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# frozen_string_literal: true
# Collected responses from one Participant PHQ-9 assessment session.
class PhqAssessment < ActiveRecord::Base
MIN_QUESTION_SCORE = 0
MAX_QUESTION_SCORE = 3
# rubocop:disable Style/MutableConstant
QUESTION_ATTRIBUTES = :q1, :q2, :q3, :q4, :q5, :q6, :q7, :q8, :q9
# rubocop:enable Style/MutableConstant
SUICIDAL_SCORE = 3
belongs_to :participant
validates :participant, :release_date, presence: true
validates :release_date, uniqueness: { scope: :participant_id }
validate :scores_valid
scope :recenty_released, -> { order(release_date: :desc) }
def self.most_recent
recenty_released.first
end
def answered_questions
@answered_questions ||= remove_nils
end
def completed?
number_answered == QUESTION_ATTRIBUTES.count
end
def number_answered
answered_questions.count
end
def score
answered_questions.inject(:+)
end
def suicidal?
q9 == SUICIDAL_SCORE
end
private
def remove_nils
QUESTION_ATTRIBUTES.map { |answer| self[answer] }.compact
end
def scores_valid
return unless number_answered > 0
if answered_questions.min < MIN_QUESTION_SCORE ||
answered_questions.max > MAX_QUESTION_SCORE
errors.add(:base, "scores must be between #{MIN_QUESTION_SCORE} " \
"and #{MAX_QUESTION_SCORE} inclusive")
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems