Hello,
I have written a small web app to generate a pdf letter using information from a form. I tested the code on my laptop with the development flask server and it runs fine. However, when I try and use the app on this server, it hangs just when I get to the code to generate the PDF.
I never get an error, I checked the logs a bunch of times. It just keeps loading forever. I was wondering if someone could take a look and see if I am doing anything wrong.
My code
from flask import Flask, render_template, request, send_file
import os, random, io, pdfkit
app = Flask(__name__)
@app.route("/")
def main():
return "<a href='/nice/'>Nice Letter</a><br><a href='/firm/'>Firm Letter</a>"
@app.route("/nice/")
def nice_letter():
context = {
"page_title": "Nice Letter",
"page_header": "Nice Letter",
"post_location": "/pdf/nice/"
}
return render_template("letter.html", **context)
@app.route("/firm/")
def firm_letter():
context = {
"page_title": "Firm Letter",
"page_header": "Firm Letter",
"post_location": "/pdf/firm/"
}
return render_template("letter.html", **context)
@app.route("/pdf/<letter>/", methods=["POST"])
def create_pdf(letter):
letter_type = letter
context = {
"letter_date": request.form["letter_date"],
"recipient_name": request.form["recipient_name"],
"patient_name": request.form["patient_name"],
"appointment_date": request.form["appointment_date"]
}
if letter_type == "nice":
template = render_template("nice_letter.html", **context)
elif letter_type == "firm":
template = render_template("firm_letter.html", **context)
filename = ''.join([f"{random.randint(0, 9)}" for _ in range(10)])
pdfkit.from_string(template, filename)
return_data = io.BytesIO()
with open(filename, "rb") as fo:
return_data.write(fo.read())
return_data.seek(0)
os.remove(filename)
return send_file(return_data, mimetype="application/pdf", download_name="letter.pdf")
@app.route("/img/")
def send_signature():
return send_file("signature.png")
glenn
|
9718
posts
|
PythonAnywhere staff
|
