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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

...d my scope trickery doesn''t make it any better. Now, let''s assume for a moment that participants was a plain has_many association. Then it would be possible to write things like m.participants.clear m.participants << Person.find_by_name(''Steve McKing'') m.participant_ids = params[:movie][:participants] With the given has_many :through, none of these work, as Role object won''t validate without a role type. Anyway, what I would like to write is m.participants.as(''actor'').clear m.participants.as(''actor'') << Person...

Sorry if this is the wrong ml for this question, I am new to R. I am trying to use R to analyze the data from my thesis experiment and I am having troubles accounting for the pseudoreplication properly from having each participant repeat each treatment combination (combination of fixed factors) 5 times. The design of the experiment is as follows... Responses: CompletionTIme VisitedTargets