w页面模型与其自身之间的多对多关系？

Question

因此，我得到了一个带有“ companion”字段的PlantDetailPage模型（是的，植物可以是同伴），在其中我应该能够选择其他PlantDetailPages。我得到了显示的内容，以内联方式创建新工厂（是的，菜单中的菜单...），但是有几个问题：

1）只是不会选择它们（单击“选择plantdetailpage”时不执行任何操作）

2）“伴侣”菜单按钮现在显示在左侧（就像它变成的摘要一样？）-我想避免。

3）我不知道如何将伴随的内联选择器限制为仅选择而不创建更多PlantDetailPages（这样就不会递归窗口）？

这是models.py中的模型：

class PlantCompanion(ClusterableModel):
    companion = models.ForeignKey(
        "vegependium.PlantDetailPage", on_delete=models.SET_NULL, related_name="plants", null=True
    )
    plant = ParentalKey(
        "vegependium.PlantDetailPage",
        on_delete=models.SET_NULL,
        related_name="companions",
        null=True,
    )
    panels = [InstanceSelectorPanel("companion")]
class PlantDetailPage(Page):
    genus_species = models.CharField(max_length=100, blank=False, null=False)
    # soo many other fields
    content_panels = Page.content_panels + [
        #soo many other panels
        FieldPanel("alternative_names")
                ],
            heading=_("names")
        ),
        MultiFieldPanel(heading=_("Companions"), children=[InlinePanel("companions")]),
        #even more panels
    ]
    def get_context(self, request):
        context = super().get_context(request)
        context["plant"] = self  # needed?
        # You always can access the page object via "page" or "self" in the template!
        return context

和在admin.py中：

class CompanionAdmin(ModelAdmin):
    """Modeladmin definitions for sompanions."""
    model = PlantDetailPage
    menu_label = _("Companions")
    menu_icon = "snippet"
    menu_order = 499  # defines the menu position (e.g. after "images")
    add_to_settings_menu = False
    exclude_from_explorer = True
    list_filter = []  # list attributes with only few choices
    list_display = [
        "genus_species",
    ]  # columns to show up in admin (including one dynamic column)
    search_fields = ["genus_species"]  # columns to search in
modeladmin_register(CompanionAdmin)

Answer 1

from modelcluster.fields import ParentalManyToManyField

class PlantPage(Page):
    related_plants = ParentalManyToManyField('self', blank=True)

    content_panels = Page.content_panels + [
        FieldPanel('related_plants'),
    ]

此关系是对称的，如果A与B有关，B与A有关。

文档https://docs.wagtail.io/en/stable/getting_started/tutorial.html?highlight=ParentalManyToManyField该示例使用复选框小部件。

FieldPanel('categories', widget=forms.CheckboxSelectMultiple),