Writing data to cloud firestore with promises












0















I'm building a timer app that saves timing sessions to cloud firestore. I would like to record each session to the firestore as a record, and then any splits during the timing session as child elements of this session.



const db = firebase.firestore();
const settings = {timestampsInSnapshots: true};
db.settings(settings);
const sessionsRef = db.collection("sessions")
const user = firebase.auth().currentUser;


The first write is initiated in the startStop() function:



startStop() {
const status = this.state.running;

if(!this.state.sessionRef) //first time starting timer, record new database entry
{
console.log("writing session to cloudstore")
const user = firebase.auth().currentUser;

const sessionRef = sessionsRef.add({
start_time: firebase.firestore.FieldValue.serverTimestamp(),
user: user.uid,
goal: this.state.goal,
}).then( () =>{
console.log("Write successful");
console.log(sessionRef)
this.setState({sessionRef: sessionRef});
return sessionRef;
}
);
}
else //need log split in firebase
{
const sessionRef = this.state.sessionRef
console.log(sessionRef.id)
const action = (this.state.running ? "stop":"start");

const splitRef = sessionsRef.doc(sessionRef.id).push({
split_time: firebase.firestore.FieldValue.serverTimestamp(),
action: action
})
}


The problem happens when pressing the split button that calls the stopStop() function after the timer starts running. In this case, the following error:



FirebaseError: Function CollectionReference.doc() requires its first argument to be of type non-empty string, but it was: undefined



I think this must have something to do with the promise in the first write call not being properly resolved, but I haven't figured out how to do this from reading lots of references and documentation.










share|improve this question



























    0















    I'm building a timer app that saves timing sessions to cloud firestore. I would like to record each session to the firestore as a record, and then any splits during the timing session as child elements of this session.



    const db = firebase.firestore();
    const settings = {timestampsInSnapshots: true};
    db.settings(settings);
    const sessionsRef = db.collection("sessions")
    const user = firebase.auth().currentUser;


    The first write is initiated in the startStop() function:



    startStop() {
    const status = this.state.running;

    if(!this.state.sessionRef) //first time starting timer, record new database entry
    {
    console.log("writing session to cloudstore")
    const user = firebase.auth().currentUser;

    const sessionRef = sessionsRef.add({
    start_time: firebase.firestore.FieldValue.serverTimestamp(),
    user: user.uid,
    goal: this.state.goal,
    }).then( () =>{
    console.log("Write successful");
    console.log(sessionRef)
    this.setState({sessionRef: sessionRef});
    return sessionRef;
    }
    );
    }
    else //need log split in firebase
    {
    const sessionRef = this.state.sessionRef
    console.log(sessionRef.id)
    const action = (this.state.running ? "stop":"start");

    const splitRef = sessionsRef.doc(sessionRef.id).push({
    split_time: firebase.firestore.FieldValue.serverTimestamp(),
    action: action
    })
    }


    The problem happens when pressing the split button that calls the stopStop() function after the timer starts running. In this case, the following error:



    FirebaseError: Function CollectionReference.doc() requires its first argument to be of type non-empty string, but it was: undefined



    I think this must have something to do with the promise in the first write call not being properly resolved, but I haven't figured out how to do this from reading lots of references and documentation.










    share|improve this question

























      0












      0








      0








      I'm building a timer app that saves timing sessions to cloud firestore. I would like to record each session to the firestore as a record, and then any splits during the timing session as child elements of this session.



      const db = firebase.firestore();
      const settings = {timestampsInSnapshots: true};
      db.settings(settings);
      const sessionsRef = db.collection("sessions")
      const user = firebase.auth().currentUser;


      The first write is initiated in the startStop() function:



      startStop() {
      const status = this.state.running;

      if(!this.state.sessionRef) //first time starting timer, record new database entry
      {
      console.log("writing session to cloudstore")
      const user = firebase.auth().currentUser;

      const sessionRef = sessionsRef.add({
      start_time: firebase.firestore.FieldValue.serverTimestamp(),
      user: user.uid,
      goal: this.state.goal,
      }).then( () =>{
      console.log("Write successful");
      console.log(sessionRef)
      this.setState({sessionRef: sessionRef});
      return sessionRef;
      }
      );
      }
      else //need log split in firebase
      {
      const sessionRef = this.state.sessionRef
      console.log(sessionRef.id)
      const action = (this.state.running ? "stop":"start");

      const splitRef = sessionsRef.doc(sessionRef.id).push({
      split_time: firebase.firestore.FieldValue.serverTimestamp(),
      action: action
      })
      }


      The problem happens when pressing the split button that calls the stopStop() function after the timer starts running. In this case, the following error:



      FirebaseError: Function CollectionReference.doc() requires its first argument to be of type non-empty string, but it was: undefined



      I think this must have something to do with the promise in the first write call not being properly resolved, but I haven't figured out how to do this from reading lots of references and documentation.










      share|improve this question














      I'm building a timer app that saves timing sessions to cloud firestore. I would like to record each session to the firestore as a record, and then any splits during the timing session as child elements of this session.



      const db = firebase.firestore();
      const settings = {timestampsInSnapshots: true};
      db.settings(settings);
      const sessionsRef = db.collection("sessions")
      const user = firebase.auth().currentUser;


      The first write is initiated in the startStop() function:



      startStop() {
      const status = this.state.running;

      if(!this.state.sessionRef) //first time starting timer, record new database entry
      {
      console.log("writing session to cloudstore")
      const user = firebase.auth().currentUser;

      const sessionRef = sessionsRef.add({
      start_time: firebase.firestore.FieldValue.serverTimestamp(),
      user: user.uid,
      goal: this.state.goal,
      }).then( () =>{
      console.log("Write successful");
      console.log(sessionRef)
      this.setState({sessionRef: sessionRef});
      return sessionRef;
      }
      );
      }
      else //need log split in firebase
      {
      const sessionRef = this.state.sessionRef
      console.log(sessionRef.id)
      const action = (this.state.running ? "stop":"start");

      const splitRef = sessionsRef.doc(sessionRef.id).push({
      split_time: firebase.firestore.FieldValue.serverTimestamp(),
      action: action
      })
      }


      The problem happens when pressing the split button that calls the stopStop() function after the timer starts running. In this case, the following error:



      FirebaseError: Function CollectionReference.doc() requires its first argument to be of type non-empty string, but it was: undefined



      I think this must have something to do with the promise in the first write call not being properly resolved, but I haven't figured out how to do this from reading lots of references and documentation.







      reactjs firebase google-cloud-firestore






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      asked Jan 18 at 23:32









      occam98occam98

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