Class: ActiveRecord::PredicateBuilder::ArrayHandler
Do not use. This class is for internal use only.
Relationships & Source Files | |
Namespace Children | |
Modules:
| |
Inherits: | Object |
Defined in: | activerecord/lib/active_record/relation/predicate_builder/array_handler.rb |
Class Method Summary
- .new(predicate_builder) ⇒ ArrayHandler constructor
Instance Attribute Summary
- #predicate_builder readonly private
Instance Method Summary
Constructor Details
.new(predicate_builder) ⇒ ArrayHandler
# File 'activerecord/lib/active_record/relation/predicate_builder/array_handler.rb', line 8
def initialize(predicate_builder) @predicate_builder = predicate_builder end
Instance Attribute Details
#predicate_builder (readonly, private)
[ GitHub ]# File 'activerecord/lib/active_record/relation/predicate_builder/array_handler.rb', line 39
attr_reader :predicate_builder
Instance Method Details
#call(attribute, value)
[ GitHub ]# File 'activerecord/lib/active_record/relation/predicate_builder/array_handler.rb', line 12
def call(attribute, value) return attribute.in([]) if value.empty? values = value.map { |x| x.is_a?(Base) ? x.id : x } nils = values.compact! ranges = values.extract! { |v| v.is_a?(Range) } values_predicate = case values.length when 0 then NullPredicate when 1 then predicate_builder.build(attribute, values.first) else Arel::Nodes::HomogeneousIn.new(values, attribute, :in) end if nils values_predicate = values_predicate.or(attribute.eq(nil)) end if ranges.empty? values_predicate else array_predicates = ranges.map! { |range| predicate_builder.build(attribute, range) } array_predicates.inject(values_predicate, &:or) end end