activerecord - Ransack 和作为可标记问题的行为

Question

我有一个包含多个分类法的模型，使用 act-as-taggable-on

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

我正在尝试让 Ransack 搜索找到具有任何情绪且完全匹配国家/地区的记录。但它返回 0 条记录，而我有一个匹配的记录，请参阅:

Film.search({:moods_name_in=>['happy', 'snooze']}).result.count => 2    
Film.search({:countries_name_eq=>'USA'}).result.count => 2
Film.search({:moods_name_in=>['happy', 'snooze'], :countries_name_eq=>'USA'}).result.count => 0

它什么都不返回!!!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'))

任何帮助请!

更新:2013 年 1 月 11 日
问题应该在于正确应用 ransack 谓词。
有几个相关的问题实际上没有解决。
Rails, Ransack: How to search HABTM relationship for "all" matches instead of "any"

Convert ActiveRecord habtm query to Arel

更新
对于 has_and_belongs_to_many https://github.com/ernie/ransack/issues/164 问题似乎是无法解决的事件

Answer 1

您可以通过关联添加它，例如:
class Person < ActiveRecord::Base
PERSON_SEARCH_OPTIONS = :name_or_email_or_tags_name_cont
end
这个对我有用

我认为这是更好的方法。