我想在视图中显示哪个rateable_id拥有最多的stars.count为“dimension：foundation”？
这是我的表费率：
- !ruby/object:Rate
attributes:
id: 11
rater_id: 1
rateable_id: 3
rateable_type: Bboy
stars: 5.0
dimension: foundation
created_at: 2014-02-25 09:33:23.000000000 Z
updated_at: 2014-02-25 09:33:23.000000000 Z
- !ruby/object:Rate
attributes:
id: 12
rater_id: 1
rateable_id: 3
rateable_type: Bboy
stars: 5.0
dimension: originality
created_at: 2014-02-25 09:33:24.000000000 Z
updated_at: 2014-02-25 09:33:24.000000000 Z
- !ruby/object:Rate
attributes:
id: 13
rater_id: 1
rateable_id: 3
rateable_type: Bboy
stars: 5.0
dimension: dynamics
created_at: 2014-02-25 09:33:25.000000000 Z
updated_at: 2014-02-25 09:33:25.000000000 Z
- !ruby/object:Rate
attributes:
id: 14
rater_id: 1
rateable_id: 3
rateable_type: Bboy
stars: 5.0
dimension: execution
created_at: 2014-02-25 09:33:26.000000000 Z
updated_at: 2014-02-25 09:33:26.000000000 Z
- !ruby/object:Rate
attributes:
id: 15
rater_id: 1
rateable_id: 3
rateable_type: Bboy
stars: 5.0
dimension: battle
created_at: 2014-02-25 09:33:27.000000000 Z
updated_at: 2014-02-25 09:33:27.000000000 Z
- !ruby/object:Rate
attributes:
id: 16
rater_id: 1
rateable_id: 5
rateable_type: Bboy
stars: 5.0
dimension: foundation
created_at: 2014-02-25 09:36:30.000000000 Z
updated_at: 2014-02-25 09:36:30.000000000 Z
- !ruby/object:Rate
attributes:
id: 17
rater_id: 1
rateable_id: 5
rateable_type: Bboy
stars: 5.0
dimension: originality
created_at: 2014-02-25 09:36:31.000000000 Z
updated_at: 2014-02-25 09:36:31.000000000 Z
- !ruby/object:Rate
attributes:
id: 18
rater_id: 1
rateable_id: 5
rateable_type: Bboy
stars: 5.0
dimension: dynamics
created_at: 2014-02-25 09:36:31.000000000 Z
updated_at: 2014-02-25 09:36:31.000000000 Z
- !ruby/object:Rate
attributes:
id: 19
rater_id: 1
rateable_id: 5
rateable_type: Bboy
stars: 5.0
dimension: battle
created_at: 2014-02-25 09:36:32.000000000 Z
updated_at: 2014-02-25 09:36:32.000000000 Z
- !ruby/object:Rate
attributes:
id: 25
rater_id: 8
rateable_id: 3
rateable_type: Bboy
stars: 1.0
dimension: foundation
created_at: 2014-03-04 14:06:46.000000000 Z
updated_at: 2014-03-04 14:06:46.000000000 Z
- !ruby/object:Rate
attributes:
id: 26
rater_id: 8
rateable_id: 3
rateable_type: Bboy
stars: 1.0
dimension: originality
created_at: 2014-03-04 14:06:49.000000000 Z
updated_at: 2014-03-04 14:06:49.000000000 Z
- !ruby/object:Rate
attributes:
id: 27
rater_id: 8
rateable_id: 3
rateable_type: Bboy
stars: 1.0
dimension: dynamics
created_at: 2014-03-04 14:06:51.000000000 Z
updated_at: 2014-03-04 14:06:51.000000000 Z
- !ruby/object:Rate
attributes:
id: 28
rater_id: 8
rateable_id: 3
rateable_type: Bboy
stars: 1.0
dimension: execution
created_at: 2014-03-04 14:06:53.000000000 Z
updated_at: 2014-03-04 14:06:53.000000000 Z
- !ruby/object:Rate
attributes:
id: 29
rater_id: 8
rateable_id: 3
rateable_type: Bboy
stars: 1.0
dimension: battle
created_at: 2014-03-04 14:06:54.000000000 Z
updated_at: 2014-03-04 14:06:54.000000000 Z
这是我的tabke bboys：
- !ruby/object:Bboy
attributes:
id: 3
name: taisuke
crew: japan
country: JAP
created_at: 2014-02-25 09:32:56.000000000 Z
updated_at: 2014-02-25 09:32:56.000000000 Z
avatar_file_name: justdoit.jpeg
avatar_content_type: image/jpeg
avatar_file_size: 9297
avatar_updated_at: 2014-02-25 09:32:55.000000000 Z
- !ruby/object:Bboy
attributes:
id: 4
name: roxrite
crew: us
country: us
created_at: 2014-02-25 09:35:40.000000000 Z
updated_at: 2014-02-25 09:35:40.000000000 Z
avatar_file_name:
avatar_content_type:
avatar_file_size:
avatar_updated_at:
- !ruby/object:Bboy
attributes:
id: 5
name: me
crew: japan
country: JAP
created_at: 2014-02-25 09:36:23.000000000 Z
updated_at: 2014-02-25 09:36:23.000000000 Z
avatar_file_name: justdoit.png
avatar_content_type: image/png
感谢您的时间和专业知识！你正在帮助我1000！
答案 0 :(得分：1)
这个两步解决方案可能有效：
most_starred_id = Rate.where(dimension: 'foundation').select("rateable_id, sum('stars') as total_stars").group(:rateable_id).order(:total_stars => :desc).first.rateable_id
most_starred = Bboy.find(most_starred).name