Add cancelled_by, cancellation_source (organiser|volunteer|system), and cancelled_at columns to shift_assignments. Cancel flow now records who cancelled and why. Assign flow reactivates existing cancelled/rejected records instead of creating duplicates, preventing UNIQUE constraint violations. Assignable-persons endpoint returns previous_assignment data for contextual UI indicators. Frontend shows cancellation source labels, previous assignment history in assign dialog, and "Opnieuw toewijzen" buttons with volunteer-cancelled confirmation dialogs. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
13 lines
187 B
PHP
13 lines
187 B
PHP
<?php
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declare(strict_types=1);
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namespace App\Enums;
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enum CancellationSource: string
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{
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case ORGANISER = 'organiser';
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case VOLUNTEER = 'volunteer';
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case SYSTEM = 'system';
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}
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