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Contents
require 'active_support/core_ext/string/filters'
module ActiveRecord
class PredicateBuilder
class ArrayHandler # :nodoc:
def call(attribute, value)
values = value.map { |x| x.is_a?(Base) ? x.id : x }
nils, values = values.partition(&:nil?)
if values.any? { |val| val.is_a?(Array) }
ActiveSupport::Deprecation.warn(<<-MSG.squish)
Passing a nested array to Active Record finder methods is
deprecated and will be removed. Flatten your array before using
it for 'IN' conditions.
MSG
flat_values = values.flatten
values = flat_values unless flat_values.include?(nil)
end
return attribute.in([]) if values.empty? && nils.empty?
ranges, values = values.partition { |v| v.is_a?(Range) }
values_predicate =
case values.length
when 0 then NullPredicate
when 1 then attribute.eq(values.first)
else attribute.in(values)
end
unless nils.empty?
values_predicate = values_predicate.or(attribute.eq(nil))
end
array_predicates = ranges.map { |range| attribute.between(range) }
array_predicates.unshift(values_predicate)
array_predicates.inject { |composite, predicate| composite.or(predicate) }
end
module NullPredicate # :nodoc:
def self.or(other)
other
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems