HH/CHARTJS_TO_APEXCHARTS_MIGRATION.md

Chart.js to ApexCharts Migration

Overview

Successfully migrated all Chart.js implementations to ApexCharts across the entire PX360 project.

Migration Date

December 31, 2025

Changes Made

1. Base Template (templates/layouts/base.html)

• Removed: Chart.js CDN link (chart.js@4.4.0)
• Added: ApexCharts CDN link (apexcharts@3.45.1)

2. Complaints Analytics (templates/complaints/analytics.html)

• Removed: Duplicate Chart.js CDN link in extra_css block
• Updated: Canvas elements replaced with div elements
  • <canvas id="trendChart"> → <div id="trendChart">
  • <canvas id="categoryChart"> → <div id="categoryChart">
• Migrated Charts:
  • Trend Chart: Line chart → ApexCharts area chart with gradient fill
  • Category Chart: Doughnut chart → ApexCharts donut chart

3. Dashboard Command Center (templates/dashboard/command_center.html)

• Updated: Canvas element replaced with div element
  • <canvas id="complaintsTrendChart"> → <div id="complaintsTrendChart">
• Migrated Charts:
  • Complaints Trend Chart: Line chart → ApexCharts area chart with gradient fill

Chart Configurations

Trend/Line Charts (Area Charts in ApexCharts)

• Type: Area chart with smooth curves
• Features:
  • Gradient fill for better visual appeal
  • Smooth stroke curves
  • Responsive design
  • Clean grid lines with dashed borders
  • Light theme tooltips
  • No toolbar for cleaner look
  • Auto-scaling Y-axis starting from 0

Category/Doughnut Charts (Donut Charts in ApexCharts)

• Type: Donut chart
• Features:
  • Percentage labels on data points
  • Bottom-positioned legend
  • 65% donut size for optimal display
  • Same color scheme as Chart.js for consistency
  • Light theme tooltips

Benefits of ApexCharts

1. Modern Design: More polished and professional appearance
2. Better Performance: Optimized rendering engine
3. Rich Features: Built-in animations, gradients, and interactions
4. Responsive: Better mobile and tablet support
5. Active Development: Regular updates and improvements
6. Better Documentation: Comprehensive API documentation
7. TypeScript Support: Better for modern development workflows

Color Schemes Maintained

Trend Charts

• Primary color: #4bc0c0 (teal) for complaints analytics
• Primary color: #ef4444 (red) for dashboard command center

Category/Donut Charts

• Red: #ff6384
• Blue: #36a2eb
• Yellow: #ffce56
• Teal: #4bc0c0
• Purple: #9966ff
• Orange: #ff9f40

Testing Recommendations

1. Visual Testing: Verify charts render correctly on all pages
2. Responsive Testing: Check charts on mobile, tablet, and desktop
3. Data Testing: Ensure data is correctly displayed
4. Browser Testing: Test on Chrome, Firefox, Safari, and Edge
5. RTL Testing: Verify charts work correctly in Arabic (RTL) mode

Files Modified

1. templates/layouts/base.html
2. templates/complaints/analytics.html
3. templates/dashboard/command_center.html

Verification

All Chart.js references have been removed from the project. Search results confirm:

• No new Chart( instances found
• No chart.js CDN links found
• All canvas elements for charts have been replaced with div elements

Rollback Instructions

If needed, to rollback to Chart.js:

1. In templates/layouts/base.html, replace:

   <script src="https://cdn.jsdelivr.net/npm/apexcharts@3.45.1/dist/apexcharts.min.js"></script>
   

   with:

   <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
   

2. Restore the original Chart.js implementations from git history for:

   • templates/complaints/analytics.html
   • templates/dashboard/command_center.html

Notes

• ApexCharts is loaded globally in the base template, so it's available on all pages
• No additional dependencies or npm packages required
• CDN version used for easy deployment and maintenance
• All chart configurations are inline in the templates for easy customization

Migration Complete ✓

All Chart.js implementations have been successfully replaced with ApexCharts throughout the project.