Rails jQuery UJS-esque click event method actions.

jquery.rails-method-actions.js

/*
** jQuery Plugin Pattern
*  http://jqueryboilerplate.com/
*/

!function( $, undefined ) {
  var pluginName = 'railsMethodActions',
      defaults = {
        selector: '[data-method]'
      }

  function Plugin(element, options) {
    this.options = $.extend({}, defaults, options)
    this._name = pluginName
    this.$element = $( element ).find( this.options.selector )
    this.init()
  } // end Plugin()

  Plugin.prototype = {

    init: function() {
      this.$element.on( this.addNs('click'), this.handleMethod.bind( this ))
    },

    handleMethod: function(event) {
      var url, method

      if( event.isDefaultPrevented() ) return
      event.preventDefault()

      url = this.$element.attr('href')
      method = this.$element.data('method')

      $.ajax({
        url: url,
        type: 'post',
        dataType: "json",
        data: { "_method" : method }
      })
      .done( this.done.bind( this ) )
      .fail( this.fail.bind( this ) )
    },

    done: function(response) {
      location.href = response.redirect_location
    },

    fail: function(response) {
      alert('There was an error completing the action. Please contact your system administrator for assistance.')
    },

    addNs: function(event) {
      return event + '.' + pluginName
    }
  }

  $.fn[ pluginName ] = function( options ) {
    return this.each(function() {
      if (!$.data(this, 'plugin_' + pluginName)) {
        $.data(this, 'plugin_' + pluginName, new Plugin(this, options))
      }
    })
  }

}( jQuery )