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