Module: Restful::Base::ClassMethods

Defined in:
lib/restful/base.rb

Overview

Class macros to setup restful functionality

Constant Summary collapse

ACTIONS =

List of REST actions

[:index, :show, :edit, :update, :new, :create, :destroy]

Instance Method Summary collapse

Instance Method Details

#restful(model: nil, route_prefix: nil, actions: :all) ⇒ Object

Restful is the macro that setup a controller to become restful. This macro accepts 3 params:

Params

  • model: A required parameter which is a symbol of the model name.

  • route_prefix: A prefix string to be used with controller’s url

helper.

  • actions: An array of actions that a controller should implement, if

none is passed then all seven REST actions are defined.

Examples

Simple:

class DocumentsController < ApplicationController
  include Restful::Base
  respond_to :html

  restful model: :document
end

This definition will create the seven REST actions for Document model, this setup a single object instance variable @document and a collection variable @documents.

Route prefix:

class DocumentsController < ApplicationController
  include Restful::Base
  respond_to :html

  restful model: :document, route_prefix: 'admin'
end

With route_prefix param every URL helper method in our controller will have the defined prefix.

‘edit_resource_path` helper method will call internally `admin_edit_resource_path`.

Listed actions variation:

The last parameter actions allows you to list in an array the actions that you want your controller to have:

class DocumentsController < ApplicationController
  include Restful::Base
  respond_to :html

  restful model: :document, actions: [:index, :show]
end

In this case our controller will only respond to those 2 actions. We can do it the other way, indicate list of actions that shouldn’t be defined:

class DocumentsController < ApplicationController
  include Restful::Base
  respond_to :html

  restful model: :document, actions: [:all, except: [:destroy, :show]]
end

For this last example all seven REST actions will be defined but :destroy and :show

Strong params Restful provides 3 hooks for you to implement in your controller, two of these hooks will be called depending on the action that is being executed: :create_secure_params and :update_secure_params.

if you don’t require a specific strong params definition for each action, then just implement :secure_params method and this will be called.

Considerations

From previous examples you must have notice by now that the respond_to macro es need it. This is because all REST actions call the respont_with method, which works with the respond_to macro. Just include it in your controllers and list the formats do you wish your controller to respond.



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# File 'lib/restful/base.rb', line 333

def restful(model: nil, route_prefix: nil, actions: :all)
  self.class_attribute :model_name, :class_name, :route_prefix,
    instance_writer: false

  self.model_name = model
  self.class_name = class_from_name
  self.route_prefix = route_prefix

  include InstanceMethods
  include Restful::Actions

  setup_actions actions unless actions == :all

  if respond_to?(:helper_method)
    helper_method :collection, :resource, :resource_class,
      :edit_resource_path, :edit_resource_url, :new_resource_path,
      :new_resource_url, :collection_path, :collection_url

  end
end