在管理中通过'至'显示m2m字段 [英] Display m2m field defined via 'through' in admin

问题描述

我有以下模型类：

class Category(models.Model):
    category = models.CharField('category', max_length=200, blank=False)

class Book(models.Model):
    title = models.CharField('title', max_length=200, blank=False)
    categories = models.ManyToManyField(Category, blank=False, through='Book_Category')

class Book_Category(models.Model):
    book = models.ForeignKey(Book)
    category = models.ForeignKey(Category)

管理界面我也想添加一个新的类别和book_category关系。

When adding a new book object in admin interface I would like to also add a new category, and book_category relationship.

如果我将BookAdmin中的类别包含为

If I include categories in BookAdmin as

class BookAdmin(admin.ModelAdmin):
    fieldsets = [
        (None, {'fields': ['categories', ]}), ...

我得到不能包含ManyToManyField字段'类因为'类别'手动指定'通过'模型错误。

有没有办法实现所需的功能？

Is there any way to achieve required functionality?

推荐答案

class CategoryInline(admin.TabularInline):
    model = Book_Category
    extra = 3 # choose any number

class BookAdmin(admin.ModelAdmin):
    inlines = (CategoryInline,)

admin.site.register(Book, BookAdmin)

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