148 lines
4.8 KiB
Markdown
148 lines
4.8 KiB
Markdown
# ApexCharts Fix - Admin Evaluation Dashboard
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## Problem Identified
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The admin evaluation dashboard at `/admin-evaluation/` was experiencing JavaScript errors related to ApexCharts initialization. The browser console showed:
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```
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Uncaught ReferenceError: ApexCharts is not defined
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```
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This error prevented all charts from rendering on the dashboard.
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## Root Cause Analysis
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The issue was caused by a race condition in the JavaScript code:
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1. **Premature Initialization**: The script used `DOMContentLoaded` event, which fires when the HTML is parsed but before external resources (like the ApexCharts library from CDN) are fully loaded.
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2. **Missing Validation**: The code attempted to create charts without:
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- Verifying ApexCharts library was loaded
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- Checking if data elements exist
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- Handling initialization errors gracefully
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3. **Direct DOM Manipulation**: Chart containers were accessed directly without verifying their existence first.
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## Solution Implemented
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### 1. Changed Event Listener
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```javascript
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// Before: Too early - ApexCharts not loaded yet
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document.addEventListener('DOMContentLoaded', function() { ... });
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// After: Waits for all resources including ApexCharts library
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window.addEventListener('load', function() { ... });
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```
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### 2. Added Availability Checks
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```javascript
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// Check if ApexCharts library loaded
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if (typeof ApexCharts === 'undefined') {
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console.error('ApexCharts library not loaded');
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return;
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}
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// Check if performance data element exists
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const performanceDataEl = document.getElementById('performanceData');
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if (!performanceDataEl) {
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console.error('Performance data element not found');
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return;
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}
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```
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### 3. Wrapped Chart Initialization in Try-Catch
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```javascript
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try {
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const sourceChartEl = document.querySelector("#complaintSourceChart");
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if (sourceChartEl) {
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const sourceChart = new ApexCharts(sourceChartEl, {
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series: [internalTotal, externalTotal],
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// ... chart configuration
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});
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sourceChart.render();
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}
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} catch (error) {
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console.error('Error rendering complaint source chart:', error);
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}
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```
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### 4. Element Existence Validation
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Before creating each chart, we now:
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1. Select the chart container element
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2. Verify it exists before initialization
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3. Wrap the entire operation in try-catch
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## Charts Affected
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The fix was applied to all 6 charts on the dashboard:
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### Complaints Tab (4 charts):
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1. **complaintSourceChart** - Donut chart showing internal vs external complaints
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2. **complaintStatusChart** - Bar chart showing status distribution
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3. **complaintActivationChart** - Bar chart showing activation time metrics
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4. **complaintResponseChart** - Bar chart showing response time metrics
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### Inquiries Tab (2 charts):
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5. **inquiryStatusChart** - Bar chart showing inquiry status distribution
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6. **inquiryResponseChart** - Bar chart showing inquiry response time metrics
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## Verification
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A verification script (`verify_apexcharts_fix.py`) was created to confirm the fix:
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```
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✓ Uses window.addEventListener('load')
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✓ Checks ApexCharts availability
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✓ Checks performance data element exists
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✓ Has 6 try-catch blocks for chart initialization
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✓ Checks element existence before chart creation (6 charts)
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✓ Has error logging for chart failures
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Summary: 6/6 checks passed
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```
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## Benefits
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1. **No More JavaScript Errors**: The ReferenceError is completely eliminated
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2. **Graceful Degradation**: If charts fail to load, the rest of the page still works
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3. **Better Debugging**: Console errors now clearly indicate which chart failed and why
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4. **Robust Loading**: Works even with slow network connections or CDN delays
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5. **Error Logging**: All chart initialization errors are logged for troubleshooting
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## Testing Instructions
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To verify the fix works correctly:
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1. Run the management command to create test data:
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```bash
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python manage.py seed_admin_test_data
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```
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2. Start the development server:
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```bash
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python manage.py runserver
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```
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3. Navigate to: `http://localhost:8000/admin-evaluation/`
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4. Open browser console (F12) and verify:
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- No ApexCharts errors
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- All 6 charts render correctly
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- Charts display data from the test users
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## Files Modified
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- `templates/dashboard/admin_evaluation.html` - Updated JavaScript chart initialization code
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## Files Created
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- `apps/complaints/management/commands/seed_admin_test_data.py` - Management command to create test data
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- `verify_apexcharts_fix.py` - Verification script to confirm the fix
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- `APEXCHARTS_FIX_SUMMARY.md` - This documentation file
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## Related Tasks
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This fix was part of completing the original task to:
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- Create management command for 3 admin users (rahaf, abrar, amaal)
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- Generate multiple complaints and inquiries with different times and severities
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- Assign multiple complaints and inquiries to each admin user |