Class: Rapidfire::SurveyResults

Inherits:
BaseService show all
Defined in:
app/services/rapidfire/survey_results.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#survey ⇒ Object

Returns the value of attribute survey.



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# File 'app/services/rapidfire/survey_results.rb', line 3

def survey
  @survey
end

Class Method Details

.filter(filter_params, column) ⇒ Object 



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# File 'app/services/rapidfire/survey_results.rb', line 61

def self.filter(filter_params, column)
  self.new.filter(filter_params, column)
end

Instance Method Details

#extract(filter_params = {}) ⇒ Object

extracts question along with results each entry will have the following:

  1. question type and question id

  2. question text

  3. if aggregatable, return each option with value

  4. else return an array of all the answers given



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# File 'app/services/rapidfire/survey_results.rb', line 11

def extract(filter_params = {})
  @survey.questions.collect do |question|
    results =
      case question
      when Rapidfire::Questions::Select, Rapidfire::Questions::Radio,
        Rapidfire::Questions::Checkbox
        answers = question.answers.where(*filter(filter_params)).map(&:answer_text).map do |text|
          text.to_s.split(Rapidfire.answers_delimiter)
        end.flatten

        count_hash = Hash.new(0)
        question.options.map{|o| count_hash[o] = 0 }

        answers.inject(count_hash) { |total, e| total[e] += 1; total }
      when Rapidfire::Questions::Short, Rapidfire::Questions::Date,
        Rapidfire::Questions::Long, Rapidfire::Questions::Numeric
        question.answers.where(*filter(filter_params)).pluck(:answer_text)
      end

    QuestionResult.new(question: question, results: results)
  end
end

#filter(filter_params, column = 'attempt_id') ⇒ Object 



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# File 'app/services/rapidfire/survey_results.rb', line 34

def filter(filter_params, column = 'attempt_id')
  @filter_result ||= begin
    return ["0=0"] unless Array(filter_params[:question_ids]).compact.count == Array(filter_params[:options]).compact.count
    return ["0=0"] unless %w(id attempt_id).include?(column)
    return ["0=0"] if Array(filter_params[:question_ids]).compact.count == 0

    collected_filters = {}
    Array(filter_params[:question_ids]).each_with_index do |question_id, i|
      collected_filters[question_id] ||= []
      collected_filters[question_id] << filter_params[:options][i]
    end

    attempt_ids = nil

    collected_filters.each do |question_id, options|
      these_matches = Answer.where("question_id = ? and answer_text in (?)", question_id, options).pluck(:attempt_id)
      if attempt_ids.nil?
        attempt_ids = these_matches
      else
        attempt_ids = attempt_ids & these_matches
      end
    end

    ["#{column} in (?)", attempt_ids]
  end
end