74 lines
2.5 KiB
Plaintext
74 lines
2.5 KiB
Plaintext
CRITICAL NODE-RED DASHBOARD CHART.JS FIX - PRESERVE ALL FUNCTIONALITY
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I'm experiencing a Chart.js error in my Node-RED dashboard: Cannot read properties of undefined (reading 'length') at the determineDataLimits function. This occurs when trying to load charts with time-based x-axes.
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Current Error Details:
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Error location: app.min.js:556 in a.determineDataLimits
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Additional 404 error: ui/loading.html not found
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Chart.js version appears to be v4
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Time adapter (chartjs-adapter-date-fns) was supposedly added but charts still not rendering
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REQUIREMENTS (ALL MUST BE MET):
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Fix the Chart.js time scale issue:
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Ensure chartjs-adapter-date-fns is properly loaded and initialized BEFORE any charts are created
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Verify the adapter is compatible with the Chart.js version being used
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Confirm the time scale is properly registered with Chart.js
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Verify mock data structure:
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Mock data must have proper timestamp format (ISO 8601 or Unix timestamps)
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Data arrays must have matching lengths for x and y values
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Include realistic variance for: OEE (~72%), Availability (~85%), Performance (~88%), Quality (~94%)
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Check loading order:
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Chart.js library must load first
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Time adapter must load second
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Chart creation code must execute last
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Add console logs to verify loading sequence
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PRESERVE ALL EXISTING FUNCTIONALITY:
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Home tab - unchanged
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Alerts tab - unchanged
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Work Orders tab - unchanged
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Settings tab - unchanged
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Help tab - unchanged
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Only the Graphs tab should be modified
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Provide complete debugging steps:
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Show me how to verify the adapter is loaded in browser console
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Provide fallback options if adapter doesn't load from CDN
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Include error handling for chart initialization failures
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Output format:
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Provide the complete Node-RED flow JSON that I can import
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Include all necessary HTML/JavaScript for the dashboard template
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Mark clearly which nodes have been modified vs. unchanged
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Include step-by-step deployment instructions
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Additional Context:
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Node-RED dashboard is running on http://10.147.20.185:1880
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Using Less CSS (app.min.less) for styling
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Need hard refresh instructions for different browsers after deployment
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Success Criteria:
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No console errors after deployment and hard refresh
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Charts display with mock data immediately upon loading Graphs tab
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All filter buttons are clickable and functional
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All other tabs remain completely functional
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Solution works without requiring external CDN if possible
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Please provide a complete, tested solution that addresses every point above. Include explanations for each fix so I understand what was wrong and how it's been corrected. |