Flask: Download a csv file on clicking a button [duplicate]
Here is one way to download a CSV file with no Javascript:
#!/usr/bin/pythonfrom flask import Flask, Responseapp = Flask(__name__)@app.route("/")def hello(): return ''' <html><body> Hello. <a href="/getPlotCSV">Click me.</a> </body></html> '''@app.route("/getPlotCSV")def getPlotCSV(): # with open("outputs/Adjacency.csv") as fp: # csv = fp.read() csv = '1,2,3\n4,5,6\n' return Response( csv, mimetype="text/csv", headers={"Content-disposition": "attachment; filename=myplot.csv"})app.run(debug=True)
You can use flask.send_file() to send a static file:
from flask import send_file@app.route('/getPlotCSV') # this is a job for GET, not POSTdef plot_csv(): return send_file('outputs/Adjacency.csv', mimetype='text/csv', attachment_filename='Adjacency.csv', as_attachment=True)
Firstly you need to import from flask make_response, that will generate your response and create variable, something like response.Secondly, make response.content_type = "text/csv"Thirdly - return your response.