Module: DelegateAttributes::ActiveRecordExtension::ClassMethods

Defined in:
lib/delegate_attributes/models/active_record_extension.rb

Instance Method Summary collapse

Instance Method Details

#delegate_attributes(*args) ⇒ Object 



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# File 'lib/delegate_attributes/models/active_record_extension.rb', line 12

def delegate_attributes(*args)
  options = args.extract_options!
  errors_option = options.delete(:errors)
        writer_option = options.delete(:writer)
        
  writer_regexp = /=\z/
  readers = args.select {|a| a.to_s !=~ writer_regexp}
  writers = args.select {|a| a.to_s =~ writer_regexp}
  if writer_option == true
    writers += readers.map {|a| "#{a}="}
  end

  class_eval do
    delegate *(readers + writers), options.dup
  end          
  
  unless errors_option == false
    class_eval "      validate do\n        object = \#{options[:to]}\n        \#{\"object.instance_variable_set(:@errors, DelegateAttributes::FakeErrors.new(object))\" if errors_option.to_s == \"fit\"}\n        if !object.valid?\n          object.errors.messages.each do |attribute, suberrors|\n            if attribute.to_s.in? %w{\#{readers.join(\" \")}}\n              suberrors.each do |suberror|\n                errors.add(attribute, suberror)\n              end\n            end\n          end\n        end\n      end\n    EOV\n  end\nend\n"