Question

以下是模型示例：

HList

这是锻炼的Admin类：

class Books(models.Model):
    ...

class Chapter(models.Model):
    ... 
    book = models.ForeignKey('Books')

class Exercise(models.Model):
    ...
    book = models.ForeignKey('Books')
    chapter = models.ForeignKey('Chapter')

我现在为class ExerciseAdmin(admin.ModelAdmin): ... list_filter = (('book',admin.RelatedOnlyFieldListFilter),('chapter',admin.RelatedOnlyFieldListFilter)) admin.site.register(Exercise, ExerciseAdmin)设置了过滤器book和chapter。当我点击过滤器exercise中的book时，它会相应地显示所选book的所有exercises。但是在过滤器book列表中，它仍会显示所有chapter的所有chapters。

有没有办法只在过滤器books中显示我在第一个过滤器chapter中选择的chapters的{{1}}？怎么样？

Answer 1

您是否通过管理员文档https://docs.djangoproject.com/en/1.10/ref/contrib/admin/#django.contrib.admin.ModelAdmin.list_filter使用SimpleListFilter

查看了此内容

此线程中的示例... Creating Custom Filters for list_filter in Django Admin

猜猜......

from django.contrib.admin import SimpleListFilter

class ChapterFilter(SimpleListFilter):
   title = 'chapter' 
   parameter_name = 'chapter'

   def lookups(self, request, model_admin):
       chapters = set([c.book for c in model_admin.model.objects.all()])
       return [(b.id, b.name) for b in chapters]

   def queryset(self, request, queryset):
       if self.value():
           return queryset.filter(book__id__exact=self.value())

class BookAdmin(ModelAdmin):
    list_filter = (('book',admin.RelatedOnlyFieldListFilter), (ChapterFilter))

Answer 2

我不确定这是否是最好的方法，但是在这里我使用管理面板中的网址的GET参数来获取图书的ID然后我可以选择相应的章节。它有效！

class ChapterFilter(admin.SimpleListFilter):
    title = 'chapter' 
    parameter_name = 'chapter'
    def lookups(self, request, model_admin):
        if 'book__id__exact' in request.GET:
            id = request.GET['book__id__exact']
            chapters = set([c.chapter for c in model_admin.model.objects.all().filter(book=id)])
        else:
            chapters = set([c.chapter for c in model_admin.model.objects.all()])
        return [(b.id, b.titre) for b in chapters]

    def queryset(self, request, queryset):
        if self.value():
            return queryset.filter(chapter__id__exact=self.value())

class ExerciseAdmin(admin.ModelAdmin):
   list_filter = (('book',admin.RelatedOnlyFieldListFilter), (ChapterFilter))

Django管理员根据其他过滤器显示过滤器

2 个答案: