I'd like to set a value on Firebase database to True just for a certain amount of time












0















I can't figure out how to change a value of Firebase database and then change it back after a certain amount of time(30 min), doing everything on the server side and not by the actual device date.



I'm assuming i need Firebase functions.



In case i can't do it, is there any other way keeping Firebase as main Database?



I don't really need any code but just the logic behind it.










share|improve this question





























    0















    I can't figure out how to change a value of Firebase database and then change it back after a certain amount of time(30 min), doing everything on the server side and not by the actual device date.



    I'm assuming i need Firebase functions.



    In case i can't do it, is there any other way keeping Firebase as main Database?



    I don't really need any code but just the logic behind it.










    share|improve this question



























      0












      0








      0








      I can't figure out how to change a value of Firebase database and then change it back after a certain amount of time(30 min), doing everything on the server side and not by the actual device date.



      I'm assuming i need Firebase functions.



      In case i can't do it, is there any other way keeping Firebase as main Database?



      I don't really need any code but just the logic behind it.










      share|improve this question
















      I can't figure out how to change a value of Firebase database and then change it back after a certain amount of time(30 min), doing everything on the server side and not by the actual device date.



      I'm assuming i need Firebase functions.



      In case i can't do it, is there any other way keeping Firebase as main Database?



      I don't really need any code but just the logic behind it.







      firebase mobile firebase-realtime-database






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 20 '18 at 14:05









      KENdi

      5,8192821




      5,8192821










      asked Nov 20 '18 at 12:57









      EndlessNerdsEndlessNerds

      33




      33
























          2 Answers
          2






          active

          oldest

          votes


















          0














          There is no logic in the Firebase Realtime Database to automatically change a value after a certain amount of time. You'll typically run such code in Cloud Functions, or in the apps in your client devices.



          In both cases you can keep using the Firebase Realtime Database, as you'll just be interacting with that. From Cloud Functions you'll do that through the Admin SDK.



          It's a few steps:




          1. Create a Cloud Function that queries the database to find expired items, and changes the value on them. This code uses the Admin SDK for Node.js, but is very similar to what you'd otherwise run in a web client.


          2. Tie that Cloud Function to a cron job that runs every minute or so (depending on how accurate you want the time-out to be). For some options, see Cloud Functions for Firebase trigger on time?



          I recommend you also check out these similar questions:




          • Delete firebase data older than 2 hours


          • How to delete firebase data after "n" days (doing the same from an Android client)

          • How to purge old content in firebase realtime database






          share|improve this answer































            0














            I would question your data model. Instead of using a boolean, you may want to consider using a timestamp.



            For example, if your data model is currently something along the lines of:



            Permissions
            - user_id
            - is_allowed (boolean)


            You may want to use this instead:



            Permissions
            - user_id
            - allow_until (timestamp)


            You application code can then just check if the current time is earlier than the allow_until timestamp.






            share|improve this answer























              Your Answer






              StackExchange.ifUsing("editor", function () {
              StackExchange.using("externalEditor", function () {
              StackExchange.using("snippets", function () {
              StackExchange.snippets.init();
              });
              });
              }, "code-snippets");

              StackExchange.ready(function() {
              var channelOptions = {
              tags: "".split(" "),
              id: "1"
              };
              initTagRenderer("".split(" "), "".split(" "), channelOptions);

              StackExchange.using("externalEditor", function() {
              // Have to fire editor after snippets, if snippets enabled
              if (StackExchange.settings.snippets.snippetsEnabled) {
              StackExchange.using("snippets", function() {
              createEditor();
              });
              }
              else {
              createEditor();
              }
              });

              function createEditor() {
              StackExchange.prepareEditor({
              heartbeatType: 'answer',
              autoActivateHeartbeat: false,
              convertImagesToLinks: true,
              noModals: true,
              showLowRepImageUploadWarning: true,
              reputationToPostImages: 10,
              bindNavPrevention: true,
              postfix: "",
              imageUploader: {
              brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
              contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
              allowUrls: true
              },
              onDemand: true,
              discardSelector: ".discard-answer"
              ,immediatelyShowMarkdownHelp:true
              });


              }
              });














              draft saved

              draft discarded


















              StackExchange.ready(
              function () {
              StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53393502%2fid-like-to-set-a-value-on-firebase-database-to-true-just-for-a-certain-amount-o%23new-answer', 'question_page');
              }
              );

              Post as a guest















              Required, but never shown

























              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              0














              There is no logic in the Firebase Realtime Database to automatically change a value after a certain amount of time. You'll typically run such code in Cloud Functions, or in the apps in your client devices.



              In both cases you can keep using the Firebase Realtime Database, as you'll just be interacting with that. From Cloud Functions you'll do that through the Admin SDK.



              It's a few steps:




              1. Create a Cloud Function that queries the database to find expired items, and changes the value on them. This code uses the Admin SDK for Node.js, but is very similar to what you'd otherwise run in a web client.


              2. Tie that Cloud Function to a cron job that runs every minute or so (depending on how accurate you want the time-out to be). For some options, see Cloud Functions for Firebase trigger on time?



              I recommend you also check out these similar questions:




              • Delete firebase data older than 2 hours


              • How to delete firebase data after "n" days (doing the same from an Android client)

              • How to purge old content in firebase realtime database






              share|improve this answer




























                0














                There is no logic in the Firebase Realtime Database to automatically change a value after a certain amount of time. You'll typically run such code in Cloud Functions, or in the apps in your client devices.



