When I use Promise with dialogflow library in server - get Error












1















I try to execute this code on Firebase Cloud Functions



const functions = require('firebase-functions');
const admin = require('firebase-admin');
const firebase_database = require('./conf/firebase');
const { WebhookClient } = require('dialogflow-fulfillment');

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
function searcheColleagueByName(agent){
var lastname = agent.parameters.lastname;
firebase_database.ref().once('value')
.then(team => {
agent.add("some name " + lastname);
})
.catch(err=>{
agent.add("something wrong");
})
}


and after when i make request to my bot from telegram I get error in firebase console:



Error: No responses defined for platform: null
at V2Agent.sendResponses_ (/srv/node_modules/dialogflow-fulfillment/src/v2-agent.js:243:13)
at WebhookClient.send_ (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:505:17)
at promise.then (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:316:38)
at <anonymous>
at process._tickDomainCallback (internal/process/next_tick.js:228:7)


What's wrong? why when I use promisse my agent can't give me an answer?










share|improve this question

























  • You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

    – trincot
    Nov 19 '18 at 20:28


















1















I try to execute this code on Firebase Cloud Functions



const functions = require('firebase-functions');
const admin = require('firebase-admin');
const firebase_database = require('./conf/firebase');
const { WebhookClient } = require('dialogflow-fulfillment');

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
function searcheColleagueByName(agent){
var lastname = agent.parameters.lastname;
firebase_database.ref().once('value')
.then(team => {
agent.add("some name " + lastname);
})
.catch(err=>{
agent.add("something wrong");
})
}


and after when i make request to my bot from telegram I get error in firebase console:



Error: No responses defined for platform: null
at V2Agent.sendResponses_ (/srv/node_modules/dialogflow-fulfillment/src/v2-agent.js:243:13)
at WebhookClient.send_ (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:505:17)
at promise.then (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:316:38)
at <anonymous>
at process._tickDomainCallback (internal/process/next_tick.js:228:7)


What's wrong? why when I use promisse my agent can't give me an answer?










share|improve this question

























  • You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

    – trincot
    Nov 19 '18 at 20:28
















1












1








1








I try to execute this code on Firebase Cloud Functions



const functions = require('firebase-functions');
const admin = require('firebase-admin');
const firebase_database = require('./conf/firebase');
const { WebhookClient } = require('dialogflow-fulfillment');

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
function searcheColleagueByName(agent){
var lastname = agent.parameters.lastname;
firebase_database.ref().once('value')
.then(team => {
agent.add("some name " + lastname);
})
.catch(err=>{
agent.add("something wrong");
})
}


and after when i make request to my bot from telegram I get error in firebase console:



Error: No responses defined for platform: null
at V2Agent.sendResponses_ (/srv/node_modules/dialogflow-fulfillment/src/v2-agent.js:243:13)
at WebhookClient.send_ (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:505:17)
at promise.then (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:316:38)
at <anonymous>
at process._tickDomainCallback (internal/process/next_tick.js:228:7)


What's wrong? why when I use promisse my agent can't give me an answer?










share|improve this question
















I try to execute this code on Firebase Cloud Functions



const functions = require('firebase-functions');
const admin = require('firebase-admin');
const firebase_database = require('./conf/firebase');
const { WebhookClient } = require('dialogflow-fulfillment');

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
function searcheColleagueByName(agent){
var lastname = agent.parameters.lastname;
firebase_database.ref().once('value')
.then(team => {
agent.add("some name " + lastname);
})
.catch(err=>{
agent.add("something wrong");
})
}


and after when i make request to my bot from telegram I get error in firebase console:



Error: No responses defined for platform: null
at V2Agent.sendResponses_ (/srv/node_modules/dialogflow-fulfillment/src/v2-agent.js:243:13)
at WebhookClient.send_ (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:505:17)
at promise.then (/srv/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:316:38)
at <anonymous>
at process._tickDomainCallback (internal/process/next_tick.js:228:7)


What's wrong? why when I use promisse my agent can't give me an answer?







javascript firebase-realtime-database dialogflow google-assistant-sdk






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edited Nov 19 '18 at 21:45









Prisoner

34.7k33258




34.7k33258










asked Nov 19 '18 at 20:16









missing17missing17

298




298













  • You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

    – trincot
    Nov 19 '18 at 20:28





















  • You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

    – trincot
    Nov 19 '18 at 20:28



















You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

– trincot
Nov 19 '18 at 20:28







You only define a function in the body of the onRequest callback; you don't do or return anything. NB: where would you get the value of agent from? Also, your code has more opening parentheses and braces than closing ones. Please take care of indenting you code properly.

– trincot
Nov 19 '18 at 20:28














1 Answer
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The problem is that, if you're using an async function, then your intent handler must also return a Promise. It isn't enough that you send the reply as part of the then() clause, you must also return the Promise that the then() is part of.



In your case, this looks fairly easy. In the searchColleagueByName() function, you would return then once().then().catch() result, which is a Promise. (Since then() and catch() return a Promise.)



So it might look something like this:



   return firebase_database.ref().once('value')
.then(team => {
agent.add("some name " + lastname);
})
.catch(err=>{
agent.add("something wrong");
})





share|improve this answer























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    The problem is that, if you're using an async function, then your intent handler must also return a Promise. It isn't enough that you send the reply as part of the then() clause, you must also return the Promise that the then() is part of.



    In your case, this looks fairly easy. In the searchColleagueByName() function, you would return then once().then().catch() result, which is a Promise. (Since then() and catch() return a Promise.)



    So it might look something like this:



       return firebase_database.ref().once('value')
    .then(team => {
    agent.add("some name " + lastname);
    })
    .catch(err=>{
    agent.add("something wrong");
    })





    share|improve this answer




























      0














      The problem is that, if you're using an async function, then your intent handler must also return a Promise. It isn't enough that you send the reply as part of the then() clause, you must also return the Promise that the then() is part of.



      In your case, this looks fairly easy. In the searchColleagueByName() function, you would return then once().then().catch() result, which is a Promise. (Since then() and catch() return a Promise.)



      So it might look something like this:



         return firebase_database.ref().once('value')
      .then(team => {
      agent.add("some name " + lastname);
      })
      .catch(err=>{
      agent.add("something wrong");
      })





      share|improve this answer


























        0












        0








        0







        The problem is that, if you're using an async function, then your intent handler must also return a Promise. It isn't enough that you send the reply as part of the then() clause, you must also return the Promise that the then() is part of.



        In your case, this looks fairly easy. In the searchColleagueByName() function, you would return then once().then().catch() result, which is a Promise. (Since then() and catch() return a Promise.)



        So it might look something like this:



           return firebase_database.ref().once('value')
        .then(team => {
        agent.add("some name " + lastname);
        })
        .catch(err=>{
        agent.add("something wrong");
        })





        share|improve this answer













        The problem is that, if you're using an async function, then your intent handler must also return a Promise. It isn't enough that you send the reply as part of the then() clause, you must also return the Promise that the then() is part of.



        In your case, this looks fairly easy. In the searchColleagueByName() function, you would return then once().then().catch() result, which is a Promise. (Since then() and catch() return a Promise.)



        So it might look something like this:



           return firebase_database.ref().once('value')
        .then(team => {
        agent.add("some name " + lastname);
        })
        .catch(err=>{
        agent.add("something wrong");
        })






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 19 '18 at 21:02









        PrisonerPrisoner

        34.7k33258




        34.7k33258
































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