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inopinatus/exceeding.rb

Created August 24, 2020 15:07
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AR generalised association join, group, count, and filter
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exceeding.rb
# app/models/concerns/exceeding.rb
module Exceeding
extend ActiveSupport::Concern
included do
scope :exceeds, ->(association, n) do
joins(association).group(primary_key).having(arel_table[primary_key].count.gteq n)
end
end
end
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