Module: Kraftwerk::Endpoint::Validatable

Defined in:
lib/kraftwerk/endpoint/validatable.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.prepended(base) ⇒ Object 



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# File 'lib/kraftwerk/endpoint/validatable.rb', line 23

def self.prepended(base)
  base.class_eval do
    class_attribute :validation_class
    extend ClassMethods
  end
end

Instance Method Details

#call(params) ⇒ Object

Unlike in Hanami, where we usually want to validate params manually and, if they are invalid, take a proper action, in Kraftwerk if validation is not passed, the request should not happen at all. Instead, error messages are returned.



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# File 'lib/kraftwerk/endpoint/validatable.rb', line 10

def call(params)
  validation_class = self.class.validation_class
  return super if validation_class.nil?

  result = validation_class.new.call(params.to_h)
  if result.success?
    # pass only whitelisted parameters down
    super(result.to_h)
  else
    Response.new(code: 400, body: result.errors.to_h)
  end
end