# frozen_string_literal: true module Grape module Validations module Validators class Base attr_reader :attrs # Creates a new Validator from options specified # by a +requires+ or +optional+ directive during # parameter definition. # @param attrs [Array] names of attributes to which the Validator applies # @param options [Object] implementation-dependent Validator options # @param required [Boolean] attribute(s) are required or optional # @param scope [ParamsScope] parent scope for this Validator # @param opts [Array] additional validation options def initialize(attrs, options, required, scope, *opts) @attrs = Array(attrs) @option = options @required = required @scope = scope opts = opts.any? ? opts.shift : {} @fail_fast = opts.fetch(:fail_fast, false) @allow_blank = opts.fetch(:allow_blank, false) end # Validates a given request. # @note Override #validate! unless you need to access the entire request. # @param request [Grape::Request] the request currently being handled # @raise [Grape::Exceptions::Validation] if validation failed # @return [void] def validate(request) return unless @scope.should_validate?(request.params) validate!(request.params) end # Validates a given parameter hash. # @note Override #validate if you need to access the entire request. # @param params [Hash] parameters to validate # @raise [Grape::Exceptions::Validation] if validation failed # @return [void] def validate!(params) attributes = SingleAttributeIterator.new(self, @scope, params) # we collect errors inside array because # there may be more than one error per field array_errors = [] attributes.each do |val, attr_name, empty_val| next if !@scope.required? && empty_val next unless @scope.meets_dependency?(val, params) validate_param!(attr_name, val) if @required || (val.respond_to?(:key?) && val.key?(attr_name)) rescue Grape::Exceptions::Validation => e array_errors << e end raise Grape::Exceptions::ValidationArrayErrors.new(array_errors) if array_errors.any? end def self.inherited(klass) return if klass.name.blank? short_validator_name = klass.name.demodulize.underscore.delete_suffix('_validator') Validations.register_validator(short_validator_name, klass) end def message(default_key = nil) options = instance_variable_get(:@option) options_key?(:message) ? options[:message] : default_key end def options_key?(key, options = nil) options = instance_variable_get(:@option) if options.nil? options.respond_to?(:key?) && options.key?(key) && !options[key].nil? end def fail_fast? @fail_fast end end end end end Grape::Validations::Base = Class.new(Grape::Validations::Validators::Base) do def self.inherited(*) ActiveSupport::Deprecation.warn 'Grape::Validations::Base is deprecated! Use Grape::Validations::Validators::Base instead.' super end end