Flutter Actions (mutations)

Short summary

Riverpod introduces Action, a first-class primitive for user-triggered async operations (login, checkout, delete) with four states (idle, loading, success, error) and lifecycle callbacks. It solves AsyncValue limitations: missing idle state, verbose imperative side-effect handling, and double-submission bugs. Implementation includes ActionState<T> sealed class, ActionHandler mixin with guards, and listenAction widget extension separating state-watching (rendering) from side effects (navigation, toasts).

• •Action primitive exposes idle/loading/success/error states for async operations with declarative lifecycle callbacks
• •Solves AsyncValue gaps: lack of idle state, try/catch in widgets, verbose ref.listen patterns, double-submission vulnerabilities
• •Clean separation: watch state for rendering, listenAction for side effects; ActionHandler mixin guards against re-execution

Generated with AI, which can make mistakes.