Question

I’m trying to combine the advantages of Backbone.js and jQuery mobile. I’m developing for mobile devices and I’m currently trying to develop a dynamic list, for debug logging messages. Imagine you have a console window and you want to put entries inside. The thing is, after inserting a new <li>, the list has to be refreshed with $('#myList').listview('refresh'). This doesn’t work for me and I get this error:

Error: cannot call methods on listview prior to initialization; attempted to call method ‘refresh’

tagName : 'ul',
id : 'console',
consoleTemplate : _.template($('#console-template').html()),
initialize : function() {
  console.log('ConsoleView:init');
  this.$el.attr('data-inset', 'true');
  this.$el.attr('data-role', 'listview');
  this.$el.css('width', '50%');
  this.$el.append(this.consoleTemplate());
  // für alle Funktionen die mit this arbeiten
  _.bindAll(this, 'render', 'addConsoleItem', 'appendConsoleItem');
  this.consoleItemCollection = new ConsoleItemCollection();
  this.consoleItemCollection.bind('add', this.appendConsoleItem);
  this.counter = 0;
  this.render();
},
render : function() {
  console.log('ConsoleView:render');
  var self = this;
  _(this.consoleItemCollection.models).each(function(item) {
    self.addConsoleItem(item);
  }, this);
  return this;
},

This is an extract of my console view.

var view = Backbone.View.extend({
  el : 'div',
  id : 'content',
  consoleView : null,
  initialize : function() {
    console.log('ApplicationView:init');
    _.bindAll(this, 'render');
    this.$el.attr('data-role', 'content');
    _.bindAll(this, 'render');
    this.consoleView = new ConsoleView();
    this.consoleView.addConsoleItem(new ConsoleItemModel());
  },
  render : function() {
    console.log('ApplicationView:render');
    this.$el.append(this.consoleView.render().el);
    return this;
  }
});

This is my Application view.

So when to call the refresh method?

Thank you!

Answer 1

jQuery Mobile listview needs to be initialized before refresh can be triggered:

$('#myList').listview().listview('refresh');

If you want to find more about this and why is it important to be careful when working with a dynamically created content in jQuery Mobile take a look at my blog ARTICLE. Or you can find it HERE.