The Ext JS grid functionality is one of the most advanced portions of the framework. With the backing of the Ext.data
package, the grid can pull information from a remote server in an integrated manner—this support is built into the grid class. Thanks to the array of configuration options available, we can present this data easily in a variety of forms, and set it up for manipulation by our users.
In this chapter, we've seen how the data support provided by the grid offers an approach to data manipulating that will be familiar to many developers. The amend-and commit approach allows fine-grained control over the data that is sent to the server when used with a validation policy, along with the ability to reject changes. As well as amending the starting data, we've seen how the grid provides functionality to add and remove rows of data.
We've also shown how standard Ext JS form fields such as the ComboBox can be integrated to provide a user interface on top of...