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Versions: 23
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Contents
# frozen_string_literal: true
require "active_support/core_ext/array/extract"
module ActiveRecord
class PredicateBuilder
class ArrayHandler # :nodoc:
def initialize(predicate_builder)
@predicate_builder = predicate_builder
end
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
private
attr_reader :predicate_builder
module NullPredicate # :nodoc:
def self.or(other)
other
end
end
end
end
end
Version data entries
23 entries across 23 versions & 2 rubygems