How should I do in a project which is Firebase is mandatory but there isn't any Firebase?

Question

My friend and I are doing a project. He will do the Firebase part and I will do the Front-End part.There is a problem: There isn't any Firebase.So I don't have any data. In that case what should I do?

Should I create fake datas or an Class with parameters like that:?

class Firebase_Datas{
   String name;
   String surname;
   .
   ..
   ...
   if (name == null){
    return "---";  //I assumed that arguments were given.
   .
   ..
   ...
}
}
```

What do you mean by "There isn't any Firebase"? You can set up a Firebase project in a matter of minutes (if not seconds...). Even if it is not the final/real project your front-end code will stay valid as soon as there is no DB data model changes or Storage bucket/"folders" naming. You just have to adapt the Firebase config to point to another project. — Renaud Tarnec, Jun 03 '22 at 12:33

score 1 · Accepted Answer · answered Jun 03 '22 at 13:19

Speaking in general, you should do Interface-Oriented Programming at some level, which means: talk to your partner and align what each side expects.

But your question specifically asks about models. There's no correct answer, but what I would suggest you to do is:

create the model as in your example:


    class UserModel {
      final String name;
      final String surname;
    }

use the repository pattern to shield your UI/Controller from changes in models


    abstract class UserRepository {
      Future<UserModel> getUser();
    }
    class UserFakeRepository implements UserRepository {
      @override
      Future<UserModel> getUser() {
        final result = UserModel('John', 'Doe');
      }
    }

in your UI/Controller layer you should use the repository instead of feeding the UI directly with the data:


    class _UserPageState extends State<UserPage> {
      UserModel? user;
    
      @override
      void initState() {
        _repository.getUser().then((result) =>
        setState(() {
          user = result;
        }));
      }
    }

after the Firebase part is built, you can implement a new UserRepository and change your dependency injection (meaning, stop using UserFakeRepository and use this new one):


    class UserFirebaseRepository implements UserRepository {
      @override
      Future<UserModel> getUser() {
        final result = _firebase.query(...);
      }
    }

for unit testing purposes, I advise you to create a wrapper for Firebase.instance. If you use them directly in your repositories, you'll be unable to write unit tests for your repositories.
by writing code this way, your UI layer will remain unchanged when you integrate the app with Firebase.

How should I do in a project which is Firebase is mandatory but there isn't any Firebase?

1 Answers1