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POCan't upload file to App Engine "list index out of range"
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  1. POCan't upload file to App Engine "list index out of range"
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    copied!<p>I am trying to updload a picture from a Phonegap application to my Python App Engine project. The phone app trys to upload the file but App engine returns a "list index out of range" error.</p> <p>I have the following code on the App Engine side to handle the files,</p> <pre><code>class UploadHandler(blobstore_handlers.BlobstoreUploadHandler): def post(self): upload_files = self.get_uploads('file') blob_info = upload_files[0] self.redirect('/serve/%s' % blob_info.key()) </code></pre> <p>And the following code on the PhoneGap side to send the file,</p> <pre><code> function uploadImage() { var smallImage = document.getElementById('cameraImage'); if (smallImage.src &amp;&amp; smallImage.src !== "") { var f = new FileTransfer(); f.upload(smallImage.src, "http://testtest.appspot.com/upload", // success callback function(result) { document.getElementById('uploadProgress').innerHTML = result.bytesSent + ' bytes sent'; alert(result.responseCode + ": " + result.response); }, // error callback function(error) { alert('error uploading file: ' + error.code); }, // options { fileName: 'myImage.jpg', params: { 'username':'jtyberg' } }); } } </code></pre> <p>The error is as follows,</p> <pre><code>"POST /upload HTTP/1.1" 500 487 - "BlackBerry9550/5.0.0.469 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/-1" "testtest.appspot.com" ms=416 cpu_ms=93 api_cpu_ms=0 cpm_usd=0.014221 loading_request=1 instance=00c61b117ca6c4ea405471eea592a8f79ac6 E 2011-08-06 11:49:17.309 list index out of range Traceback (most recent call last): File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/__init__.py", line 702, in __call__ handler.post(*groups) File "/base/data/home/apps/s~testtest/1.352363227571120815/main.py", line 62, in post blob_info = upload_files[0] IndexError: list index out of range </code></pre> <p>When I try to upload a file via a web form it works great.</p>
 

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