ruby on rails 3 - Create an association between one model that has two foreign_keys to another model -


struggling association, have 2 models: figure , market, market can trade toy figure else.

figure class   figure_id:integer   name     :string   image_url:string  market class   market_id:integer   figure_you_want_to_trade_id         :integer #this should associated figure_id   figure_you_want_from_someone_else_id:integer #this should associated figure_id

how go making association?

i'm thinking:

market.rb   has_many :figure_to_trade, :class_name => figure, :foreign_key => figure_id   has_many :figure_you_want, :class_name => figure, :foreign_key => figure_id  figure.rb   belongs_to :figure_you_want_to_trade, :class_name => market   belongs_to :figure_you_want_from_someone_else, :class_name => market

this error i'm receiving when try output this: <%= market.figure_to_trade %>

sqlite3::sqlexception: no such column: figures.figure_id: select "figures".* "figures" "figures"."figure_id" = 1

figured out

market.rb     belongs_to :figure_you_want_to_trade, :class_name => figure     belongs_to :figure_you_want_from_someone_else, :class_name => figure  figure.rb     has_many :figure_to_trade, :class_name => market, :foreign_key => :figure_you_want_to_trade_id     has_many :figure_you_want, :class_name => market, :foreign_key => :figure_you_want_from_someone_else_id

then can call (assuming figure class has name:string)

<% @markets.each |market| %>   <%= market.figure_you_want_to_trade.name %>   <%= market.figure_you_want_from_someone_else.name %> <% end %>

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