Flask-uploads has something called UploadSet which is described as a "single collection of files". I can use this upload set to save my file to a predefined location. I've defined my setup:
app = Flask(__name__)
app.config['UPLOADS_DEFAULT_DEST'] = os.path.realpath('.') + '/uploads'
app.config['UPLOADED_PHOTOS_ALLOW'] = set(['png', 'jpg', 'jpeg'])
app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024
# setup flask-uploads
photos = UploadSet('photos')
configure_uploads(app, photos)
@app.route('/doit', method=["POST"])
def doit():
myfile = request.files['file']
photos.save(myfile, 'subfolder_test', 'filename_test')
return ''' blah '''
This should save to ./uploads/photos/subfolder_test/filename_test.png
My test image is: 2.6MB and is a png file. When I upload this file, I get the error:
...
File "/home/btw/flask/app.py", line 57, in doit
photos.save(myfile, 'subfolder_test', 'filename_test')
File "/usr/local/lib/python2.7/dist-packages/flaskext/uploads.py", line 388, in save
raise UploadNotAllowed()
UploadNotAllowed
However it doesn't say exactly what is not allowed. I have also tried removing all constraints, but the app still throws this error. Why?
EDIT:
Okay, so I figured out that it's not actually the constraints that is causing the problem. It is the subfolder and/or the filename that is causing the problem:
# This works
# saves to: ./uploads/photos/filename_test.png
photos.save(myfile)
But I want to save to my custom location ./uploads/photos/<custom_subdir>/<custom_filename>. What is the correct way of doing this?
You need to give your filename_test the extension as well
photos.save(myfile, 'subfolder_test', 'filename_test.png')
The UploadSet checks the extension on the new file name and will throw the exception if the new extension is not allowed.
Since you are not giving the new file an extension, it does not recognize it.