Class: SplitCat::GoalSubject

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/split_cat/goal_subject.rb

Class Method Summary collapse

Class Method Details

.subject_counts(experiment) ⇒ Object

Returns a hash of goal name => hypothesis name => count



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# File 'app/models/split_cat/goal_subject.rb', line 6

def self.subject_counts( experiment )
  counts = HashWithIndifferentAccess.new

  # Run the query

  sql = subject_count_sql( experiment )
  ActiveRecord::Base.connection.execute( sql ).each do |row|
    subject_count_row( counts, row )
  end

  # Translate ID keys to name symbols

  experiment.goals.each do |goal|
    unless hash = counts[ goal.name ] = counts.delete( goal.id )
      counts[ goal.name ] = HashWithIndifferentAccess.new
    else
      experiment.hypotheses.each do |h|
        hash[ h.name ] = hash.delete( h.id )
      end
    end
  end

  return counts
end