Module: StudySubjectAbstracts

Included in:
StudySubject
Defined in:
app/models/study_subject_abstracts.rb

Overview

Simply extracted some code to clean up model. I’d like to do this to all of the really big classes but let’s see how this goes first.

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'app/models/study_subject_abstracts.rb', line 7

def self.included(base)
# Must delay the calls to these ActiveRecord methods
# or it will raise many "undefined method"s.
base.class_eval do

# Hmm?  How to do this here?
# class NotTwoAbstracts < StandardError; end

  has_many :abstracts
  has_one :first_abstract, :class_name => 'Abstract',
    :conditions => [
      "entry_1_by_uid IS NOT NULL AND " <<
      "entry_2_by_uid IS NULL AND " <<
      "merged_by_uid  IS NULL" ]
  has_one :second_abstract, :class_name => 'Abstract',
    :conditions => [
      "entry_2_by_uid IS NOT NULL AND " <<
      "merged_by_uid  IS NULL" ]
  has_one :merged_abstract, :class_name => 'Abstract',
    :conditions => [ "merged_by_uid IS NOT NULL" ]
  has_many :unmerged_abstracts, :class_name => 'Abstract',
    :conditions => [ "merged_by_uid IS NULL" ]

  def abstracts_the_same?
    raise StudySubject::NotTwoAbstracts unless abstracts_count == 2
    # abstracts.inject(:is_the_same_as?) was nice
    # but using inject is ruby >= 1.8.7
    return abstracts[0].is_the_same_as?(abstracts[1])
  end

  def abstract_diffs
    raise StudySubject::NotTwoAbstracts unless abstracts_count == 2
    # abstracts.inject(:diff) was nice
    # but using inject is ruby >= 1.8.7
    return abstracts[0].diff(abstracts[1])
  end

end # class_eval
end