migration/couch/migrate_subject_short_code_in_submission_values/views/map_form_code_entity_question_code_mapping.coffee
(doc)->
if doc.document_type == 'FormModel' && !doc.void && !doc.is_registration_model
entity_field = (field for field in doc.json_fields when field["entity_question_flag"] == true)[0]
emit([doc.form_code, entity_field.code])