Allow configurable file param name

Author: meghan-mcqueeney

src/uploader.js

@@ -41,7 +41,7 @@ function uiUploader($log) {
             }
             if (self.files[i].active)
                 continue;
-            ajaxUpload(self.files[i], self.options.url, self.options.data, headers);
+            ajaxUpload(self.files[i], self.options.url, self.options.data, self.options.paramName, headers);
         }
     }
 
@@ -68,9 +68,10 @@ function uiUploader($log) {
         return (bytes / Math.pow(1024, i)).toFixed(i ? 1 : 0) + ' ' + sizes[isNaN(bytes) ? 0 : i + 1];
     }
 
-    function ajaxUpload(file, url, data, headers) {
-        var xhr, formData, prop, key = 'file';
+    function ajaxUpload(file, url, data, key, headers) {
+        var xhr, formData, prop;
         data = data || {};
+        key = key || 'file';
 
         self.activeUploads += 1;
         file.active = true;

test/uploaderSpec.js

@@ -53,4 +53,32 @@ describe('uiUploader', function() {
             expect(uiUploader.files).toEqual(files);
         });
     });
+
+    describe('#startUpload', function() {
+        var formData;
+        var file;
+
+        beforeEach(function() {
+            file = new File([''], 'testFile');
+            formData = {
+                append: jasmine.createSpy()
+            };
+
+            uiUploader.addFiles([file]);
+
+            spyOn(window, 'FormData').and.returnValue(formData);
+        });
+
+        describe('with a specified paramName', function() {
+            beforeEach(function() {
+                uiUploader.startUpload({
+                    paramName: 'test'
+                });
+            });
+
+            it('sets the paramName when appending the formdata', function() {
+                expect(formData.append).toHaveBeenCalledWith('test', file, 'testFile');
+            });
+        });
+    });
 });