我有一个使用acts-as-taggable-on的模型有几个分类法
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。但它会返回 0 条记录,而我有匹配的记录,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!!!但我绝对有一个:
>> 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'))
请有任何帮助!
更新:2013 年 1 月 11 日问题应该在于正确应用洗劫谓词。有几个相关的问题实际上没有解决。 Rails,Ransack:如何在 HABTM 关系中搜索“所有”匹配项而不是“任何”匹配项
将 ActiveRecord habtm 查询转换为 Arel
更新对于 has_and_belongs_to_many https://github.com/ernie/ransack/issues/164来说,这个问题似乎是无法解决的事件