Question

I am using Rails 3 beta 4.

I have the following models:

class Player < ActiveRecord::Base
has_many :players_items, :dependent => :destroy 
has_many  :items, :through => :players_items
end

class PlayersItem < ActiveRecord::Base
  belongs_to :player 
  belongs_to :item  
end

class Item < ActiveRecord::Base
  has_many :players_items, :dependent => :destroy
  has_many :players, :through =>  :players_items
end

In the players_controller

def items
    @player = Player.find(params[:id])
    @player_items = @player.items
  end

I have the following attributes

--Items Model--
Item_id:Integer
Name:String
Cost:Integer
Description:Text

--PlayersItem Model--
Item_id:Integer
Player_id:Integer
Total:Integer
Traded:Integer

I am trying to print out all the items associated with a player and for each item print out the “Name”, “Cost”, “Description”, “Total”, and “Traded” values.

When I call @player_items in the items.html.erb, I can only access the attributes associated with the Item Model and not any of the attributes associated with PlayersItem model.

I am trying to access the attributes from both the items model and players_items model in the same “call” similar to SQL Join Statement like this

SELECT * FROM players_items INNER JOIN items ON players_items.item_id=items.id  
WHERE players_items.player_id = "@player"

Is this possible?

Answer 1

Used in the controller

@player = Player.find(params[:id], :include => [:items,:players_items])

And in the view

@player.players_items.each do |player| 
puts "#{player.name}: #{player.player.item.description} cost:#{player.item.cost}"
end