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# frozen_string_literal: true
require_relative 'dry_type_coercer'
module Grape
module Validations
module Types
# Coerces elements in an array. It might be an array of strings or integers or
# an array of arrays of integers.
#
# It could've been possible to use an +of+
# method (https://dry-rb.org/gems/dry-types/1.2/array-with-member/)
# provided by dry-types. Unfortunately, it doesn't work for Grape because of
# behavior of Virtus which was used earlier, a `Grape::Validations::Types::PrimitiveCoercer`
# maintains Virtus behavior in coercing.
class ArrayCoercer < DryTypeCoercer
register_collection Array
def initialize(type, strict = false)
super
@coercer = scope::Array
@subtype = type.first
end
def call(_val)
collection = super
return collection if collection.is_a?(InvalidValue)
coerce_elements collection
end
protected
attr_reader :subtype
def coerce_elements(collection)
return if collection.nil?
collection.each_with_index do |elem, index|
return InvalidValue.new if reject?(elem)
coerced_elem = elem_coercer.call(elem)
return coerced_elem if coerced_elem.is_a?(InvalidValue)
collection[index] = coerced_elem
end
collection
end
# This method maintains logic which was defined by Virtus for arrays.
# Virtus doesn't allow nil in arrays.
def reject?(val)
val.nil?
end
def elem_coercer
@elem_coercer ||= DryTypeCoercer.coercer_instance_for(subtype, strict)
end
end
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems