---
name: riverpod-observers-0b0cdfa041bc
description: Use ProviderObserver to log or debug Riverpod provider lifecycle; didUpdateProvider, ProviderScope observers, naming providers. Use when adding logging, analytics, or debugging for provider state changes. Use this skill when the user asks about ProviderObserver, logging Riverpod, or debugging provider updates.
---

# Riverpod — ProviderObservers

## Instructions

A **ProviderObserver** receives lifecycle events for providers (e.g. when a provider's value changes). Use it for logging, analytics, or debugging.

### Implementing an observer

Extend **ProviderObserver** and override the methods you need (e.g. **didUpdateProvider**). Pass instances to **ProviderScope** or **ProviderContainer** via the `observers` parameter.

### Example: logger

```dart
final class Logger extends ProviderObserver {
  @override
  void didUpdateProvider(
    ProviderObserverContext context,
    Object? previousValue,
    Object? newValue,
  ) {
    print('{"provider": "${context.provider}", "newValue": "$newValue"}');
  }
}

void main() {
  runApp(
    ProviderScope(
      observers: [Logger()],
      child: const MyApp(),
    ),
  );
}
```

### Naming providers

For clearer logs, give providers a **name**:

```dart
final myProvider = Provider<int>((ref) => 0, name: 'MyProvider');
```

With code generation, a name is usually assigned automatically.

### Note on mutations

If state is mutated in place (e.g. a List with ref.notifyListeners), `previousValue` and `newValue` in didUpdateProvider may be the same reference. For distinct values, clone before mutating.


---
Source attribution: dangdungvn
Original project: https://github.com/dangdungvn/review_system_app/blob/f397d2abe0a8d4c041cd274f0ffc5680d85e7c44/.github/skills/riverpod-observers/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2024 Minh Nguyen

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: dangdungvn
Original project: https://github.com/dangdungvn/review_system_app/blob/f397d2abe0a8d4c041cd274f0ffc5680d85e7c44/.github/skills/riverpod-observers/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management
Roles: Frontend Developer, Mobile Developer, Product Manager
Specialties: Frontend, Mobile
Tools: Riverpod
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 1e034d6550a075ce4ae004edfde91eea19554844935c6e3e2838ea6591e4c574