每个人。 我再次在这里寻求您的帮助。我尝试在Firebase云功能中部署下一个功能，但是遇到了一些问题。 我的问题是，我开始学习Firebase云功能，并下载了此代码以了解更多信息，但是由于此错误，我无法尝试。
我已经解决了代码中的错误2和3，但其余部分都没有。
'use-strict'
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendForumNotification=functions.firestore.document("Questions/{question_id}/Answers/{answer_id}").onWrite((change,context)=> {
const question_id = context.params.question_id;
const answer_id = context.params.answer_id;
const db = admin.firestore();
console.log(question_id + ":" + answer_id);
return db.collection("Questions").doc(question_id).get().then((questionqueryResult)=>{
const question_owner_id = questionqueryResult.data().id;
const question = questionqueryResult.data().question;
const question_timestamp = questionqueryResult.data().timestamp;
return db.collection("Questions").doc(question_id).collection("Answers").doc(answer_id).get().then((answerqueryResult)=>{
const answered_user_id = answerqueryResult.data().user_id;
const answer = answerqueryResult.data().answer;
const is_answer = answerqueryResult.data().is_answer;
const timestamp = answerqueryResult.data().timestamp;
const question_owner_data = db.collection("Users").doc(question_owner_id).get();
const answer_owner_data = db.collection("Users").doc(answered_user_id).get();
let question_tokens, answer_tokens; // The array containing all the user's tokens.
return Promise.all([question_owner_data, answer_owner_data]).then(result=>{
const question_poster_name = result[0].data().name;
const question_poster_token = result[0].data().token_ids;
const question_poster_image = result[0].data().image;
const answer_poster_name = result[1].data().name;
const answer_poster_token = result[1].data().token_ids;
const answer_poster_image = result[1].data().image;
question_tokens = Object.keys(question_poster_tokens).map(function(key) {
return question_poster_tokens[key];
});
answer_tokens = Object.keys(answer_poster_tokens).map(function(key) {
return answer_poster_tokens[key];
});
if (answer_poster_token !== question_poster_token)
{
if (is_answer === "yes") {
const payload={
data:{
question_timestamp:question_timestamp,
channel:"Forum",
timestamp:timestamp,
question_id:question_id,
title:"Forum",
notification_type:"forum",
channel_name:"Hify Forum",
from_image:question_poster_image,
body:question_poster_name + " marked your answer correct for the question \"" + question + "\"",
click_action:"com.althera.zappi.TARGET_FORUM"
}
};
return admin.messaging().sendToDevice(answer_tokens, payload).then(response=>{
// For each message check if there was an error.
let tokensToRemove = [];
response.results.forEach((result, index) => {
const error = result.error;
if (error) {
console.error('Failure sending Marked As Answer Forum notification to', answer_tokens[index], error);
// Cleanup the tokens who are not registered anymore.
if (error.code === 'messaging/invalid-registration-token' ||
error.code === 'messaging/registration-token-not-registered') {
tokensToRemove.push( toRef.update({token_ids: db.FieldValue.arrayRemove(answer_tokens[index])}) );
}
}
else {
console.log("Successfully sent Marked As Answer Forum notification: ", answer_tokens[index], response);
}
});
});
}
else {
const payload={
data:{
question_timestamp:question_timestamp,
channel:"Forum",
timestamp:timestamp,
question_id:question_id,
title:"Forum",
notification_type:"forum",
channel_name:"Hify Forum",
from_image:answer_poster_image,
body:answer_poster_name + " answered to your question \"" + question + "\"",
click_action:"com.althera.zappi.TARGET_FORUM"
}
};
return admin.messaging().sendToDevice(question_tokens, payload).then(response=>{
// For each message check if there was an error.
let tokensToRemove = [];
response.results.forEach((result, index) => {
const error = result.error;
if (error) {
console.error('Failure sending Marked As Answer Forum notification to', question_tokens[index], error);
// Cleanup the tokens who are not registered anymore.
if (error.code === 'messaging/invalid-registration-token' ||
error.code === 'messaging/registration-token-not-registered') {
tokensToRemove.push( toRef.update({token_ids: db.FieldValue.arrayRemove(question_tokens[index])}) );
}
}
else {
console.log("Successfully sent Answer Forum notification: ", question_tokens[index], response);
}
});
});
}
}
});
});
});
});
在此链接中，您可以看到我的问题。我已经解决了数字2和3，但是我无法解决其余的问题。 https://drive.google.com/file/d/1zbZ6i6ZB25E9tZfduzZ2FyNW5GkcZnha/view?usp=sharing