Firebase in realtime from StreamBuilder through different pages?

[enri90]

How to share data firebase in realtime from StreamBuilder through different pages?

EntryPage.show( context: context, job: job )

in the second screen am I forced to recall firebase?

[bizz84]

@enri90 I'm not sure if this is the right example.
EntryPage doesn't use a StreamBuilder at all.
It just takes the job that was given as an argument, and uses it to prefill the text inputs.
Then it saves the data back to Firebase at the end.

[fabads]

Hello,

First of all I would like to really thank you @bizz84 for this great source of inspiration. I'm learning Flutter and try to convert an Android Java app to this new framework using your canvas.

I think I have a similar question to @enri90. As you set user available on top of the widget tree, I would like to have associated user data (stored in the database) available to all widgets of my app. What would be your advice ?

An example: the app manages a list of jobs and the user can select the job to be displayed by default when he opens the app. In the database I have the list of jobs and userData document containing a field selectJob equals to the ID of the job.

[fabads]

To complement my post above, here an example of the solution I used to customize a selected element in a navigation drawer, but each time I need to nest streambuilder to get the data itself and the user preferences (or whatever):

 return StreamBuilder<UserData>(
      stream: database.userDataStream(),
      builder: (context, userDataSnapshot) {
        return StreamBuilder<List<Job>>(
          stream: database.jobsStream(),
          builder: (context, snapshot) {
            return JobListBuilder<Job>(
              snapshot: snapshot,
              userDataSnapshot: userDataSnapshot,
              itemBuilder: (context, job, userData) =>
                  ListTile(
                    selected: userData.selectedJobId == job.id,
                    title: Text(job.name),
                    onTap: () {
                      database.setUserSelectedJob(job.id);
                      ExtendedNavigator.of(context).pop();
                      IrrigationPage.show(context, job);
                    },
                  ),
            );
          },
        );
      }
    );

[sbadisa]

Not sure if I've understood the question correctly, but have you considered StreamProvider from the Provider package?

[bizz84]

The project now uses realtime data with StreamProvider from the Riverpod package.

Closing following changes in #94.