我有3个模型与has_many通过关联:
class Spot < ActiveRecord::Base
has_many :seasons
has_many :sports, through: :seasons
accepts_nested_attributes_for :sports, :seasons
end
class Sport < ActiveRecord::Base
has_many :seasons
has_many :spots, through: :seasons
end
class Season < ActiveRecord::Base
belongs_to :spot
belongs_to :sport
end
我想创建一个表单,以便编辑Spot,您可以创建/编辑特定运动的季节。
我以这种方式工作:
= form_for([@country, @spot], :html => { :multipart => true }) do |f|
#some Rails code here
= f.fields_for :seasons do |builder|
= builder.select :sport_id, options_from_collection_for_select(Sport.all, :id, :name, :sport_id)
= builder.text_field :months
= builder.hidden_field :spot_id
然而,并没有将任何运动标记为&#34;选择&#34;。我不知道取代什么&#34;:sport_id&#34;在选项中。
我没有使用Rails表单助手让它正常工作,但似乎可以通过帮助程序完成:
- @spot.seasons.each do |season|
= select_tag "spot[seasons_attributes][][sport_id]", options_from_collection_for_select(Sport.all, :id, :name, season.sport.id)
= hidden_field_tag 'spot[seasons_attributes][][id]', season.id
= text_field_tag 'spot[seasons_attributes][][months]', season.months
提前致谢, 瓦迪姆
答案 0 :(得分:0)
在表单构建器上使用collection_select
帮助程序。
builder.collection_select(:sport_id, Sport.all, :id, :name)