search for: participant_id

Displaying 3 results from an estimated 3 matches for "participant_id".

2013 Feb 08
1
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: :inci...
2009 May 12
4
has_many :through and scopes: how to mutate the set of associated objects?
...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'') << Perso...
2009 Apr 01
1
Help with mixed-effects model with temporal pseudoreplication!
...atly appreciated!!!! Here is the code I am using in R: library(nlme) datafile="http://people.rit.edu/rmh3093/mot.csv" master1 = read.table(datafile,header=T) Block=factor(master1$Block) BlockOrder=factor(master1$Block_Order) Replicate=factor(master1$Replicate) Participant=factor(master1$Participant_ID) Targets=factor(master1$Targets) Entropy=factor(master1$Entropy) CompletionTime=master1$Completion_Time summary(lme(log(CompletionTime)~(Entropy*Targets),random=~1|Participant,method="ML")) Thanks in advance! -Ryan