Find out which firestore batch action failed and what data was written to db?












1















I have a function to create a character that has 2 writes to firestore to create character and create username (I create username to then check if it already exists i.e. enforcing unique usernames).



try {

  const characterPrivateRef = firestore().doc(`characters/${uid}`);

  const usernameRef = firestore().doc(`usernames/${username}`);

  firestore().batch().batch.create(characterRef, {...characterData});

  firestore().batch().batch.create(characterPrivateRef, {...usernameData});



  await firestore().batch().commit();

  // How can I get data written to each firestore document from batch 

  here?

} catch (e) {



  // How can I check what batch failed here i.e. if it was username I 

  want to show error saying something like ("Username already exists")

}





javascript firebase google-cloud-firestore







share|improve this question





























    1















    I have a function to create a character that has 2 writes to firestore to create character and create username (I create username to then check if it already exists i.e. enforcing unique usernames).



    try {
    
  const characterPrivateRef = firestore().doc(`characters/${uid}`);
    
  const usernameRef = firestore().doc(`usernames/${username}`);
    
  firestore().batch().batch.create(characterRef, {...characterData});
    
  firestore().batch().batch.create(characterPrivateRef, {...usernameData});
    

    
  await firestore().batch().commit();
    
  // How can I get data written to each firestore document from batch 
    
  here?
    
} catch (e) {
    

    
  // How can I check what batch failed here i.e. if it was username I 
    
  want to show error saying something like ("Username already exists")
    
}





    javascript firebase google-cloud-firestore







    share|improve this question



























      1












      1








      1








      I have a function to create a character that has 2 writes to firestore to create character and create username (I create username to then check if it already exists i.e. enforcing unique usernames).



      try {
      
  const characterPrivateRef = firestore().doc(`characters/${uid}`);
      
  const usernameRef = firestore().doc(`usernames/${username}`);
      
  firestore().batch().batch.create(characterRef, {...characterData});
      
  firestore().batch().batch.create(characterPrivateRef, {...usernameData});
      

      
  await firestore().batch().commit();
      
  // How can I get data written to each firestore document from batch 
      
  here?
      
} catch (e) {
      

      
  // How can I check what batch failed here i.e. if it was username I 
      
  want to show error saying something like ("Username already exists")
      
}





      javascript firebase google-cloud-firestore







      share|improve this question
















      I have a function to create a character that has 2 writes to firestore to create character and create username (I create username to then check if it already exists i.e. enforcing unique usernames).



      try {
      
  const characterPrivateRef = firestore().doc(`characters/${uid}`);
      
  const usernameRef = firestore().doc(`usernames/${username}`);
      
  firestore().batch().batch.create(characterRef, {...characterData});
      
  firestore().batch().batch.create(characterPrivateRef, {...usernameData});
      

      
  await firestore().batch().commit();
      
  // How can I get data written to each firestore document from batch 
      
  here?
      
} catch (e) {
      

      
  // How can I check what batch failed here i.e. if it was username I 
      
  want to show error saying something like ("Username already exists")
      
}





      javascript firebase google-cloud-firestore




      javascript firebase google-cloud-firestore






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 22 '18 at 15:09









      Frank van Puffelen

      238k29382408




      238k29382408










      asked Nov 22 '18 at 10:56









      IljaIlja

      10.2k50151276




      10.2k50151276
























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          If you are using a batch write, it means that you trying to write the data to the Firestore database atomic, which means that either all operations succeed or all operations fail. As far as I know, there is no way to know which one of those two operations within the batch has failed. What you can do instead, is to attach a complete listener and get the error message once the batch operation fails. If you want to know which operation fails, you should write the data separately, as two different write operations.






          share|improve this answer
























          • Is there everything alright, can I help you with other informations?

            – Alex Mamo
            Nov 23 '18 at 9:22











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          1 Answer
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          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          If you are using a batch write, it means that you trying to write the data to the Firestore database atomic, which means that either all operations succeed or all operations fail. As far as I know, there is no way to know which one of those two operations within the batch has failed. What you can do instead, is to attach a complete listener and get the error message once the batch operation fails. If you want to know which operation fails, you should write the data separately, as two different write operations.






          share|improve this answer
























          • Is there everything alright, can I help you with other informations?

            – Alex Mamo
            Nov 23 '18 at 9:22
















          2














          If you are using a batch write, it means that you trying to write the data to the Firestore database atomic, which means that either all operations succeed or all operations fail. As far as I know, there is no way to know which one of those two operations within the batch has failed. What you can do instead, is to attach a complete listener and get the error message once the batch operation fails. If you want to know which operation fails, you should write the data separately, as two different write operations.






          share|improve this answer
























          • Is there everything alright, can I help you with other informations?

            – Alex Mamo
            Nov 23 '18 at 9:22














          2












          2








          2







          If you are using a batch write, it means that you trying to write the data to the Firestore database atomic, which means that either all operations succeed or all operations fail. As far as I know, there is no way to know which one of those two operations within the batch has failed. What you can do instead, is to attach a complete listener and get the error message once the batch operation fails. If you want to know which operation fails, you should write the data separately, as two different write operations.






          share|improve this answer













          If you are using a batch write, it means that you trying to write the data to the Firestore database atomic, which means that either all operations succeed or all operations fail. As far as I know, there is no way to know which one of those two operations within the batch has failed. What you can do instead, is to attach a complete listener and get the error message once the batch operation fails. If you want to know which operation fails, you should write the data separately, as two different write operations.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 22 '18 at 11:15









          Alex MamoAlex Mamo

          44.6k82862




          44.6k82862













          • Is there everything alright, can I help you with other informations?

            – Alex Mamo
            Nov 23 '18 at 9:22



















          • Is there everything alright, can I help you with other informations?

            – Alex Mamo
            Nov 23 '18 at 9:22

















          Is there everything alright, can I help you with other informations?

          – Alex Mamo
          Nov 23 '18 at 9:22





          Is there everything alright, can I help you with other informations?

          – Alex Mamo
          Nov 23 '18 at 9:22




















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