add a way to download created files during the modelling process

[MHuberFaust]

make a zip file downloadable including file for configuration, doc-topic, topic-key, key-weight?, static visualisation?

[severinsimmler]

All produced files will be saved as a ZIP archive in the current working directory by default.

Todo

Do not save the files automatically, but offer a button that triggers the saving.

[severinsimmler]

https://stackoverflow.com/questions/24577349/flask-download-a-file https://stackoverflow.com/questions/30024948/flask-download-a-csv-file-on-clicking-a-button

[severinsimmler]

@app.route('/model/download') 
def download_generated_data():
    return send_file(pathlib.Path(tempdir, 'topicmodeling.zip'),  # dump it to static folder?
                              mimetype='???',  # is there a mimetype for ZIP archives?
                              attachment_filename='topicmodeling.zip',
                              as_attachment=True)

[severinsimmler]

https://stackoverflow.com/questions/42887955/how-to-download-files-using-pyqt5-webenginewidgets

[severinsimmler]

If I merge testing into master, the issue will close. When the download button is pressed, the ZIP archive is automatically saved to the download folder. So it doesn't open a dialog or anything, like in a normal browser. Implementing such a dialog would be an extension for a later release.

Here is an example for a download manager in C++: http://doc.qt.io/qt-5/qtnetwork-downloadmanager-downloadmanager-cpp.html

One could translate that into Python or something. No idea.

[severinsimmler]

https://github.com/pycom/EricShort/tree/master/Helpviewer/Download

[thvitt]

Isn't a call to QFileDialog.getSaveFileName enough?

[severinsimmler]

Great, thank you! Exactly what I was looking for :)