javascript - Firebase not found cloud function? -


i wanted bit testing cloud function achieve bigger goal. android developer, knowledge bit limited in case of javascript.

i trying access database firebase using cloud function.

firebase realtime database

my code access database json response in browser. 

    const functions = require('firebase-functions');      const admin = require('firebase-admin');      admin.initializeapp(functions.config().firebase);      const cors = require('cors')({origin: true});            // take text parameter passed http endpoint , insert      // realtime database under path /messages/:pushid/original      exports.addmessage = functions.https.onrequest((req, res) => {        // grab text parameter.        const original = req.query.text;        // push new message realtime database using firebase admin sdk.        admin.database().ref('/messages').push({original: original}).then(snapshot => {          // redirect 303 see other url of pushed object in firebase console.          res.redirect(303, snapshot.ref);        });      });            // listens new messages added /messages/:pushid/original , creates      // uppercase version of message /messages/:pushid/uppercase      exports.makeuppercase = functions.database.ref('/messages/{pushid}/original')          .onwrite(event => {            // grab current value of written realtime database.            const original = event.data.val();            console.log('uppercasing', event.params.pushid, original);            const uppercase = original.touppercase();            // must return promise when performing asynchronous tasks inside functions such            // writing firebase realtime database.            // setting "uppercase" sibling in realtime database returns promise.            return event.data.ref.parent.child('uppercase').set(uppercase);          });            var db = admin.database();      exports.getusermessage = functions.https.onrequest((req, res) => {      var query = firebase.database().ref("messages").orderbykey();      query.once("value")        .then(function(snapshot) {          snapshot.foreach(function(childsnapshot) {            // key "ada" first time , "alan" second time            var key = childsnapshot.key;            // childdata actual contents of child            var childdata = childsnapshot.val();        });      });        });

but getting error :

error: not handle request

these log error firebase : 

referenceerror: firebase not defined     @ exports.getusermessage.functions.https.onrequest (/user_code/index.js:34:49)     @ cloudfunction (/user_code/node_modules/firebase-functions/lib/providers/https.js:26:47)     @ /var/tmp/worker/worker.js:635:7     @ /var/tmp/worker/worker.js:619:9     @ _combinedtickcallback (internal/process/next_tick.js:73:7)     @ process._tickdomaincallback (internal/process/next_tick.js:128:9)

package.json script

{   "name": "functions",   "description": "cloud functions firebase",   "dependencies": {     "cors": "^2.8.1",     "firebase-admin": "~4.2.1",     "firebase-functions": "^0.5.7"    },   "private": true }

here there issue is:

var query = firebase.database().ref("messages").orderbykey();

should 

db.ref("messages").orderbykey();

the firebase you're using in line not defined in cloud functions firebase. if want query database, have reference using admin sdk:

var db = admin.database();

Comments

Post a Comment

Popular posts from this blog

php - Vagrant up error - Uncaught Reflection Exception: Class DOMDocument does not exist -

i've set bento/ubuntu-16.04 vagrant box using php 5.6, , getting following error quite few times when try , run shell script: "uncaught reflection exception: class domdocument not exist". i've tried adding following top of script (not together), each no success: "sudo apt-get install php5.6-xml", "sudo apt-get install php5-xml", "sudo apt-get install php-dom" i've tried resetting server "sudo service apache2 restart". does have suggestions?
Read more

vue.js - Create hooks for automated testing -

Image
qa guys complained can't automate frontend testing. because our html looks same outside. lazy hack did this <template> <div :role="$options.name"> ... </div> </template> <script> export default { name: 'vmcomponentname' } </script> which takes name script , applies html. in browser get: <div role="vmcomponentname"> ... </div> line :role="$options.name" goes in every component. is there dry er solutions? please share. additional details i'll explain in details looking for. imagine have vmusercreate form creates user. test case can create user . to automatically test without role, have use following selector: .wrapper > .wrapper > .wrapper > .submit-button the test extremely brittle (will break lot). if use roles can use [role="vmusercreateform"] .submit-button selector. many folds less brittle. so basically, i'm ...
Read more

Add new key value to json node in java -

i have json file : { "id":1, "name":"abc", "addressdetails": { "city":"newyork" } } i wanted add 1 more key-value ("pincode" : "414141") node 'addressdetails'. i tried using : objectmapper mapper = new objectmapper(); jsonnode root = mapper.readtree(new file("d://test.json")); objectnode node = mapper.createobjectnode(); node.with("addressdetails").put("pincode", "414141"); but it's not getting added, there way can ? you can try you should modify file path objectmapper mapper = new objectmapper(); objectnode nodes = mapper.readvalue(new file("d:\\test.txt"), objectnode.class); nodes.with("addressdetails").put("pincode", "414141"); mapper.writer().writevalue(new file("d:\\test.txt"), nodes);
Read more