javascript - How to get a value from Firebase Database and assign it to a value in Firebase Cloud Functions? -


so i'm using firebase backend demo app, , stack quite bit, i'm hung on 1 issue, can't figure out how retrieve values database (i've got keys fine).
put, i'm sending information 1 device contains "friendly-name" of device trying reach firebase function. function code looks this:

exports.connectme = functions.https.onrequest((req, res) => {     cors(req, res, () => {     admin.database().ref('calls/' + req.body.id + '/').set({         target: req.body.target,         caller: req.body.caller,         time: req.body.time     });      const target = req.body.target;     console.log(`target: ${target}`);     const targetcall = admin.database().ref(`tokens/${target}/token`);     console.log(targetcall);     // const targetvalue = targetcall.val();     res.status(200).send("thanks call!");     });     });

the variable, targetcall correctly pointed @ db entry want reach, cannot extract value life of me. token located @ admin.database.ref required placed in http request. how value? commented out code shows variable want store in, know .val() not method of reference.
record, admin set require('firebase-admin'); earlier in code.

you close getting database query work.

take @ firebase documentation. explains how access structured data.

exports.connectme = functions.https.onrequest((req, res) => {     cors(req, res, () => {         const callref = admin.database().ref('calls/' + req.body.id + '/').set({             target: req.body.target,             caller: req.body.caller,             time: req.body.time         });          const target = req.body.target;         console.log(`target: ${target}`);          const takenref = admin.database().ref(`tokens/${target}/token`)             .once('value');          promise.all([callref, takenref])             .then(results => {                 const snapshot = results[1]; // promise of `takenref`                 console.log(snapshot.val()); // data database...                  res.status(200).send("thanks call!");             });     });     });

see updated code, i've added .once('value').then(snapshot onto query gives access data.


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