sql - has_many join display issue -

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newbie rails question... know there's better way this. need understanding why isn't working thought should. i'm doing simple join tables using "has_many" relationship pre-existing database. need keep "non-rails" friendly titles.

here's output <%= room.levels %> seen in browser: [#<level name: "01 - first floor">] i'd see 01 - first floor without of other information.

i have 2 tables. :rooms , :levels

here's schema 2 tables:

create_table "levels", :primary_key => "id", :force => true |t| t.integer "typeid" t.integer "designoption" t.string  "name" t.float   "elevation"  create_table "rooms", :primary_key => "id", :force => true |t| t.integer "designoption" t.integer "phaseid" t.string  "comments" t.float   "volume" t.float   "perimeter" t.integer "level" t.string  "occupancy" t.float   "area" t.string  "number" t.string  "name" end   add_index "rooms", ["id"], :name => "id", :unique => true

here's app/model/room.rb:

class room < activerecord::base    attr_accessible :area, :level, :name, :number, :perimeter, :phaseid, :elevation    has_many :levels, :primary_key => 'level', :foreign_key => 'id', :select => 'name' set_primary_key :id end

here's snippet app/views/rooms/index.html.erb:

<% @rooms.each |room| %>   <tr>     <td><%= room.name %></td>     <td><%= room.number %></td>     <td><%= room.phaseid %></td>     <td><%= room.levels %></td>     <td><%= link_to 'show', room %></td>     <td><%= link_to 'edit', edit_room_path(room) %></td>     <td><%= link_to 'destroy', room, method: :delete, data: { confirm: 'are sure?' } %></td>   </tr>

thanks!

you can this:

<td><%= room.levels.map(&:name).join(', ') %></td>

why code didn't work on first place? because room.levels returns array of level objects. need loop through them each name, , display it.

room.levels # => returns level objects associated  room.levels.map(&:name) # => collect each name of level objects (makes array of (string) names)  room.levels.map(&:name).join(', ') # => return nice string levels name ", " between each.

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