ensl.org/app/models/prediction.rb

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class Prediction < ActiveRecord::Base
include Extra
attr_protected :id, :created_at, :updated_at, :result
validates_presence_of :match, :user
validates_inclusion_of :score1, :in => 0..4, :message => "Invalid score"
validates_inclusion_of :score2, :in => 0..4, :message => "Invalid score"
validates_uniqueness_of :match_id, :scope => :user_id
scope :with_contest, :include => {:match => :contest}
belongs_to :match
belongs_to :user
def can_create? cuser
cuser and match.match_time.future? and !match.score1 and !match.score2 and !cuser.predictions.exists?(:match_id => match.id)
end
end