class LocalizedTopicInlineAdmin(admin.TabularInline):
    """
    Localized Topic inline
    """
    fieldsets = (
        (
            None,
            {
                'fields': ('content', 'lang',)
            }
        ),
    )

    model = LocalizedTopic
    extra = len(TARGET_LANGUAGES)


class TopicAdmin(admin.ModelAdmin):
    """
    Topic Admin
    """
    fieldsets = (
        (
            None,
            {
                'fields': ('name', 'category',)
            }
        ),
    )

    inlines = (LocalizedTopicInlineAdmin, )


admin.site.register(Topic, TopicAdmin)