Module: Glue::Validation::ClassMethods

Defined in:
lib/og/validation.rb

Instance Method Summary collapse

Instance Method Details

Validate the related object or objects. Works with all relations.



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# File 'lib/og/validation.rb', line 61

def validate_related(*params)
  c = { 
    :msg => Glue::Validation::Errors.invalid_relation, 
    :on => :save 
  }
  c.update(params.pop) if params.last.is_a?(Hash)
  
  for name in params
    code = %{
      unless (obj.#{name}.is_a?(Array) ? obj.#{name} : [obj.#{name}]).inject(true) { |memo, obj| (obj.nil? or obj.valid?) and memo }
        errors.add(:#{name}, '#{c[:msg]}')
      end;
    }

    validations! << [code, c[:on]]
  end
end

#validate_unique(*params) ⇒ Object

Validates that the given field(s) contain unique values. Ensures that if a record is found with a matching value, that it is the same record, allowing updates.

The Og libraries are required for this methdod to work. You can override this method if you want to use another OR mapping library.

Example

validate_unique :param, :msg => ‘Value is already in use’ – TODO: :unique should implicitly generate validate_unique. ++



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# File 'lib/og/validation.rb', line 35

def validate_unique(*params)
  c = {
    :on => :save
  }
  c.update(params.pop) if params.last.is_a?(Hash)

  for name in params do
    c[:msg] ||= "#{self.name} with this #{name} already exists"

    code = %{
      others = obj.class.send(:find_by_#{name}, obj.send(:#{name}))
  
      unless others.empty?
        if (others.size != 1) or (others[0].oid != obj.oid)
          errors.add(:#{name}, '#{c[:msg]}')
        end
      end
    }

    validations! << [code, c[:on]]
  end
end