ActiveRecord Associations HasOneThroughAssociation class HasOneThroughAssociation Ruby on Rails 3.0.20 Since v2.2.3 Last seen in v3.0.20 Available in: v2.2.3 v2.3.18 v3.0.20 Compare with: … v2.2.3 v2.3.18 No documentation comment. Inherits from ActiveRecord::Associations::HasOneAssociation Includes ActiveRecord::Associations::ThroughAssociationScope Methods (defined here) # replace Private methods (1) Implementation detail — not part of the public API. # find_target Methods (inherited) From ActiveRecord::Associations::ThroughAssociationScope (13) # build_conditions # build_sti_condition # build_through_conditions # conditions # construct_conditions # construct_from # construct_join_attributes # construct_joins # construct_owner_attributes # construct_quoted_owner_attributes # construct_scope # construct_select # sql_conditions