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average those groupings and the way up the framework. Likert scores for a survey_item are averaged. Then all the survey_items in a scale are averaged. Then student scales in a measure are averaged. And teacher scales in a measure are averaged. Then the average of those two calculations becomes the score for a measure. Then the measures in a subcategory are averaged.
21 lines
542 B
Ruby
21 lines
542 B
Ruby
class SurveyItem < ActiveRecord::Base
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belongs_to :scale
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has_one :measure, through: :scale
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has_many :survey_item_responses
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def score(school:, academic_year:)
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@score ||= Hash.new do |memo|
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memo[[school, academic_year]] = survey_item_responses.where(school:, academic_year:).average(:likert_score).to_f
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end
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@score[[school, academic_year]]
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end
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scope :student_survey_items, lambda {
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where("survey_item_id LIKE 's-%'")
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}
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scope :teacher_survey_items, lambda {
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where("survey_item_id LIKE 't-%'")
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}
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end
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