希望有人能指出我正确的方向。我希望能够通过 Twilio Studio 做到这一点。如果没有，我可以学习 TwiML。这大概是我的大脑所能伸展的极限了。
我在 Twilio Studio 中创建了一个简单的流程，使呼叫者能够录制语音邮件。我想为当前呼叫者添加一个选项，以便能够播放前一个呼叫者录制的语音邮件。我想我需要为此使用 Say/Play 小部件。我需要为“音频文件的 URL”使用什么才能播放之前录制的语音邮件？我假设每次呼叫者留下语音邮件时此 URL 都会更改，因此需要自动更新。我可以以某种方式使用“RecordingURL”吗？有没有使用 TwiML 的解决方案？任何帮助表示赞赏
谢谢！
【问题讨论】：
标签： twilio
如果没有办法在调用之间保持状态，这是不可能的。最好的方法是拥有某种类型的数据库，您可以存储记录 SID 并在未来的流程中引用它。您可以使用Twilio Sync 或Airtable 之类的工具来执行此操作，但它确实需要代码。
我想不出不涉及一些编码的方法。
其他方法是列出记录记录并将最近的记录从列表中拉出，但不理想，因为您不知道最后一次记录发生的时间。
另一种方法是修改与该 Studio Flow 的 Twilio 电话号码关联的 webhook，以将最后一个录制 SID 传递到您的流中，然后使用该 SID 动态构建录制 URL 以进行播放，如 JSON 流中所示下面（您可以在创建新的 Studio Flow 时导入）。
不要忘记将 recordingStatuscallback 设置为上述 Twilio 函数，该函数会更新电话号码 webhook 以传入录制 SID。您将录制语音邮件小部件的录制状态回调设置为指向您唯一的函数域和函数路径（当前设置为：https://magnolia-kitty-3234.twil.io/phUpdate）。
请随时改进并分享以下内容。
Twilio 函数代码
exports.handler = function(context, event, callback) {
let client = context.getTwilioClient();
const telephoneNumAccountSid = "PN..."; \\ set this to your Phone Number SID
const accountSid = event.AccountSid;
const studioFlowSid = "FW..."; \\ set this to your Studio Flow SID
const webhookUrl = `https://webhooks.twilio.com/v1/Accounts/${accountSid}/Flows/${studioFlowSid}`;
const recordingSid = event.RecordingSid;
client
.incomingPhoneNumbers(telephoneNumAccountSid)
.update({ voiceUrl: `${webhookUrl}?recording=${recordingSid}`, voiceFallbackUrl: `${webhookUrl}?recording=${recordingSid}` })
.then (result => {
console.log(result.voiceUrl);
callback(null, "success");
})
.catch(err => {
console.log(err);
callback("error");
});
};
Studio 流程 JSON
{
"description": "A New Flow",
"states": [
{
"name": "Trigger",
"type": "trigger",
"transitions": [
{
"event": "incomingMessage"
},
{
"next": "set_variables_1",
"event": "incomingCall"
},
{
"event": "incomingRequest"
}
],
"properties": {
"offset": {
"x": 0,
"y": 0
}
}
},
{
"name": "split_1",
"type": "split-based-on",
"transitions": [
{
"next": "say_play_2",
"event": "noMatch"
},
{
"next": "gather_1",
"event": "match",
"conditions": [
{
"friendly_name": "{{trigger.call.recording}}",
"arguments": [
"{{trigger.call.recording}}"
],
"type": "is_not_blank",
"value": "Is Not Blank"
}
]
}
],
"properties": {
"input": "{{trigger.call.recording}}",
"offset": {
"x": 110,
"y": 350
}
}
},
{
"name": "say_play_1",
"type": "say-play",
"transitions": [
{
"event": "audioComplete"
}
],
"properties": {
"play": "https://api.twilio.com/2010-04-01/Accounts/{{flow.variables.accountSid}}/Recordings/{{flow.variables.recording}}.mp3",
"offset": {
"x": 450,
"y": 1110
},
"loop": 1
}
},
{
"name": "set_variables_1",
"type": "set-variables",
"transitions": [
{
"next": "split_1",
"event": "next"
}
],
"properties": {
"variables": [
{
"value": "{{trigger.call.recording}}",
"key": "recording"
},
{
"value": "{{trigger.call.AccountSid}}",
"key": "accountSid"
}
],
"offset": {
"x": 60,
"y": 170
}
}
},
{
"name": "say_play_2",
"type": "say-play",
"transitions": [
{
"next": "record_voicemail_1",
"event": "audioComplete"
}
],
"properties": {
"voice": "Polly.Joanna-Neural",
"offset": {
"x": -120,
"y": 650
},
"loop": 1,
"say": "Please leave a message at the beep!",
"language": "en-US"
}
},
{
"name": "record_voicemail_1",
"type": "record-voicemail",
"transitions": [
{
"event": "recordingComplete"
},
{
"event": "noAudio"
},
{
"event": "hangup"
}
],
"properties": {
"transcribe": false,
"offset": {
"x": -120,
"y": 860
},
"trim": "trim-silence",
"play_beep": "true",
"recording_status_callback_url": "https://magnolia-kitty-3234.twil.io/phUpdate",
"timeout": 5,
"max_length": 3600
}
},
{
"name": "gather_1",
"type": "gather-input-on-call",
"transitions": [
{
"next": "split_2",
"event": "keypress"
},
{
"event": "speech"
},
{
"event": "timeout"
}
],
"properties": {
"number_of_digits": 1,
"speech_timeout": "auto",
"offset": {
"x": 300,
"y": 650
},
"loop": 1,
"finish_on_key": "#",
"say": "There is a previous recording, press 1 if you want to listen to it or 2 if you want to leave a new voicemail.",
"stop_gather": true,
"gather_language": "en",
"profanity_filter": "true",
"timeout": 5
}
},
{
"name": "split_2",
"type": "split-based-on",
"transitions": [
{
"event": "noMatch"
},
{
"next": "say_play_1",
"event": "match",
"conditions": [
{
"friendly_name": "If value equal_to 1",
"arguments": [
"{{widgets.gather_1.Digits}}"
],
"type": "equal_to",
"value": "1"
}
]
},
{
"next": "say_play_2",
"event": "match",
"conditions": [
{
"friendly_name": "If value equal_to 2",
"arguments": [
"{{widgets.gather_1.Digits}}"
],
"type": "equal_to",
"value": "2"
}
]
}
],
"properties": {
"input": "{{widgets.gather_1.Digits}}",
"offset": {
"x": 280,
"y": 870
}
}
}
],
"initial_state": "Trigger",
"flags": {
"allow_concurrent_calls": true
}
}
艾伦
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