Book Image

Learning Ext JS_Fourth Edition

Book Image

Learning Ext JS_Fourth Edition

Overview of this book

Table of Contents (22 chapters)
Learning Ext JS Fourth Edition
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Working with the store


As mentioned before, a store is a collection of models that acts as a client cache to manage our data locally. We can use this collection to perform tasks such as sorting, grouping, and filtering the models in a very easy way. We can also pull data from our server using one of the available proxies and a reader to interpret the server response and fill the collection.

A store is usually added to widgets/components to display data. Components such as the grid, tree, combo box, or data view use a store to manage the data. We will learn about these components in future chapters. If we create a custom widget, we should use a store to manage the data too. This is why this chapter is really important; we use models and stores to deal with the data.

In order to create a store, we need to use the Ext.data.Store class. The following example will use the Customer model that we already have worked, and will extend the store to create a collection of customers:

Ext.define('MyApp...