Module: ActiveRecord::Validations::ClassMethods

Defined in:
lib/adaptation/validateable.rb

Instance Method Summary collapse

Instance Method Details

#validates_as_email(*attr_names) ⇒ Object

Validates whether the value of the specified xml attribute/element has a valid email format.

Example:

<contact email="[email protected]">...</contact>

class Contact < Adaptation::Message
  has_one :attribute, :email

  validates_as_email :email
end



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# File 'lib/adaptation/validateable.rb', line 110

def validates_as_email(*attr_names)
  configuration = {
    :message   => 'is an invalid email',
    :with      => RFC822::EmailAddress,
    :allow_nil => true }
  configuration.update(attr_names.pop) if attr_names.last.is_a?(Hash)

  validates_format_of attr_names, configuration
end

#validates_value_of(*attr_names) ⇒ Object

Validates whether the value of the specified xml attribute/element is the expected one.

Example 1:

<leftwing side="left"/>

class Leftwing < Adaptation::Message
  has_one :attribute, :side

  validates_value_of :side, "left"
end

Example 2:

<bird><wings><wing side="left"/><wing side="right"/></wings></bird>

class Bird < Adaptation::Message
  has_many :wings

  validates_value_of :side, "left", :in => :wings
end



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# File 'lib/adaptation/validateable.rb', line 73

def validates_value_of(*attr_names)
  configuration = {
    :message => 'value doesn\'t exist' 
  }
  configuration.update(attr_names.pop) if attr_names.last.is_a?(Hash)

  if configuration[:in].nil?
    validates_each(attr_names, configuration) do |record, attr_name, value|
      if (attr_names[1].to_s != record.send(attr_names[0].to_sym))
        record.errors.add(attr_name, configuration[:message])
      end
    end
  else
    validates_each(attr_names, configuration) do |record, attr_name, value|
      found = false
      record.send(configuration[:in]).each do |s|
        if (attr_names[1].to_s == s.send(attr_names[0].to_sym))
          found = true
          break
        end
      end
      record.errors.add(attr_name, configuration[:message]) unless found
    end
  end
end