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
521 def many_to_pg_array_association_filter_expression(op, ref, obj)
522   pk = ref.qualify(model.table_name, ref.primary_key)
523   key = ref[:key]
524   expr = case obj
525   when Sequel::Model
526     if (assoc_pks = obj.get_column_value(key)) && !assoc_pks.empty?
527       Sequel[pk=>assoc_pks.to_a]
528     end
529   when Array
530     if (assoc_pks = obj.map{|o| o.get_column_value(key)}.flatten.compact.uniq) && !assoc_pks.empty?
531       Sequel[pk=>assoc_pks]
532     end
533   when Sequel::Dataset
534     obj.select(ref.qualify(obj.model.table_name, ref[:key_column]).as(:key)).from_self.where{{pk=>any(:key)}}.select(1).exists
535   end
536   expr = Sequel::SQL::Constants::FALSE unless expr
537   expr = add_association_filter_conditions(ref, obj, expr)
538   association_filter_handle_inversion(op, expr, [pk])
539 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
542 def pg_array_to_many_association_filter_expression(op, ref, obj)
543   key = ref.qualify(model.table_name, ref[:key_column])
544   expr = case obj
545   when Sequel::Model
546     if pkv = obj.get_column_value(ref.primary_key_method)
547       Sequel.pg_array_op(key).contains(Sequel.pg_array([pkv], ref.array_type))
548     end
549   when Array
550     if (pkvs = obj.map{|o| o.get_column_value(ref.primary_key_method)}.compact) && !pkvs.empty?
551       Sequel.pg_array(key).overlaps(Sequel.pg_array(pkvs, ref.array_type))
552     end
553   when Sequel::Dataset
554     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)
555   end
556   expr = Sequel::SQL::Constants::FALSE unless expr
557   expr = add_association_filter_conditions(ref, obj, expr)
558   association_filter_handle_inversion(op, expr, [key])
559 end