                In both cases you can keep using the Firebase Realtime Database, as you'll just be interacting with that. From Cloud Functions you'll do that through the Admin SDK.



                It's a few steps:




                1. Create a Cloud Function that queries the database to find expired items, and changes the value on them. This code uses the Admin SDK for Node.js, but is very similar to what you'd otherwise run in a web client.


                2. Tie that Cloud Function to a cron job that runs every minute or so (depending on how accurate you want the time-out to be). For some options, see Cloud Functions for Firebase trigger on time?



                I recommend you also check out these similar questions:




                • Delete firebase data older than 2 hours


                • How to delete firebase data after "n" days (doing the same from an Android client)

                • How to purge old content in firebase realtime database






                share|improve this answer


























                  0












                  0








                  0







                  There is no logic in the Firebase Realtime Database to automatically change a value after a certain amount of time. You'll typically run such code in Cloud Functions, or in the apps in your client devices.



                  In both cases you can keep using the Firebase Realtime Database, as you'll just be interacting with that. From Cloud Functions you'll do that through the Admin SDK.



                  It's a few steps:




                  1. Create a Cloud Function that queries the database to find expired items, and changes the value on them. This code uses the Admin SDK for Node.js, but is very similar to what you'd otherwise run in a web client.


                  2. Tie that Cloud Function to a cron job that runs every minute or so (depending on how accurate you want the time-out to be). For some options, see Cloud Functions for Firebase trigger on time?



                  I recommend you also check out these similar questions:




                  • Delete firebase data older than 2 hours


                  • How to delete firebase data after "n" days (doing the same from an Android client)

                  • How to purge old content in firebase realtime database






                  share|improve this answer













                  There is no logic in the Firebase Realtime Database to automatically change a value after a certain amount of time. You'll typically run such code in Cloud Functions, or in the apps in your client devices.



                  In both cases you can keep using the Firebase Realtime Database, as you'll just be interacting with that. From Cloud Functions you'll do that through the Admin SDK.



                  It's a few steps:




                  1. Create a Cloud Function that queries the database to find expired items, and changes the value on them. This code uses the Admin SDK for Node.js, but is very similar to what you'd otherwise run in a web client.


                  2. Tie that Cloud Function to a cron job that runs every minute or so (depending on how accurate you want the time-out to be). For some options, see Cloud Functions for Firebase trigger on time?



                  I recommend you also check out these similar questions:




                  • Delete firebase data older than 2 hours


                  • How to delete firebase data after "n" days (doing the same from an Android client)

                  • How to purge old content in firebase realtime database







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 20 '18 at 14:16









                  Frank van PuffelenFrank van Puffelen

                  238k29382408




                  238k29382408

























                      0














                      I would question your data model. Instead of using a boolean, you may want to consider using a timestamp.



                      For example, if your data model is currently something along the lines of:



                      Permissions
                      - user_id
                      - is_allowed (boolean)


                      You may want to use this instead:



                      Permissions
                      - user_id
                      - allow_until (timestamp)


                      You application code can then just check if the current time is earlier than the allow_until timestamp.






                      share|improve this answer




























                        0














                        I would question your data model. Instead of using a boolean, you may want to consider using a timestamp.



                        For example, if your data model is currently something along the lines of:



                        Permissions
                        - user_id
                        - is_allowed (boolean)


                        You may want to use this instead:



                        Permissions
                        - user_id
                        - allow_until (timestamp)


                        You application code can then just check if the current time is earlier than the allow_until timestamp.






                        share|improve this answer


























                          0












                          0








                          0







                          I would question your data model. Instead of using a boolean, you may want to consider using a timestamp.



                          For example, if your data model is currently something along the lines of:



                          Permissions
                          - user_id
                          - is_allowed (boolean)


                          You may want to use this instead:



                          Permissions
                          - user_id
                          - allow_until (timestamp)


                          You application code can then just check if the current time is earlier than the allow_until timestamp.






                          share|improve this answer













                          I would question your data model. Instead of using a boolean, you may want to consider using a timestamp.



                          For example, if your data model is currently something along the lines of:



                          Permissions
                          - user_id
                          - is_allowed (boolean)


                          You may want to use this instead:



                          Permissions
                          - user_id
                          - allow_until (timestamp)


                          You application code can then just check if the current time is earlier than the allow_until timestamp.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Nov 20 '18 at 15:23









                          Ben NolandBen Noland

                          21.7k144247




                          21.7k144247






























                              draft saved

                              draft discarded




















































                              Thanks for contributing an answer to Stack Overflow!


                              • Please be sure to answer the question. Provide details and share your research!

                              But avoid



                              • Asking for help, clarification, or responding to other answers.

                              • Making statements based on opinion; back them up with references or personal experience.


                              To learn more, see our tips on writing great answers.




                              draft saved


                              draft discarded














                              StackExchange.ready(
                              function () {
                              StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53393502%2fid-like-to-set-a-value-on-firebase-database-to-true-just-for-a-certain-amount-o%23new-answer', 'question_page');
                              }
                              );

                              Post as a guest















                              Required, but never shown





















































                              Required, but never shown














                              Required, but never shown












                              Required, but never shown







                              Required, but never shown

































                              Required, but never shown














                              Required, but never shown












                              Required, but never shown







                              Required, but never shown







                              這個網誌中的熱門文章

                              Academy of Television Arts & Sciences

                              L'Équipe

                              1995 France bombings