Question

I have a server-side script (PHP) returning JSON data to populate an ExtJS Grid.

This data comes from a MySQL query, containing some NULL values.

When PHP encodes it into the JSON notation, it keeps the NULL intact:

{"id":"33","name":"Test1","url":null,"cls":"x-tree-noicon","expanded":true}

But… when this data is displayed in the ExtJS grid, it shows a “null” string in the place of the NULL value.

I don’t want it to display “null“. I just want it empty (an empty string).

What is the easiest way to achieve this?

Thanks.

Answer 1

I’m not sure if the easiest but the first thing that comes to my mind is creating a custom renderer. You can use something like this:

function render(value){
    if(value === null){
        value = '';
    }
    return value;
}