Module: ApigeePlatform::Associations::ClassMethods

Defined in:
lib/apigee-platform/associations.rb

Instance Method Summary collapse

Instance Method Details

#belongs_to(*args) ⇒ Object 



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# File 'lib/apigee-platform/associations.rb', line 51

def belongs_to(*args)
  klass_sym = args.first.to_sym
  options = args.extract_options!
  prefix = "#{self.parent}::"
  klass_name = prefix + klass_sym.to_s.classify
  klass_name = prefix + options[:class_name] if options[:class_name]

  instance_eval do
    define_method "#{klass_sym}" do
      klass = klass_name.constantize
      id_key = options[:key] ? options[:key] : klass.primary_key
      klass.find self.send(id_key)
    end
  end

end

#has_many(*args) ⇒ Object 



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# File 'lib/apigee-platform/associations.rb', line 10

def has_many(*args)
  klass_sym = args.first.to_sym
  options = args.extract_options!
  prefix = self.name
  klass_name = prefix + klass_sym.to_s.classify

  instance_eval do
    define_method "#{klass_sym}" do |scope = :all|
      klass = klass_name.constantize
      prefix_params = klass.prefix_options.inject({}) do |res,pair| 
        res[pair.first] = self.send(options[pair.first] || pair.last)
        res 
      end

      if options[:through].present?
        self.send(options[:through]).map do |el|
          klass.instantiate_record(el.attributes, prefix_params)
        end
      else 
        klass.find scope, :params => prefix_params
      end
    end

    define_method "#{klass_sym.to_s.singularize}" do |id = nil|
      if id
        method(klass_sym).call(id)
      else
        method("create_#{klass_sym.to_s.singularize}").call
      end
    end

    define_method "create_#{klass_sym.to_s.singularize}" do |params={}|
      klass = klass_name.constantize
      prefix_params = klass.prefix_options.inject({}){|res,pair| res[pair.last] = self.send(options[pair.first] || pair.last); res }
      klass.new params.merge(prefix_params)
    end

  end

end