To add Clone and Delete functionality to the Row Editing Plugin. Using this override you will not have to implement “Delete” and “Clone” functionality, so in other words “All inclusive”. You can also add glyphs, move the “Cancel” button a little bit to the right to make the buttons notable.
One of the most popular questions in ExtJs forums (stackoverflow) is how to extract data from non standard JSON and put it in store. First, I would like to suggest that you should avoid this trick. Try to speak with BackEnd developers and get appropriate JSON format for your application. However, if it is not possible, you can use the workarounds, which are described in this post.
Sometimes we use number fields as a numeric ID field. Unfortunately, it is a very bad idea. Such an implementation can be source of different runtime bugs.