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17 lines
415 B
17 lines
415 B
class Array
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def average
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self.sum.to_f / self.size
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end
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end
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class SurveyResponseAggregator
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def self.score(academic_year:, school:, measure:)
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SurveyItemResponse
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.where(academic_year: academic_year)
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.where(school: school)
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.filter { |survey_response| survey_response.survey_item.measure == measure }
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.map { |survey_response| survey_response.likert_score }
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.average
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end
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end
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