How can I get data?

[Valera]

{
    "a":7,
    "b":26,
    "c":40,
    "records":[
        {"aa":"1","bb":"2"}
        ]
} 

How can I get data a,b,c from Ext.data.Store ?

[scottmartin]

Is the data already in the store? Where do you want it? in a form?

Scott.

[Valera]

in constructing the grid, I get the data, but can not apply to them

[scottmartin]

Here is a basic example:

{
    'items': [
        {
            'name': 'Lisa',
            'email': 'lisa@simpsons.com',
            'change': 100
        },
        {
            'name': 'Bart',
            'email': 'bart@simpsons.com',
            'change': -20
        },
        {
            'name': 'Homer',
            'email': 'home@simpsons.com',
            'change': 23
        },
        {
            'name': 'Marge',
            'email': 'marge@simpsons.com',
            'change': -11
        }
    ]
}

Ext.onReady(function(){

    Ext.create('Ext.data.Store', {
        storeId:'simpsonsStore',
        fields:['name', 'email', 'change',],
        autoLoad: true,
        proxy: {
            type: 'ajax',
            url: 'data.json',
            reader: {
                type: 'json',
                root: 'items'
            }
        }
    });

    Ext.create('Ext.grid.Panel', {
        title: 'Simpsons',
        store: Ext.data.StoreManager.lookup('simpsonsStore'),
        columns: [
            { header: 'Name',  dataIndex: 'name' },
            { header: 'Email', dataIndex: 'email', flex: 1 },
            { header: 'Change', dataIndex: 'change' }
        ],
        height: 200,
        width: 400,
        renderTo: Ext.getBody()
    }); 

});

[Valera]

need these data to obtain: (total,closed,itc BEFORE items)

{
    'total':200,
    'closed':300,
    'itc':'zzz...'
    'items': [
        {
            'name': 'Lisa',
            'email': 'lisa@simpsons.com',
            'change': 100
        },
        {
            'name': 'Bart',
            'email': 'bart@simpsons.com',
            'change': -20
        },
        {
            'name': 'Homer',
            'email': 'home@simpsons.com',
            'change': 23
        },
        {
            'name': 'Marge',
            'email': 'marge@simpsons.com',
            'change': -11
        }
    ]
} 

these data are easily transferred from the server after the recount than on the client

sampl:
1.png

in order not to perform this function:

var size = 0; var foldersCount = 0; var filesCount = 0;
        this.store.each(function(record) {
             if(record.get('filesize') !== '-'){
                 size  = Number(size + record.get('filesize'));
                 filesCount++;
            }
            else {foldersCount++;}
        }); 

[scottmartin]

Are you referring to the totalProperty, etc?

Scott.

[Valera]

yes yes yes

and any other data, not only totalProperty.

[scottmartin]

The server JSON should return these values in the result set and you simply need to set these values in your reader and it will be used.

reader        : {
    type            : 'json',
    totalProperty   : 'total',
    successProperty : 'success',
    messageProperty : 'message',
    root            : 'items'
},

Scott.

[Valera]

Thank you!