search for: metal_id

...;Metals" and "Percentages" I want to implement this using a join model, not using a has_and_belongs_to_many relationship. (If i''m wrong about that, let me know). Basically, i have the following tables: Metals id name Alloys id name Percentages alloy_id metal_id percent And the following code in my models: Alloy has_many :metals, :through => :percentages has_many :percentages, :dependent => true Metal has_many :alloys, :through => :percentages has_many :percentages, :dependent => true Percentage belongs_to :alloy belongs_to :...