module ActiveRecord::FindDuplicates::ClassMethods
Public Instance Methods
find_duplicates(on:, min: 2)
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Examples:
User.find_duplicates(on: :email).group_by(&:email) User.where('email is not null').find_duplicates(on: :email)
# File lib/activerecord/find_duplicates.rb, line 10 def find_duplicates(on:, min: 2) attr_name = on values = group(attr_name).having( # If I could figure out how to do "count(*)".gteq(min) with Arel, then it would work with sqlite arel_table[Arel.star].count.gteq(min) ).count.keys where(attr_name => values) end