diff options
Diffstat (limited to 'activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb')
-rw-r--r-- | activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb b/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb new file mode 100644 index 0000000000..7029ae5f47 --- /dev/null +++ b/activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb @@ -0,0 +1,52 @@ +module ActiveRecord + class PredicateBuilder + class PolymorphicArrayValue # :nodoc: + def initialize(associated_table, values) + @associated_table = associated_table + @values = values + end + + def queries + type_to_ids_mapping.map do |type, ids| + { + associated_table.association_foreign_type.to_s => type, + associated_table.association_foreign_key.to_s => ids.size > 1 ? ids : ids.first + } + end + end + + # TODO Change this to private once we've dropped Ruby 2.2 support. + # Workaround for Ruby 2.2 "private attribute?" warning. + protected + attr_reader :associated_table, :values + + private + def type_to_ids_mapping + default_hash = Hash.new { |hsh, key| hsh[key] = [] } + values.each_with_object(default_hash) { |value, hash| hash[base_class(value).name] << convert_to_id(value) } + end + + def primary_key(value) + associated_table.association_primary_key(base_class(value)) + end + + def base_class(value) + case value + when Base + value.class.base_class + when Relation + value.klass.base_class + end + end + + def convert_to_id(value) + case value + when Base + value._read_attribute(primary_key(value)) + when Relation + value.select(primary_key(value)) + end + end + end + end +end |