Connecting a sink of BLoC with another BLoC
I am using the BLoC pattern as described at the Google IO talk.
I have a simple BLoC which is used to display a alert in the UI whenever a string is added to messageSink:
class AlertBloc
final _message = BehaviorSubject<String>();
AlertBloc()
Stream<String> get message => _message.stream;
Sink<String> get messageSink => _message.sink;
void dispose()
_message.close();
Elsewhere in the app, I have another BLoC which needs to add a string to messageSink, when a certain condition is met.
I noticed it is not a good idea to provide the whole BLoC from the Google I/O repo for the talk, and they provide advice for connecting a stream from a BLoC to another BLoC sink:
Note that we are not providing [CartBloc] to the
[ProductSquareBloc] directly, although it would be easier to
implement. BLoCs should not depend on other BLoCs (separation of
concerns). They can only communicate with each other using
streams. In this case, the [CartBloc.items] output plugs into the
[ProductSquareBloc.cartItems] input.
My question is how to connect a sink from a BLoC to another BLoC stream?
dart 
flutter asked Nov 11 '18 at 23:42
S.D.
204113
add a comment |
I am using the BLoC pattern as described at the Google IO talk.
I have a simple BLoC which is used to display a alert in the UI whenever a string is added to messageSink:
class AlertBloc
final _message = BehaviorSubject<String>();
AlertBloc()
Stream<String> get message => _message.stream;
Sink<String> get messageSink => _message.sink;
void dispose()
_message.close();
Elsewhere in the app, I have another BLoC which needs to add a string to messageSink, when a certain condition is met.
I noticed it is not a good idea to provide the whole BLoC from the Google I/O repo for the talk, and they provide advice for connecting a stream from a BLoC to another BLoC sink:
Note that we are not providing [CartBloc] to the
[ProductSquareBloc] directly, although it would be easier to
implement. BLoCs should not depend on other BLoCs (separation of
concerns). They can only communicate with each other using
streams. In this case, the [CartBloc.items] output plugs into the
[ProductSquareBloc.cartItems] input.
My question is how to connect a sink from a BLoC to another BLoC stream?
dart flutter asked Nov 11 '18 at 23:42
S.D.
204113
add a comment |
I am using the BLoC pattern as described at the Google IO talk.
I have a simple BLoC which is used to display a alert in the UI whenever a string is added to messageSink:
class AlertBloc
final _message = BehaviorSubject<String>();
AlertBloc()
Stream<String> get message => _message.stream;
Sink<String> get messageSink => _message.sink;
void dispose()
_message.close();
Elsewhere in the app, I have another BLoC which needs to add a string to messageSink, when a certain condition is met.
I noticed it is not a good idea to provide the whole BLoC from the Google I/O repo for the talk, and they provide advice for connecting a stream from a BLoC to another BLoC sink:
Note that we are not providing [CartBloc] to the
[ProductSquareBloc] directly, although it would be easier to
implement. BLoCs should not depend on other BLoCs (separation of
concerns). They can only communicate with each other using
streams. In this case, the [CartBloc.items] output plugs into the
[ProductSquareBloc.cartItems] input.
My question is how to connect a sink from a BLoC to another BLoC stream?
dart flutter asked Nov 11 '18 at 23:42
S.D.
204113
I am using the BLoC pattern as described at the Google IO talk.
I have a simple BLoC which is used to display a alert in the UI whenever a string is added to messageSink:
class AlertBloc
final _message = BehaviorSubject<String>();
AlertBloc()
Stream<String> get message => _message.stream;
Sink<String> get messageSink => _message.sink;
void dispose()
_message.close();
Elsewhere in the app, I have another BLoC which needs to add a string to messageSink, when a certain condition is met.
I noticed it is not a good idea to provide the whole BLoC from the Google I/O repo for the talk, and they provide advice for connecting a stream from a BLoC to another BLoC sink:
Note that we are not providing [CartBloc] to the
[ProductSquareBloc] directly, although it would be easier to
implement. BLoCs should not depend on other BLoCs (separation of
concerns). They can only communicate with each other using
streams. In this case, the [CartBloc.items] output plugs into the
[ProductSquareBloc.cartItems] input.
My question is how to connect a sink from a BLoC to another BLoC stream?
dart flutter dart flutter asked Nov 11 '18 at 23:42
S.D.
204113
asked Nov 11 '18 at 23:42
S.D.
204113
asked Nov 11 '18 at 23:42
S.D.
204113
asked Nov 11 '18 at 23:42
S.D.
204113
asked Nov 11 '18 at 23:42
S.D.
204113
204113
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The exact same way as you'd do with streams: Passing it as parameter
class Bloc
final Sink<int> _external;
Bloc(this._external);
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The exact same way as you'd do with streams: Passing it as parameter
class Bloc
final Sink<int> _external;
Bloc(this._external);
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
add a comment |
The exact same way as you'd do with streams: Passing it as parameter
class Bloc
final Sink<int> _external;
Bloc(this._external);
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
add a comment |
The exact same way as you'd do with streams: Passing it as parameter
class Bloc
final Sink<int> _external;
Bloc(this._external);
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
The exact same way as you'd do with streams: Passing it as parameter
class Bloc
final Sink<int> _external;
Bloc(this._external);
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
answered Nov 12 '18 at 1:27
Rémi Rousselet
24.8k24783
24.8k24783
add a comment |
add a comment |
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