method
join_keys
Ruby on Rails latest stable (v7.1.3.2)
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Class: BelongsToReflection
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join_keys(association_klass)
public
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# File activerecord/lib/active_record/reflection.rb, line 670 def join_keys(association_klass) key = polymorphic? ? association_primary_key(association_klass) : association_primary_key JoinKeys.new(key, foreign_key) end