File upload in extjs 4.2 without form.submit()

Question

I\'m trying to upload a file (as of now of any extension) in extjs. I have a model and store. the file upload happens from a window and I dont have a form in the window. All

Answer 1

If you want to still use ExtJS's fileuploadfield and upload through an AJAX call using HTML5 FileReader, you can do it like such:

launchUpload: function () {
    //get a handle of the "file" input in the widget itself...
    var fileInput = document.getElementById(yourUploadField.button.fileInputEl.id);
    var fileReader = New FileReader();
    var fileToUpload = fileInput.files[0]; //assuming your only uploading one file...
    var me = this

    fileReader.onload = function (e) {
         me.onLoadFile(e, me, fileToUpload.name);
    }

    fileReader.readAsDataURL(fileToUpload);

}, 
onLoadFile: function (e, scope, filename) {

     //I carry the scope around for functionality...

     Ext.Ajax.request({
        method: 'POST',
        url: 'url',
        scope: scope,
        jsonData: { fileNameParameter: filename, fileDatainBase64: e.target.result},
        success: function (response, operation) {
            //success..
        },
        failure: function (response, operation) {
            //failure...
        }
    });       

}