Including join model data

rubyonrails-talk
1

I`m using the joing model Part to access Treinando from Evento. This code works well:

   @treinandos = Evento.find(params[:evento_id]).treinandos

But the parts table has some more columns I need to retrieve addtionally. Even after some docs/googling and tests I was not able to append this information to the resulting object @treinandos.

Can you give some hints about how to do it?

Models:

class Treinando < ActiveRecord::Base   has_many :parts   has_many :eventos, :through => :parts end class Part < ActiveRecord::Base   belongs_to :treinando   belongs_to :evento end class Evento < ActiveRecord::Base   has_many :parts   has_many :treinandos, :through => :parts end

2

Well, I found a way, but it is not a optimized (rails way) one, since it executes a find for each "part" record, more some selects.

    parts = Evento.find(params[:evento_id]).parts     @treinandos =     parts.each do |part|       obj = Treinando.find(part.treinando_id)       obj[:padrinho] = part.padrinho.nome if part.padrinho_id       obj[:presenca] = part.presenca       @treinandos << obj     end

If you have any idea about the rails way to do it, please tell me.