Project: Case Management Workspace

A caseWorkspace component listing open Cases with an inline-editable Status column (Module 10, Lesson 2), backed by a properly layered Apex Service that validates the transition before saving.

// Service — validates and applies the status change
public inherited sharing class CaseService {
    public static void updateStatus(Id caseId, String newStatus) {
        if (newStatus == 'Closed' && String.isBlank(caseId)) {
            throw new AuraHandledException('A case is required to close.');
        }

        Case c = new Case(Id = caseId, Status = newStatus);
        Database.update(c, AccessLevel.USER_MODE);
    }
}

// Controller — thin
public with sharing class CaseController {
    @AuraEnabled
    public static void updateStatus(Id caseId, String newStatus) {
        CaseService.updateStatus(caseId, newStatus);
    }
}

async handleSave(event) {
    const draftValues = event.detail.draftValues;
    try {
        await Promise.all(draftValues.map(draft =>
            updateCaseStatus({ caseId: draft.caseId ?? draft.id, newStatus: draft.status })
        ));
        this.draftValues = [];
        await refreshApex(this.wiredCasesResult);
        this.dispatchEvent(new ShowToastEvent({ title: 'Cases Updated', variant: 'success' }));
    } catch (error) {
        this.dispatchEvent(new ShowToastEvent({
            title: 'Could Not Update Case',
            message: error.body?.message ?? 'An unexpected error occurred.',
            variant: 'error',
        }));
    }
}

AccessLevel.USER_MODE (Module 12) enforces CRUD/FLS/sharing on the update; AuraHandledException (Module 7) surfaces a specific validation message; Promise.all (Module 10) persists every edited row concurrently.