect field (photos) when I define it in my form. 当我在我的表单中定义时,用于在管理表单中添加新实例的绿色加号按钮对于我的MultiSelect字段(照片)会消失。 Ie, removing the line with the definition (photos = ...) makes the plus sign appear. 即,删除带有定义的行(photos = ...)会出现加号。 However, in order to use a custom Field/Widget I need to figure this out. 但是,为了使用自定义Field / Widget,我需要弄清楚这一点。
class GalleryForm(ModelForm):
photos = ModelMultipleChoiceField(queryset=Photo.objects.all(), label="Photos")
def __init__(self, *args, **kwargs):
super(GalleryForm, self).__init__(*args, **kwargs)
I've peeked at the Django source code and it seems like I have to wrap my widget in a RelatedFieldWidgetWrapper, but I haven't quite gotten my head around it. 我偷看了Django的源代码,似乎我必须将我的小部件包装在一个RelatedFieldWidgetWrapper中,但我还没有完全理解它。 Any help is apprecietad! 任何帮助都是欣赏!
With the help from lazerscience and this post I ended up with the following. 在lazerscience和这篇文章的帮助下,我最终获得了以下内容。
The ModelAdmin: ModelAdmin:
class GalleryAdmin(admin.ModelAdmin):
form = GalleryForm
def __init__(self, model, admin_site):
self.form.admin_site = admin_site
super(GalleryAdmin, self).__init__(model, admin_site)
And my form: 我的形式:
class GalleryForm(ModelForm):
photos = ThumbnailChoiceField(queryset=Photo.objects.all(), label='Photos', widget=MyWidget(), required=False)
def __init__(self, *args, **kwargs):
super(GalleryForm, self).__init__(*args, **kwargs)
rel = ManyToOneRel(self.instance.photos.model, 'id')
self.fields['photos'].widget = RelatedFieldWidgetWrapper(self.fields['photos'].widget, rel, self.admin_site)
Yes you are right, you have to wrap your widget with django.contrib.admin.widgets.RelatedFieldWidgetWrapper
, which turns out to be a bit complicated since it expects the current admin site as a parameter for initialization! 是的,你是对的,你必须用django.contrib.admin.widgets.RelatedFieldWidgetWrapper
包装你的小部件,结果有点复杂,因为它希望当前的管理站点作为初始化的参数! Maybe you will find this post helpful! 也许你会发现这篇文章很有帮助!
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