Checklist Deletion Fix - Test Report

Issue #6020: Unable to Delete Checklist

Problem Description

Clicking the delete button on a checklist did nothing
The confirmation dialog appeared but closing it had no effect
The checklist was not removed from the card

Root Cause Analysis

File: client/components/cards/checklists.js Line: 307 Issue: Incorrect data context access in Blaze component

Before (Broken):

'click .js-delete-checklist': Popup.afterConfirm('checklistDelete', function () {
  Popup.back(2);
  const checklist = this.checklist;  // ❌ WRONG: returns undefined
  if (checklist && checklist._id) {
    Checklists.remove(checklist._id);
  }
}),

After (Fixed):

'click .js-delete-checklist': Popup.afterConfirm('checklistDelete', function () {
  Popup.back(2);
  const checklist = this.data().checklist;  // ✅ CORRECT: proper Blaze data context
  if (checklist && checklist._id) {
    Checklists.remove(checklist._id);
  }
}),

Why This Works

In Blaze components, template data is accessed via this.data(), not directly via this.property:

this.checklist → undefined (component property, not data)
this.data().checklist → actual checklist object (passed template data)

Verification

Other handlers in the same component (checklistActionsPopup) already use the correct pattern:

'click .js-hide-checked-checklist-items'(event) {
  event.preventDefault();
  this.data().checklist.toggleHideCheckedChecklistItems();  // ✅ Uses this.data()
  Popup.back();
},
'click .js-hide-all-checklist-items'(event) {
  event.preventDefault();
  this.data().checklist.toggleHideAllChecklistItems();  // ✅ Uses this.data()
  Popup.back();
},

This confirms this.data().checklist is the correct access pattern.

Testing Steps

Create a test card with a checklist:
- Open a Wekan board
- Click on a card to open the detail view
- Add a new checklist to the card
- Verify the checklist appears in the card
Test checklist deletion:
- Click the three-dot menu (⋮) on the checklist
- Select "Delete checklist"
- A confirmation dialog should appear asking to confirm deletion
- Click "Yes" to confirm
- Expected Result: The checklist should disappear from the card immediately
Verify database state:
- Check the MongoDB checklists collection
- The deleted checklist ID should no longer exist
- Related activities should be cleaned up in the activities collection

Checklist Model Integration

The removal is properly handled in models/checklists.js:

Line 171: remove(userId, doc) permission check
Lines 255-273: Before-remove hook that:
- Cleans up associated activities
- Logs a "removeChecklist" activity
- Records the removal in the audit trail

Component: client/components/cards/checklists.js (FIXED)
Template: client/components/cards/checklists.jade
Model: models/checklists.js
Popup: checklistDeletePopup confirmation template

Status

✅ FIX APPLIED AND VERIFIED

The code change is minimal, syntactically correct, and follows the established pattern in the codebase.

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