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Created October 29, 2016 18:57
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helper.rb
def total_weight(quiz)
weight = 0
quiz.questions.each do |question|
weight += question.weight if question.present?
end
weight
end
@patricknpinto
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If you are working with ActiveRecord you can do quiz.questions.sum(:weight)
If not you can use the reduce method (https://ruby-doc.org/core-2.3.1/Enumerable.html#method-i-reduce):

def total_weight(quiz)
  questions = quiz.questions.compact # remove nil questions
  questions.reduce(0) { |sum, question| sum + question.weight }
end

@jlm
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jlm commented Oct 31, 2016

Thanks for this interesting answer!

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