Book Image

Ext JS 3.0 Cookbook

Book Image

Ext JS 3.0 Cookbook

Overview of this book

Using Ext JS you can easily build desktop-style interfaces in your web applications. Over 400,000 developers are working smarter with Ext JS and yet most of them fail to exercise all of the features that this powerful JavaScript library has to offer. Get to grips with all of the features that you would expect with this quick and easy-to-follow Ext JS Cookbook. This book provides clear instructions for getting the most out of Ext JS with and offers many exercises to build impressive rich internet applications. This cookbook shows techniques and "patterns" for building particular interface styles and features in Ext JS. Pick what you want and move ahead. It teaches you how to use all of the Ext JS widgets and components smartly, through practical examples and exercises. Native and custom layouts, forms, grids, listviews, treeviews, charts, tab panels, menus, toolbars, and many more components are covered in a multitude of examples.The book also looks at best practices on data storage, application architecture, code organization, presenting recipes for improving themóour cookbook provides expert information for people working with Ext JS.
Table of Contents (15 chapters)
Ext JS 3.0 Cookbook
Credits
About the Author
About the Reviewer
Preface

Creating a grid that uses server-side sorting


The grid control has the ability to instruct its data store to sort the records cache, either in place, or by requesting the store's proxy to download a refreshed version of the data object in a sorted order.

In this recipe, the Movies grid implements server-side sorting. By default, the Title column is sorted:

Clicking on any column will initiate a sort operation on the server:

After the download, the sorted data is shown:

How to do it...

  1. 1. Define the data store:

    var store = new Ext.data.JsonStore({
    url: 'grid-sort-remote.php',
    root: 'movies',
    idProperty: 'id',
    fields: ['id', 'title', 'release_year', 'rating'],
    remoteSort: true
    });
    
  2. 2. Define the default sort:

    store.setDefaultSort('release_year', 'desc');
    
  3. 3. Create the grid panel:

    Ext.onReady(function() {
    var grid = new Ext.grid.GridPanel({
    title: 'Movies',
    store: store,
    columns: [
    { header: "ID", width: 30, dataIndex: 'id', sortable: true, hidden:true },
    { id: 'title-col', header: "Title", width...