Permission denied on deployed Flask app file upload using AJAX

Question

My file upload was working perfectly on the built in Flask server, but the file upload broke when I deployed it (Apache2). Flask python code: ``` @app.route('/uploadajax', methods=['POST', 'GET']) def upload(): file = request.files['file'] if file and allowed_file(file.filename): filename = secure_filename(file.filename) file.save('TEST.pdf') return jsonify({'filename':'http://www.michigan.gov/documents/sprsConnectionsVol5No1_15852_7.pdf'}) ``` Javascript: ``` $(function() { $('#upload-file-btn').click(function() { var form_data = new FormData($('#upload-file')[0]) $.ajax({ type: 'POST', url: SCRIPT_ROOT + '/uploadajax', data: form_data, contentType: false, cache: false, processData: false, async: false, success: function(data) { console.log('Loaded questions successfully.') packet_frame = '' } }) }) }) ``` There's no error if I com…

Accepted Answer

You are saving a file with no path information. This means it'll be saved in the current working directory, wherever that may be for the Apache process. You do not have write permissions there. This working directory is almost certainly not the same place as where your project code is stored.

Specify a path for the file. You could use a directory based on the current module (`os.path.dirname(__file__)` is the directory of the current module), or configure a destination path for your application.

You may want to study the Uploading Files pattern in this context.

Permission denied on deployed Flask app file upload using AJAX

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