test2101

Extending FC_RTTable: Custom Columns, Sorting, and Pagination

Written by

adm

in

Troubleshooting FCRTTable: Common Issues and Fixes

1. Table fails to render

  • Cause: Component not imported or registered correctly.
  • Fix: Ensure correct import and that the component is included in JSX: 
    jsx
    import FC_RTTable from ‘your-library’;
// …
<FC_RTTable data={rows} columns={cols} />
  • Tip: Confirm rows and cols are defined (not undefined/null) before rendering.

2. Empty table or “No data” shown despite having data

  • Cause: Data shape mismatch between rows and columns (e.g., column accessor keys don’t match row properties) or data provided asynchronously without state update.
  • Fix:
    • Verify column accessors match row object keys: 
      js
      const columns = [{ Header: ‘Name’, accessor: ‘name’ }];
const rows = [{ name: ‘Alice’ }];
    • If fetching data, set state after fetch and pass that state to FCRTTable: 
      jsx
      const [data, setData] = useState([]);
useEffect(()=> { fetch(…).then(r=>r.json()).then(setData); }, []);
  • Tip: Console.log the data prop before rendering to confirm contents.

3. Sorting not working

  • Cause: Sorting feature not enabled or sort function expects different data type.
  • Fix:
    • Enable sorting in column definitions or table props: 
      js
      { Header: ‘Age’, accessor: ‘age’, sort: true }
    • Provide a custom sort function for complex types: 
      js
      sortMethod: (a,b) => a.age - b.age
  • Tip: Ensure numeric values are numbers, not strings; convert if necessary (e.g., Number(row.age)).

4. Pagination controls not responding

  • Cause: Pagination state not connected to the table or controlled pagination props misused.
  • Fix:
    • For internal pagination, set pageSize and allow the component to manage state: 
      jsx
      <FC_RTTable data={data} columns={cols} pageSize={10} />
    • For controlled pagination, manage pageIndex/pageSize in parent state and pass handlers: 
      jsx
      const [pageIndex, setPageIndex] = useState(0);
<FCRTTable
data={data}
  columns={cols}
  pageIndex={pageIndex}
  onPageChange={setPageIndex}
/>
  • Tip: Check event handlers for accidental preventsDefault or stopPropagation.

5. Column widths jump or layout breaks on resize

  • Cause: CSS conflicts, missing table layout rules, or inconsistent width props.
  • Fix:
    • Add stable table layout and prevent collapsing: 
      css
      .fc-rt-table { table-layout: fixed; width: 100%; }
.fc-rt-table th, .fc-rt-table td { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
    • Set explicit column widths in column definitions.
  • Tip: Inspect computed styles in devtools to find overriding CSS.

6. Row selection or checkboxes not working

  • Cause: Selection props not wired or row IDs missing.
  • Fix:
    • Ensure rowId or unique key exists for each row: 
      js
      const rows = [{ id: 1, name: ‘A’ }];
<FC_RTTable data={rows} rowKey=“id” />
    • If controlled, manage selected state and pass onSelect handler.

7. Slow performance with large datasets

  • Cause: Rendering entire dataset at once.
  • Fix:
    • Use virtualization (windowing) if supported: 
      jsx
      <FCRTTable data={data} columns={cols} virtualize />
    • Implement server-side pagination, sorting, and filtering to limit client work.
  • Tip: Memoize column definitions and row data with useMemo to avoid re-renders.

8. Custom cell renderer not updating

  • Cause: Renderer captures stale props/closure or not keyed properly.
  • Fix:
    • Define cell renderer using a stable reference and common props: 
      jsx
      const Cell = useCallback(({ value, row }) => <span>{value}</span>, []);
{ accessor: ‘name’, Cell }
    • Ensure you pass row.original or correct value prop if needed.

9. Accessibility issues (screen reader/navigation)

  • Cause: Missing ARIA attributes or improper markup.
  • Fix:
    • Add semantic table elements and ARIA where applicable:
      • Use , , , with scope attributes.
      • Ensure focusable controls have keyboard handlers.
  • Tip: Test with VoiceOver or NVDA and add skip links if necessary.

10. Integration with CSS frameworks causes style regression

  • Cause: Global CSS from frameworks (e.g., Bootstrap) overrides table styles.
  • Fix:
    • Namespace FC_RTTable styles with a unique class and increase selector specificity.
    • Use CSS modules or inline styles to isolate component styling.

Quick debugging checklist

  1. Confirm data shape matches column accessors.
  2. Console.log props passed into FC_RTTable.
  3. Check for runtime errors in console.
  4. Verify required props (rowKey, columns, data) are present.
  5. Inspect computed CSS for conflicts.
  6. Use useMemo/useCallback for stable references.
  7. Test controlled vs. uncontrolled usage patterns.

If you share a short code snippet showing how you use FC_RTTable and the exact problem, I can provide a targeted fix.

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