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send_from_directory > SharedDataMiddleware

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Armin Ronacher 2010-07-06 20:28:48 +02:00
parent 16e4d5a655
commit f1a6fbe250
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23
docs/patterns/fileuploads.rst
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@ -28,8 +28,6 @@ bootstrapping code for our application::
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif']) ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])
app = Flask(__name__) app = Flask(__name__)
app.add_url_rule('/uploads/<filename>', 'uploaded_file',
build_only=True)
So first we need a couple of imports. Most should be straightforward, the So first we need a couple of imports. Most should be straightforward, the
:func:`werkzeug.secure_filename` is explained a little bit later. The :func:`werkzeug.secure_filename` is explained a little bit later. The
@ -100,14 +98,23 @@ before storing it directly on the filesystem.
>>> secure_filename('../../../../home/username/.bashrc') >>> secure_filename('../../../../home/username/.bashrc')
'home_username_.bashrc' 'home_username_.bashrc'
Now if we run that application, you will notice that uploading works, but Now one last thing is missing: the serving of the uploaded files. As of
you won't actually see that uploaded file. Well, you would have to Flask 0.5 we can use a function that does that for us::
configure the server to serve that file for you. This is not handy for
development situations or when you are just too lazy to properly set up from flask import send_from_directory
the server. Would be nice to have the files still be available in that
situation, and that is really easy to do, just hook in a middleware:: @app.route('/uploads/<filename>')
def uploaded_file(filename):
return send_from_directory(app.config['UPLOAD_FOLDER'],
filename)
Alternatively you can register `uploaded_file` as `build_only` rule and
use the :class:`~werkzeug.SharedDataMiddleware`. This also works with
older versions of Flask::
from werkzeug import SharedDataMiddleware from werkzeug import SharedDataMiddleware
app.add_url_rule('/uploads/<filename>', 'uploaded_file',
build_only=True)
app.wsgi_app = SharedDataMiddleware(app.wsgi_app, { app.wsgi_app = SharedDataMiddleware(app.wsgi_app, {
'/uploads': UPLOAD_FOLDER '/uploads': UPLOAD_FOLDER
}) })