Flask file download example

Important: The below configuration variables need to be set before initiating FileUpload. This will enable FFU to update your database with the extra columns required to store files in your database. This is easy if you are using Flask-SqlAlchemy:. For Example:. For example:. The first argument required by this method is models - the SQLAlchemy model s. For example If everything works fine and the server starts without any problem, we have created our file downloader. If you click the download button present in the URL, then the file will start downloading.

For the above code to work properly, we need a file with the name sample. In this tutorial, we learned to create a file uploader and file downloader using the Flask library.

In addition, we have seen how to configure the max size and extension of the file upload. You may also want to see our step-by-step guide on creating a Flask app in python. How to upload a file with a python script? How to make it so you can acess it not only on the local network?

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Post as a guest Name. Email Required, but never shown. The Overflow Blog. A conversation about how to enable high-velocity DevOps culture at your Podcast An oral history of Stack Overflow — told by its founding team. Featured on Meta. New responsive Activity page. Linked 0. Viewed 35k times. So I wrote the following code: app. Error But this code doesn't seem to work. If anybody have an idea it would be great.

Thanks in advance. Improve this question. Alexandre D. Where are these files on the file system? First step is to create a project root directory under which I will put all the required files for the project. Create the below app. This file should be created under the project root directory. Notice how I create flask instance. Next I will create main. In the above source code, the root path or endpoint will simply render the UI. This UI contains only one link for downloading a file from the server.