Module: PassiveRecord::ArithmeticHelpers
- Included in:
- PassiveRecord::Associations::HasManyRelation, Core::Query
- Defined in:
- lib/passive_record/arithmetic_helpers.rb
Instance Method Summary collapse
Instance Method Details
#average(attr) ⇒ Object
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# File 'lib/passive_record/arithmetic_helpers.rb', line 11 def average(attr) sum(attr) / count end |
#mode(attr) ⇒ Object
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# File 'lib/passive_record/arithmetic_helpers.rb', line 15 def mode(attr) arr = pluck(attr) freq = arr.inject(Hash.new(0)) { |h,v| h[v] += 1; h } arr.max_by { |v| freq[v] } end |
#pluck(attr) ⇒ Object
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# File 'lib/passive_record/arithmetic_helpers.rb', line 3 def pluck(attr) all.map(&attr) end |
#sum(attr) ⇒ Object
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# File 'lib/passive_record/arithmetic_helpers.rb', line 7 def sum(attr) pluck(attr).inject(&:+) end |