toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
return '''
Error: Could not find the correct `ReactterProvider<$valueType>` above this `$widgetType` Widget
This happens because you used a `BuildContext` that does not include the instance of your choice.
There are a few common scenarios:
- You added a new `ReactterProvider` in your `main.dart` and perform a hot-restart.
- The instance you are trying to read is in a different route.
`ReactterProvider` is a "scoped". So if you insert of `ReactterProvider` inside a route, then
other routes will not be able to access that instance.
- You used a `BuildContext` that is an ancestor of the `ReactterProvider` you are trying to read.
Make sure that `$widgetType` is under your `ReactterProvider<$valueType>`.
This usually happens when you are creating a instance and trying to read it immediately.
For example, instead of:
```
Widget build(BuildContext context) {
return ReactterProvider(
() => AppController(),
// Will throw a `ReactterInstanceNotFoundException`,
// because `context` is out of `ReactterProvider`'s scope.
child: Text(context.watch<AppController>().state.value),
),
}
```
Try to use `builder` propery of `ReactterProvider` to access the instance inmedately as it created, like so:
```
Widget build(BuildContext context) {
return ReactterProvider(
() => AppController(),
// we use `builder` to obtain a new `BuildContext` that has access to the provider
builder: (context, appController, child) {
// No longer throws
context.watch<AppController>();
return Text(appController.state.value),
}
),
}
```
If none of these solutions work, consider asking for help on StackOverflow:
https://stackoverflow.com/questions/tagged/flutter
''';
}