Recently I've started working on a project based on firebase cloud functions and firestore database. I'm writing a cloud function trigger function which will query a "Collection group", on a new document being created.
Below is the cloud function code file:
exports.findDealsOnBuy = functions.firestore
.document('businessmen/{businessmenId}/buy/{buyId}')
.onCreate((snapshot, context) => {
const businessmenId = context.params.businessmenId;
const buyId = context.params.buyId;
const buy = snapshot.data();
functions.logger.info('businessmenId : ', businessmenId, ' buyId : ', buyId, ' buy : ', buy );
const sellGrpRef = admin.firestore().collectionGroup('sell');
const querySnapshot = await sellGrpRef.whereEqualTo('goodsName', '==', buy.getGoodsName())
.whereEqualTo('goodsLocation', '==', buy.getGoodsLocation())
.whereEqualTo('status', '==', 1)
.whereEqualTo('status', '==', 5)
.whereLessThanOrEqualTo('bestPrice', '<=', buy.getBestPrice())
.orderBy('bestPrice', 'desc')
.get();
if (querySnapshot.empty) {
console.log('No matching documents.');
return;
}
querySnapshot.forEach((doc) => {
console.log(doc.id, ' => ', doc.data());
});
});
But while compiling i am being thrown the below error
> C:\Users\Suman\Kamakshi\Ganesh\Burrabazar\Cloudfunctions\functions\index.js
> 31:31 error Parsing error: Unexpected token sellGrpRef
I tried a lot but I am unable to find a clue how to resolve this. Requesting help to resolve.
I am sharing now that I found the await documentation in MDN Web Doc.
To wait for a Promise, use the await operator. Within standard JavaScript code, it can only be used inside an async function.
You can use await within a function if you use the async keyword before the function definition. When you wait for a promise to settle, the function is stopped in a non-blocking manner. You get the value back if the promise is kept. The rejected value is thrown if the promise fails.