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# frozen_string_literal: true
module Grape
module Validations
class ValuesValidator < Base
def initialize(attrs, options, required, scope, opts = {})
if options.is_a?(Hash)
@excepts = options[:except]
@values = options[:value]
@proc = options[:proc]
warn '[DEPRECATION] The values validator except option is deprecated. ' \
'Use the except validator instead.' if @excepts
raise ArgumentError, 'proc must be a Proc' if @proc && !@proc.is_a?(Proc)
warn '[DEPRECATION] The values validator proc option is deprecated. ' \
'The lambda expression can now be assigned directly to values.' if @proc
else
@excepts = nil
@values = nil
@proc = nil
@values = options
end
super
end
def validate_param!(attr_name, params)
return unless params.is_a?(Hash)
val = params[attr_name]
return if val.nil? && !required_for_root_scope?
# don't forget that +false.blank?+ is true
return if val != false && val.blank? && @allow_blank
param_array = val.nil? ? [nil] : Array.wrap(val)
raise validation_exception(attr_name, except_message) \
unless check_excepts(param_array)
raise validation_exception(attr_name, message(:values)) \
unless check_values(param_array, attr_name)
raise validation_exception(attr_name, message(:values)) \
if @proc && !param_array.all? { |param| @proc.call(param) }
end
private
def check_values(param_array, attr_name)
values = @values.is_a?(Proc) && @values.arity.zero? ? @values.call : @values
return true if values.nil?
begin
return param_array.all? { |param| values.call(param) } if values.is_a? Proc
rescue StandardError => e
warn "Error '#{e}' raised while validating attribute '#{attr_name}'"
return false
end
param_array.all? { |param| values.include?(param) }
end
def check_excepts(param_array)
excepts = @excepts.is_a?(Proc) ? @excepts.call : @excepts
return true if excepts.nil?
param_array.none? { |param| excepts.include?(param) }
end
def except_message
options = instance_variable_get(:@option)
options_key?(:except_message) ? options[:except_message] : message(:except_values)
end
def required_for_root_scope?
@required && @scope.root?
end
def validation_exception(attr_name, message)
Grape::Exceptions::Validation.new(params: [@scope.full_name(attr_name)], message: message)
end
end
end
end
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