Fixes #2383: No error message on failed uploads

app/assets/javascripts/app/controllers/ticket_zoom/article_new.coffee

@@ -239,6 +239,26 @@ class App.TicketZoomArticleNew extends App.Controller
             # hide cancel on 90%
             if parseInt(progress) >= 90
               @cancelContainer.addClass('hide')
+
+          # Called when upload failed
+          onError: (message) =>
+            @attachmentPlaceholder.removeClass('hide')
+            @attachmentUpload.addClass('hide')
+            @$('.article-attachment input').val('')
+
+            if @callbackFileUploadStop
+              @callbackFileUploadStop()
+
+            new App.ControllerModal(
+              head: 'Upload Failed'
+              buttonCancel: 'Cancel'
+              buttonCancelClass: 'btn--danger'
+              buttonSubmit: false
+              message: message
+              shown: true
+              small: true
+              container: @el.closest('.content')
+            )
         )
     )
 

app/assets/javascripts/app/lib/base/html5Upload.js

@@ -57,6 +57,10 @@
                 console.log('Event: upload onCompleted, data = ' + data);
                 file = null;
                 (self.eventHandlers.onCompleted || noop)(data);
+            },
+            onError: function (message) {
+                console.log('Event: upload error, message: ' + message);
+                (self.eventHandlers.onError || noop)(message);
             }
         };
     }
@@ -226,12 +230,17 @@
 
             // Triggered when upload is completed:
             xhr.onload = function (event) {
-                console.log('Upload completed: ' + fileName);
-
                 // Reduce number of active uploads:
                 manager.activeUploads -= 1;
 
+                // call the error callback when the status is not ok
+                if (xhr.status !== 200){
+                  console.log('Upload failed: ' + fileName);
+                  upload.events.onError(event.target.statusText);
+                } else {
+                  console.log('Upload completed: ' + fileName);
                   upload.events.onCompleted(event.target.responseText);
+                }
 
                 // Check if there are any uploads left in a queue:
                 if (manager.uploadsQueue.length) {