In extjs how to get uploaded file's contents

Question

I am working on file upload functionality in extjs+php. I want to upload file or image from extjs and need to send it to server side which i am designing in PHP. In extjs i have view file's code as-

Ext.define('Balaee.view.kp.dnycontent.Content', 
{
    extend:'Ext.panel.Panel',
    requires:[
              'Balaee.view.kp.dnycontent.ContentView'
              ],
    id:'ContentId',
    alias:'widget.Content',
    title:'This day in a history',
    items:[
     {
        xtype: 'fileuploadfield',
        hideLabel: true,
        emptyText: 'Select a file to upload...',
        id: 'upfile',
        //name:'file',
         width: 220
}],
    buttons:[
    {
        text: 'Upload',
        handler: function () {
            var file = Ext.getCmp('upfile').getEl().down('input[type=file]').dom.files[0];            console.log(file);
             var reader = new FileReader();
             filecontent=reader.readAsBinaryString(file);
             console.log(filecontent);
        }
    }
]

});

So when I am trying to upload animage file with the above code.The above line: Ext.getCmp('upfile').getEl().down('input[type=file]').dom.files[0]; stores information of the file as:

File {
    webkitRelativePath: "", 
    lastModifiedDate: Tue Jul 14 2009 11:02:31 GMT+0530 (India Standard Time), 
    name: "Koala.jpg", 
    type: "image/jpeg", 
    size: 780831…
 }

i.e. Information related to file is retrieved. But the actual file contents are not getting retrieved. So what do I need to modify to get actual uploaded file?

Answer 1

The contents of the file is not returned from readAsBinaryString, you have to set the onload callback that will be triggered when the file contents are read.

reader.onload = function (oFREvent) {
    console.log(oFREvent.target.result);
};