Module: Might::FilterValueValidator

Defined in:
lib/might/filter_value_validator.rb

Overview

Build singleton validation class for specified attribute name

Examples:

you need a nice validator for a first_name

validator_klass = ValueValidator.build('first_name', presence: true, length: { minimum: 3 })
validator = validator_klass.new('Bo')
validator.valid? #=> false
validator.errors.full_messages #=> ['First name is too short (minimum is 3 characters)']

Defined Under Namespace

Classes: DefinedValidator

Class Method Summary collapse

Class Method Details

.build(definition) ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/might/filter_value_validator.rb', line 20

def build(definition)
  Struct.new(definition.as.to_sym) do
    include ActiveModel::Validations

    validates(definition.as, definition.validations) if definition.validations.present?
    validates(definition.as, 'might/filter_value_validator/defined': true)

    define_method(:undefined?) { definition.undefined? }

    define_singleton_method :model_name do
      ActiveModel::Name.new(Might, nil, 'Might')
    end
  end
end