Design Principle
Feedback placement should match the object; toast fits short global status, while inline feedback fits fields and local fixes.
Principle Feedback placement should match the object; toast fits short global status, while inline feedback fits fields and local fixes.
Design action Use toast for save success; place errors, validation, missing information, and actionable feedback near the relevant control.
Examples Positive example: Forms, settings, upload, AI generation, and admin actions mix local and global states. Counterexample: A field error appears only in a disappearing toast.
Apply when Forms, settings, upload, AI generation, and admin actions mix local and global states. Users need to judge state, scope, risk, or next action quickly.
Source notes Source note: Synthesized from Apple HIG, Material Design, GOV.UK/Polaris/Atlassian component practices, and interaction accessibility principles.
Agent Directive
Use toast for save success; place errors, validation, missing information, and actionable feedback near the relevant control.