127 lines
2.7 KiB
Ruby
127 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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require "dry/validation"
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require "delegate"
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require "zeitwerk"
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module Hanami
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# @since 0.1.0
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module Validations
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# @since 2.0.0
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# @api private
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def self.gem_loader
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@gem_loader ||= Zeitwerk::Loader.new.tap do |loader|
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root = File.expand_path("..", __dir__)
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loader.tag = "hanami-validations"
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loader.inflector = Zeitwerk::GemInflector.new("#{root}/hanami-validations.rb")
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loader.push_dir(root)
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loader.ignore(
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"#{root}/hanami-validations.rb",
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"#{root}/hanami/validations/version.rb"
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)
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end
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end
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gem_loader.setup
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require_relative "validations/version"
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class Error < StandardError; end
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def self.included(klass)
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super
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klass.extend(ClassMethods)
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end
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# @since 2.0.0
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# @api private
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class Result < SimpleDelegator
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# @since 2.0.0
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# @api private
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def output
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__getobj__.to_h
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end
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# @since 2.0.0
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# @api private
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def messages
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__getobj__.errors.to_h
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end
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end
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# Validations DSL
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#
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# @since 0.1.0
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module ClassMethods
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# Define validation rules from the given block.
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#
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# @param blk [Proc] validation rules
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#
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# @since 0.6.0
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#
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# @see https://guides.hanamirb.org/validations/overview
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#
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# @example Basic Example
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# require "hanami/validations"
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#
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# class Signup
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# include Hanami::Validations
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#
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# validations do
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# required(:name).filled(:string)
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# end
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# end
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#
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# result = Signup.new(name: "Luca").validate
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#
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# result.success? # => true
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# result.messages # => []
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# result.output # => {:name=>""}
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#
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# result = Signup.new(name: "").validate
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#
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# result.success? # => false
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# result.messages # => {:name=>["must be filled"]}
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# result.output # => {:name=>""}
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def validations(&blk)
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@_validator = Dry::Validation::Contract.build { schema(&blk) }
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end
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# @since 2.0.0
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# @api private
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def _validator
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@_validator
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end
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end
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# Initialize a new instance of a validator
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#
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# @param input [#to_h] a set of input data
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#
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# @since 0.6.0
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def initialize(input)
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@input = input
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end
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# Validates the object.
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#
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# @return [Hanami::Validations::Result]
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#
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# @since 0.2.4
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def validate
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Result.new(
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self.class._validator.call(@input)
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)
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end
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# Returns a Hash with the defined attributes as symbolized keys, and their
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# relative values.
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#
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# @return [Hash]
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#
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# @since 0.1.0
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def to_h
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validate.to_h
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end
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end
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end
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