How to register a django model?

Question

Django

Hello, there are 3 models.

class Category(models.Model):
    name = models.CharField(max_length=100)
    slug = models.SlugField(max_length=50, verbose_name=u"url")
    def __unicode__(self):
        return self.name

class Post(models.Model):
    title = models.CharField(max_length=150, null=True, verbose_name=u"Название")
    content = models.TextField(verbose_name=u"Текст")
    category = models.ForeignKey(Category, verbose_name=u"Категория")
    slug = models.SlugField(max_length=50, verbose_name=u"url")

class PostAdmin(admin.ModelAdmin):
    list_display = ("title", "category")
    search_fields = ('title', 'category')

I'm trying to connect the PostAdmin model:
This is how the model is connected, but MarkdownModelAdmin does not work

admin.site.register(MarkdownModelAdmin)
admin.site.register(Post,PostAdmin)
admin.site.register(Category)

And if so, then PostAdmin is not connected

admin.site.register(Post,MarkdownModelAdmin)
admin.site.register(PostAdmin)
admin.site.register(Category)

How to connect all these 4 models correctly?

Answer 1

class PostAdmin(MarkdownModelAdmin):
    # ...

admin.site.register(Post, PostAdmin)