Forum: Ruby on Rails Problem with many to many relationship

Hi

I'm trying to create a many to many relationship between two models.

A User can be associated with many Incidents and vice versa.

class User < ActiveRecord::Base
  include ActiveModel::ForbiddenAttributesProtection

  has_many :incident_participants, foreign_key: "participant_id"
  has_many :participated_incidents, through: :incident_participants

end


class Incident < ActiveRecord::Base
  include ActiveModel::ForbiddenAttributesProtection

  has_many :incident_participants, foreign_key: 
"participated_incident_id"
  has_many :participants, through: :incident_participants

end


The join table:

class IncidentParticipant < ActiveRecord::Base
  include ActiveModel::ForbiddenAttributesProtection

  t.belongs_to :participant, class_name: "User"
  t.belongs_to :participated_incident, class_name: "Incident"
end

Table for IncidentParticipants
  create_table "incident_participants", :force => true do |t|
    t.integer  "participant_id"
    t.integer  "participated_incident_id"
    t.datetime "created_at",               :null => false
    t.datetime "updated_at",               :null => false
  end


So, why doesn't rails get this relationship? When I try to do
@incident.participants in my view I get this error:
"Could not find the source association(s) :participant or :participants 
in
model IncidentParticipant. Try 'has_many :participants, :through =>
:incident_participants, :source => <name>'. Is it one of ?"


Any ideas?

Found the error... I have written t.belongs in one class instead of
belongs_to.... Tired...



Den fredagen den 8:e februari 2013 kl. 15:28:16 UTC+1 skrev Linus
Pettersson: