python - Twilo python Flask传递参数

Question

我有一个使用 python 的应用程序，但我想将语音识别的结果传递给调用者，我不知道如何，我已经尝试了所有方法。我什至试图通过在顶部声明它不起作用来将 lastRes 设置为全局变量

lastRes = ""
app = Flask(__name__)

@app.route("/voice", methods=['GET', 'POST'])
def voice():
  resp = VoiceResponse()
  resp.say("What is your name?")
  print ("1---------------")
  resp.gather(input='speech', timeout="3", action='/gather', method='POST')
  #resp.append(gather)
  print ("2---------------")
  return str(resp)

@app.route("/mainFlow", methods=['GET', 'POST'])
def mainFlow():
  resp = VoiceResponse()
  resp.say("We are done?")
  print("5--------------->" + str(lastRes))
  return str(resp)

@app.route("/gather", methods=['GET', 'POST'])
def gather():
  resp = VoiceResponse()
  print("3---------------")
  lastRes = request.values.get("SpeechResult", "")
  print("4--------------->" + str(lastRes))
  resp.redirect('/mainFlow')
  return str(resp)

if __name__ == "__main__":
  lastRes = ""
  app.run(debug=True)

如何将 lastRes 传递给例程/mainFlow？

Answer 1

此处为 Twilio 开发人员布道师。

首先，我会问您为什么要在使用结果之前尝试重定向。您的 /gather 端点中已经有了语音结果，那为什么不响应呢？像这样:

@app.route("/gather", methods=['GET', 'POST'])
def gather():
  resp = VoiceResponse()
  lastRes = request.values.get("SpeechResult", "")
  resp.say('Thank you ' + lastRes + '.')
  resp.redirect('/mainFlow')
  return str(resp)

此响应将说“谢谢”和语音结果，然后重定向到主流程。

或者，您在这里使用 URL。您可以将响应设置为 URL 参数，如下所示:

import urllib

@app.route("/gather", methods=['GET', 'POST'])
def gather():
  resp = VoiceResponse()
  SpeechResult = request.values.get("SpeechResult", "")
  params = urllib.urlencode({"SpeechResult": SpeechResult})
  resp.redirect('/mainFlow?' + params)
  return str(resp)

然后您可以在 mainFlow 中使用 SpeechResult，例如:

@app.route("/mainFlow", methods=['GET', 'POST'])
def mainFlow():
  SpeechResult = request.args.get('SpeechResult')
  resp = VoiceResponse()
  resp.say("We are done? " + SpeechResult)
  return str(resp)

最后，您可以在 session 中设置 SpeechResult，因为它也在通话过程中保持不变。

from flask import Flask, session, request

@app.route("/gather", methods=['GET', 'POST'])
def gather():
  resp = VoiceResponse()
  session['SpeechResult'] = request.values.get("SpeechResult", "")
  resp.redirect('/mainFlow')
  return str(resp)

@app.route("/mainFlow", methods=['GET', 'POST'])
def mainFlow():
  SpeechResult = session['SpeechResult']
  resp = VoiceResponse()
  resp.say("We are done? " + SpeechResult)
  return str(resp)

让我知道这是否有帮助。