joabgonzalez AG Grid
React data tables with sorting, filtering, pagination, inline editing, and Excel-like features. TypeScript typing, accessibility, and virtualization.
Examples use
ag-grid-react. Column config API (ColDef,onGridReady) is framework-agnostic — adapt cell renderers to your framework's component syntax for Angular/Vue.
When to Use
- Data tables with sorting/filtering/pagination
- Editable grids with inline editing
- Complex grids with grouping/aggregation
- High-performance with virtualization
- Excel-like functionality
Don't use for:
- Simple tables (use HTML/MUI Table)
- Non-tabular viz (use charts)
- Mobile-first (consider simpler)
Critical Patterns
✅ REQUIRED: Use TypeScript Interfaces for Type Safety
// ✅ CORRECT: Typed column definitions
import { ColDef } from "ag-grid-community";
interface RowData {
id: number;
name: string;
}
const columnDefs: ColDef<RowData>[] = [{ field: "id" }, { field: "name" }];
// ❌ WRONG: Untyped columns
const columnDefs = [{ field: "id" }, { field: "name" }];
✅ REQUIRED: Use defaultColDef for Common Settings
// ✅ CORRECT: DRY column configuration
const defaultColDef: ColDef = {
sortable: true,
filter: true,
resizable: true,
};
<AgGridReact defaultColDef={defaultColDef} />
// ❌ WRONG: Repeating config for each column
const columnDefs = [
{ field: 'id', sortable: true, filter: true, resizable: true },
{ field: 'name', sortable: true, filter: true, resizable: true },
];
✅ REQUIRED: Enable Accessibility Features
// ✅ CORRECT: Accessibility enabled
<AgGridReact
enableAccessibility={true}
suppressMenuHide={false}
/>
Conventions
AG Grid Specific
- TypeScript interfaces for columns
- Cell renderers for custom content
- Apply accessibility best practices: keyboard navigation, screen reader support, ARIA attributes
- Built-in features over custom
- Handle loading/error states
Decision Tree
Custom cells?
→ Use cellRenderer/cellRendererFramework
Editable?
→ editable: true, handle onCellValueChanged
Filtering?
→ filter: true or specify type (agTextColumnFilter, agNumberColumnFilter)
Large dataset?
→ rowModelType: 'infinite' for server pagination
Grouping?
→ rowGroup: true on columns
Export?
→ exportDataAsCsv()/exportDataAsExcel()
Performance?
→ Virtualization (default), immutableData: true for React
Example
import { ColDef } from 'ag-grid-community';
import { AgGridReact } from 'ag-grid-react';
interface RowData {
id: number;
name: string;
value: number;
}
const columnDefs: ColDef<RowData>[] = [
{ field: 'id', headerName: 'ID' },
{ field: 'name', headerName: 'Name', sortable: true },
{ field: 'value', headerName: 'Value', filter: 'agNumberColumnFilter' }
];
<AgGridReact<RowData>
rowData={data}
columnDefs={columnDefs}
defaultColDef={{ flex: 1, minWidth: 100 }}
/>
Edge Cases
- Empty data → appropriate messaging
- Loading states during fetch
- Error boundaries for failures
- Resize events properly
- Test keyboard navigation