Module: Annotation

Defined in:
lib/annotation.rb

Overview

annotation.rb – annotation library for ruby

ex.

require 'annotation'

module ControllerAnnotations
  extend Annotation

  def GET(method_name, path)
    (@__routes ||= []) << [path, :GET, method_name]
  end

  def POST(method_name, path)
    (@__routes ||= []) << [path, :POST, method_name]
  end

  def (method_name)
    alias_method "__orig_#{method_name}", method_name
    s = "def #{method_name}(*args)
           raise '302 Found' unless @current_user
           __orig_#{method_name}(*args)
         end"
    self.class_eval s    # not 'eval(s)'
  end

  annotation :GET, :POST, :login_required         # !!!!!!

end

class Controller
  extend ControllerAnnotations

  GET('/')
  def index
    "index() called."
  end

  GET('/:id')
  def show(id)
    "show(#{id}) called."
  end

  POST('/:id')
  
  def update(id)
    "update(#{id}) called."
  end

  p @__routes   #=> [["/", :GET, :index],
                #    ["/:id", :GET, :show],
                #    ["/:id", :POST, :update]]
end

p Controller.new.update(123)   #=> 302 Found (RuntimeError)

See README.txt for more examples.

Defined Under Namespace

Modules: MethodAdded

Constant Summary collapse

VERSION = 
"$Release: 0.1.2 $".split(' ')[1]

Instance Method Summary collapse

Instance Method Details

#annotation(*names) ⇒ Object 



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# File 'lib/annotation.rb', line 76

def annotation(*names)
  self.class_eval do
    s = ""
    names.each do |name|
      aliased = alias_name(name)
      alias_method aliased, name
      private aliased
      s << "def #{name}(*args)
              (@__annotations ||= []) << [:#{aliased}, args]
            end
            protected :#{name}\n"    # or private?
    end
    self.class_eval s
  end
end