module Sequel::Plugins::PgArrayAssociations::DatasetMethods

Private Instance Methods

many_to_pg_array_association_filter_expression(op, ref, obj) click to toggle source

Support filtering by many_to_pg_array associations using a subquery.

    # File lib/sequel/plugins/pg_array_associations.rb
520 def many_to_pg_array_association_filter_expression(op, ref, obj)
521   pk = ref.qualify(model.table_name, ref.primary_key)
522   key = ref[:key]
523   expr = case obj
524   when Sequel::Model
525     if (assoc_pks = obj.get_column_value(key)) && !assoc_pks.empty?
526       Sequel[pk=>assoc_pks.to_a]
527     end
528   when Array
529     if (assoc_pks = obj.map{|o| o.get_column_value(key)}.flatten.compact.uniq) && !assoc_pks.empty?
530       Sequel[pk=>assoc_pks]
531     end
532   when Sequel::Dataset
533     obj.select(ref.qualify(obj.model.table_name, ref[:key_column]).as(:key)).from_self.where{{pk=>any(:key)}}.select(1).exists
534   end
535   expr = Sequel::SQL::Constants::FALSE unless expr
536   expr = add_association_filter_conditions(ref, obj, expr)
537   association_filter_handle_inversion(op, expr, [pk])
538 end
pg_array_to_many_association_filter_expression(op, ref, obj) click to toggle source

Support filtering by pg_array_to_many associations using a subquery.

    # File lib/sequel/plugins/pg_array_associations.rb
541 def pg_array_to_many_association_filter_expression(op, ref, obj)
542   key = ref.qualify(model.table_name, ref[:key_column])
543   expr = case obj
544   when Sequel::Model
545     if pkv = obj.get_column_value(ref.primary_key_method)
546       Sequel.pg_array_op(key).contains(Sequel.pg_array([pkv], ref.array_type))
547     end
548   when Array
549     if (pkvs = obj.map{|o| o.get_column_value(ref.primary_key_method)}.compact) && !pkvs.empty?
550       Sequel.pg_array(key).overlaps(Sequel.pg_array(pkvs, ref.array_type))
551     end
552   when Sequel::Dataset
553     Sequel.function(:coalesce, Sequel.pg_array_op(key).overlaps(obj.select{array_agg(ref.qualify(obj.model.table_name, ref.primary_key))}), Sequel::SQL::Constants::FALSE)
554   end
555   expr = Sequel::SQL::Constants::FALSE unless expr
556   expr = add_association_filter_conditions(ref, obj, expr)
557   association_filter_handle_inversion(op, expr, [key])
558 end