Agent unable to print all results received from Axion library request in Dialogflow - node.js

Question

I'm trying to print all results received from the following request (this code not working):
function searchForProducts(agent) {
// category_name = 'Cooking' for example
const category_name = agent.parameters.category_name;
return new Promise((resolve, reject) => {
axios.get(`https://sheetdb.io/api/v1/qvlk728a5p23g/search?Categories=*${category_name}*&Status=1`).then(function (res) {
let Categories = res.data[0];
if (Categories) {
for(var i=0;i<res.data.length;i++){
agent.add(`https://alaswadtrading.com/index.php?route=product/product&product_id=${Categories.ProductID}\n\n${Categories.Name}`);
}
} else {
agent.add(`No items found in the selected category (${category_name})`);
}
resolve();
});
});
}
The problem I'm facing is the agent can only print on result through the following code (this record working but return only one URL):
function searchForProducts(agent) {
const category_name = agent.parameters.category_name;
return new Promise((resolve, reject) => {
axios.get(`https://sheetdb.io/api/v1/qvlk728a5p23g/search?Categories=*${category_name}*&Status=1`).then(function (res) {
let Categories = res.data[0];
if (Categories) {
agent.add(`https://alaswadtrading.com/index.php?route=product/product&product_id=${Categories.ProductID}\n\n${Categories.Name}`);
} else {
agent.add(`No items found in the selected category (${category_name})`);
}
resolve();
});
});
}
What I'm doing wrong?
============ After Applying Proposed Solution ================
Hello, since yesterday I'm testing but with no luck to get the exact problem. Here what I did:
I created new Intent which will trigger your code once "Test" received.
I have test the code using different ways, and here the result:
Category_Name = “Cooking”:
- Dialogflow Agent Test: Worked (https://imgur.com/sov6Th5).
- Web Agent Test: Not Worked (https://imgur.com/15qxgdR).
- Dialogflow Web Messenger: Worked (https://imgur.com/5ajzd2j).
- Twilio: Not Worked (https://imgur.com/fsrYtDG) and error message was (https://imgur.com/jP6TRbZ).
But, when I changed the Category_Name = “Small%20Appliances”:
- Dialogflow Agent Test: Worked (https://imgur.com/undefined).
- Web Agent Test: Worked (https://imgur.com/undefined).
- Dialogflow Web Messenger: Worked (https://imgur.com/rCn8ksT).
- Twilio: Worked (https://imgur.com/kfXGqTf).
Here a link for web test (I will keep Category_name=’Cooking’) so you can see the result:
https://bot.dialogflow.com/004077c2-d426-472c-89f0-4997e2955d59
What do you think?

Answer 1

Using your code above I was able to loop through agent.add() and got the results. I used test as user input that matches intent "test intent".
Here is a snippet of the 29 similar outputs of your code provided:
Here is the full code:
index.js
'use strict';
const functions = require('firebase-functions');
const {WebhookClient} = require('dialogflow-fulfillment');
const {Card, Suggestion} = require('dialogflow-fulfillment');
const axios = require('axios');
process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
const agent = new WebhookClient({ request, response });
function yourFunctionHandler(agent) {
const category_name = 'Cooking';
return new Promise((resolve, reject) => {
axios.get(`https://sheetdb.io/api/v1/qvlk728a5p23g/search?Categories=*${category_name}*&Status=1`).then(function (res) {
console.log(res.data);
let Categories = res.data[0];
if (Categories) {
for(var i=0;i<res.data.length;i++){
agent.add(`https://alaswadtrading.com/index.php?route=product/product&product_id=${Categories.ProductID}\n\n${Categories.Name}`);
}
} else {
agent.add(`No items found in the selected category (${category_name})`);
}
resolve();
});
});
}
// Run the proper function handler based on the matched Dialogflow intent name
let intentMap = new Map();
intentMap.set('test intent', yourFunctionHandler);
agent.handleRequest(intentMap);
});
package.json
{
"name": "dialogflowFirebaseFulfillment",
"description": "This is the default fulfillment for a Dialogflow agents using Cloud Functions for Firebase",
"version": "0.0.1",
"private": true,
"license": "Apache Version 2.0",
"author": "Google Inc.",
"engines": {
"node": "10"
},
"scripts": {
"start": "firebase serve --only functions:dialogflowFirebaseFulfillment",
"deploy": "firebase deploy --only functions:dialogflowFirebaseFulfillment"
},
"dependencies": {
"firebase-functions": "^2.0.2",
"firebase-admin": "^5.13.1",
"googleapis": "^27.0.0",
"actions-on-google": "2.2.0",
"dialogflow-fulfillment": "0.6.1",
"axios": "0.21.1"
}
}
Just a suggestion, since your objective is to show all products under a certain "category" you might want to loop through the whole res.data. In this example I just used category_name = 'Cooking' and printed all products that is under the specified category.
function yourFunctionHandler(agent) {
const category_name = 'Cooking';
return new Promise((resolve, reject) => {
axios.get(`https://sheetdb.io/api/v1/qvlk728a5p23g/search?Categories=*${category_name}*&Status=1`).then(function (res) {
let Categories = res.data;
if (Categories) {
for (const product of Categories ){
agent.add(`https://alaswadtrading.com/index.php?route=product/product&product_id=${product.ProductID}\n\n${product.Name}`);
}
} else {
agent.add(`No items found in the selected category (${category_name})`);
}
resolve();
});
});
}
This will result to: