Get Dataframe as a csv file

Hi,

I’m trying to download a dataframe as a csv, where I try to do as discussed in this topic; Allowing users to download CSV on click

My problem is, that it writes all the data in the first row and is not recognizing any line breakers.

I send the dataframe as csv to the href link

@app.callback(Output('my-link', 'href'),
              [Input('download-button', 'n_clicks')])
def update_link(clicks):
global df
return '/dash/urlToDownload?value={}'.format(df.to_csv(index=False, sep=',',
                                                                             encoding='utf-8'))

My route looks like this;

@app.server.route('/dash/urlToDownload')
def download_csv():
    value = flask.request.args.get('value')
    # create a dynamic csv or file here using `StringIO`
    # (instead of writing to the file system)
    strIO = io.StringIO()
    strIO.write(value)

    writer = csv.writer(strIO, delimiter=',', quotechar='|')
    writer.writerow(value)

    mem = io.BytesIO()
    mem.write(strIO.getvalue().encode('utf-8'))

    mem.seek(0)
    strIO.close()
    return flask.send_file(mem,
                     mimetype='text/csv',
                     attachment_filename='downloadFile.csv',
                     as_attachment=True)

An example of what value is in this case;

version,id,value1,2,3

where the expected csv should look like this;

 version     id     value
 1           2      3
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