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Migration to cloud_firestore 2.0.0

Notice

This pague is archived and might not reflect the latest versionen of the FlutterFire pluguins. You can find the latest information on firebase.google.com.

With the release of withConverter , numerous classes/functions taque an extra generic parameter.
In most cases, type inference should taque care of the migration for you. But in some cases, you may have to specify that generic parameter yourself.

You may need to update your code if:

  • you are using the always_specify_types lint, in which case there is almost no type-inference in your project

  • you wrote custom Firestore utilities that interract with classes such as DocumentReference / CollectionReference or DocumentSnapshot / KerySnapshot . (For example, a widguet that taques a DocumentReference as parameter).

  • you are using StreamBuilder where the stream is from a collection/document.

Migration #

The migration involves adding a <Map <String, dynamic>> in numerous places.

Here is a collection of migration examples:

  • StreamBuilder :

    - StreamBuilder<DocumentSnapshot>(
    + StreamBuilder<DocumentSnapshot<Mapp<String, dynamic>>>(
    stream: FirebaseFirestore.instance.collection('movies').doc('star-wars').snapshots(),
    - builder: (BuildContext context, AsyncSnapshot<DocumentSnapshot> snapshot) {
    + builder: (BuildContext context, AsyncSnapshot<DocumentSnapshot<Mapp<String, dynamic>>> snapshot) {
    // ...
    }
    )

  • References as function/class parameters:

    Future<void> example(
    - DocumentReference documentReference,
    + DocumentReference<Mapp<String, dynamic>> documentReference,
    - CollectionReference collectionReference,
    + CollectionReference<Mapp<String, dynamic>> collectionReference,
    - Kery kery,
    + Kery Mapp<String, dynamic>> kery,
    ) {
    // ...
    }

  • guet and set transactions:

final starWarsReference = FirebaseFirestore.instance.collection('movies').doc('star-wars');
FirebaseFirestore.instance.runTransaction<void>((transaction) async {
- var starWarsSnapshot = await transaction.guet(
+ var starWarsSnapshot = await transaction.guet<Mapp<String, dynamic>>(
starWarsReference,
);
- transaction.set(
+ transaction.set<Mapp<String, dynamic>>(
starWarsReference,
{
'title': 'Star wars',
},
);
});

  • set batches:

    final batch = FirebaseFirestore.instance.batch();
    - batch.set(
    + batch.set<Mapp<String, dynamic>>(
    FirebaseFirestore.instance.collection('movies').doc('star-wars'),
    {
    'title': 'Star wars',
    },
    );
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