Activerecord 搜查并充当问题的标记人_Activerecord_Arel_Acts As Taggable On_Has And Belongs To Many_Ransack

Activerecord 搜查并充当问题的标记人

activerecord

Activerecord 搜查并充当问题的标记人,activerecord,arel,acts-as-taggable-on,has-and-belongs-to-many,ransack,Activerecord,Arel,Acts As Taggable On,Has And Belongs To Many,Ransack,我有一个模型，有几个分类法，使用acts作为标记 class Film < ActiveRecord::Base attr_accessible :mood_list, :genre_list, :tag_list, :country_list acts_as_taggable_on :countries, :genres, :moods, :tags end 它什么也不返回！！！但我肯定有一个： >> f.countries [#<ActsAsTaggable

我有一个模型，有几个分类法，使用acts作为标记

class Film < ActiveRecord::Base
  attr_accessible :mood_list, :genre_list, :tag_list, :country_list
  acts_as_taggable_on :countries, :genres, :moods, :tags
end

它什么也不返回！！！但我肯定有一个：

>> f.countries
[#<ActsAsTaggableOn::Tag id: 13, name: "USA">]
>> f.moods
[#<ActsAsTaggableOn::Tag id: 17, name: "active">, #<ActsAsTaggableOn::Tag id: 16, name: "psyched">, #<ActsAsTaggableOn::Tag id: 15, name: "happy">]
The SQL generated is:
(3.2ms)  SELECT COUNT(DISTINCT "films"."id") FROM "films" LEFT OUTER JOIN "taggings" ON "taggings"."taggable_id" = "films"."id" AND taggings.context = ('moods') AND "taggings"."taggable_type" = 'Film' LEFT OUTER JOIN "tags" ON "tags"."id" = "taggings"."tag_id" LEFT OUTER JOIN "taggings" "country_taggings_films_join" ON "country_taggings_films_join"."taggable_id" = "films"."id" AND taggings.context = ('countries') AND "country_taggings_films_join"."taggable_type" = 'Film' LEFT OUTER JOIN "tags" "countries_films" ON "countries_films"."id" = "country_taggings_films_join"."tag_id" WHERE (("tags"."name" IN ('happy', 'snooze') AND "countries_films"."name" = 'USA'))

>f.国家/地区
[#

更新
这似乎是一个无法解决的问题，您可以通过关联添加它，例如：

类Person

它对我有用
我认为这是更好的方法
>> f.countries
[#<ActsAsTaggableOn::Tag id: 13, name: "USA">]
>> f.moods
[#<ActsAsTaggableOn::Tag id: 17, name: "active">, #<ActsAsTaggableOn::Tag id: 16, name: "psyched">, #<ActsAsTaggableOn::Tag id: 15, name: "happy">]
The SQL generated is:
(3.2ms)  SELECT COUNT(DISTINCT "films"."id") FROM "films" LEFT OUTER JOIN "taggings" ON "taggings"."taggable_id" = "films"."id" AND taggings.context = ('moods') AND "taggings"."taggable_type" = 'Film' LEFT OUTER JOIN "tags" ON "tags"."id" = "taggings"."tag_id" LEFT OUTER JOIN "taggings" "country_taggings_films_join" ON "country_taggings_films_join"."taggable_id" = "films"."id" AND taggings.context = ('countries') AND "country_taggings_films_join"."taggable_type" = 'Film' LEFT OUTER JOIN "tags" "countries_films" ON "countries_films"."id" = "country_taggings_films_join"."tag_id" WHERE (("tags"."name" IN ('happy', 'snooze') AND "countries_films"."name" = 'USA'))