Returning Firestore Query If Nothing Is Found In JavaScript-CodePudding

I am trying to console.log "Not Found" if a search query in Firestore isn't found. At the moment I am using the following to perform the query which looks through all documents for an email = "[email protected]".

This works fine if the document contains what I am searching for but I cant get it to console.log anything if nothing is found

db.collection("test").where('email', '==', "[email protected]").get()

        .then(function (querySnapshot) {

            querySnapshot.forEach(function (doc) {
                console.log(doc.data())
            });

        }).catch(function (error) {
            console.log("Error getting document:", error);
        });

CodePudding user response：

If no matching document is found then the empty property of the QuerySnapshot will be true:

db.collection("test").where('email', '==', "[email protected]").get().then(qSnap => {
  if (qSnap.empty) {
    console.log("Not found")
  } else {
    // proceed
  }
})