Class: Sequent::Core::Helpers::AssociationValidator

Inherits:
ActiveModel::Validator
  • Object
show all
Defined in:
lib/sequent/core/helpers/association_validator.rb

Overview

Validator for associations. Typically used in Sequent::Core::Command, Sequent::Core::Event and Sequent::Core::ValueObjects.

Example:

class RegisterForTrainingCommand < UpdateCommand
  attrs trainee: Person

  validates_presence_of :trainee
  validates_with Sequent::Core::Helpers::AssociationValidator, associations: [:trainee]

end

Instance Method Summary collapse

Instance Method Details

#validate(record) ⇒ Object 



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# File 'lib/sequent/core/helpers/association_validator.rb', line 20

def validate(record)
  associations = options[:associations]
  associations = [associations] unless associations.instance_of?(Array)
  associations.each do |association|
    next unless association # since ruby 2.0...?
    value = record.instance_variable_get("@#{association.to_s}")
    if value && incorrect_type?(value, record, association)
      record.errors[association] = "is not of type #{record.attributes[association]}"
    elsif value && value.kind_of?(Array)
      item_type = record.class.type_for(association).item_type
      record.errors[association] = "is invalid" if all_valid?(value, item_type)
    else
      record.errors[association] = "is invalid" if value && value.invalid?
    end
  end
end