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# frozen_string_literal: true
module Decidim
module Attributes
# Custom attributes value to represent an Array.
class Array < ActiveModel::Type::Value
attr_reader :value_type, :default
def initialize(value_type: ::Object, default: [])
@value_type = value_type
@default = default
end
def type # :nodoc:
:array
end
# The value would not be cast in case it is nil by default. We also want
# to cast the nil values to the default values.
def cast(value)
cast_value(value)
end
# The nested validator should be only added for those attributes that
# inherit from the AttributeObject::Model type. Otherwise this would be
# also added e.g. for ActiveRecord objects which would cause unexpected
# validation errors.
#
# The hash type inherits from the array type, so this covers both cases.
def validate_nested?
return false unless value_type.is_a?(Class)
(value_type < Decidim::AttributeObject::Model) == true
end
private
def cast_value(value)
value ||= default.dup
if value.is_a?(::Hash)
value = value.values
elsif !value.is_a?(::Array)
value =
if value.respond_to?(:to_a)
value.to_a
else
[value]
end
end
value.map { |v| primitive_value(v, value_type) }
end
def primitive_value(value, type)
return type.cast(value) if type.is_a?(ActiveModel::Type::Value)
Decidim::AttributeObject.type(type).cast(value)
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems