Cannot read property 'length' of undefined

[Student4Gold]

Hello,

Im a freshman in json and sencha framework.

I am working on an app and at first i want to get Data from our webservice and display it in a gridview.
But i get this error " Cannot read property 'length' of undefined".

This is the output of the PHP:

[{"id":"198","product_id":"15","NAME":"Markenjodsalz","amount":"250","UNIT":"g","quantaty":"1"},{"id":"220","product_id":"48","NAME":"Magarine","amount":"500","UNIT":"g","quantaty":"2"},{"id":"209","product_id":"49","NAME":"H fettarme Milch","amount":"1","UNIT":"Liter","quantaty":"1"},{"id":"218","product_id":"87","NAME":"Milchschnitte","amount":"4","UNIT":"St","quantaty":"1"},{"id":"217","product_id":"153","NAME":"Mixery","amount":"1","UNIT":"Flasche","quantaty":"1"},{"id":"219","product_id":"173","NAME":"Gouda gerieben","amount":"200","UNIT":"g","quantaty":"1"}]

And i took the example-code from the api-documentation:

Ext.regModel('User', {
    fields: [
			{name: 'id', type: 'int'},
			{name: 'product_id', type: 'int'},
			{name: 'amount', type: 'int'},
			{name: 'quantaty', type: 'int'},
			'NAME', 'UNIT'
		]
});

var myStore = new Ext.data.Store({
    model: 'User',
    proxy: {
        type: 'ajax',
        url : '*****/iphone/shoppinglist.php',
        reader: {
            type: 'json',
            root: 'users'
        }
    },
    autoLoad: true
});

Don't know what i am doing wrong.

Thanks for help

[Stoot98]

Your reader defines a root of 'users' but your json response is just an array. Change your PHP to output something like...

{'users': [{...}, {...}]}

[fyghtsoft]

That was the correct answer for and solved my issue. Thanks.