Query firestore database for document id

Question

I want to query a firestore database for document id. Currently I have the following code:

db.collection(\'books\').where(\'id\', \'==\', \'fK3ddutEpD2qQqRMX         


        

Answer 1

From Firestore docs for Get a document.

var docRef = db.collection("cities").doc("SF");

docRef.get().then(function(doc) {
    if (doc.exists) {
        console.log("Document data:", doc.data());
    } else {
        // doc.data() will be undefined in this case
        console.log("No such document!");
    }
}).catch(function(error) {
    console.log("Error getting document:", error);
});