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Dynamic Columns (Remote) Example

This example shows how to generate column definitions dynamically from remote data after first render using TanStack Query. You may need to manage the columnOrder state manually if doing this.

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1import { useEffect, useMemo, useState } from 'react';
2import {
3 MaterialReactTable,
4 useMaterialReactTable,
5 type MRT_ColumnDef,
6 type MRT_ColumnFiltersState,
7 type MRT_PaginationState,
8 type MRT_SortingState,
9 type MRT_ColumnOrderState,
10} from 'material-react-table';
11import { IconButton, Tooltip } from '@mui/material';
12import RefreshIcon from '@mui/icons-material/Refresh';
13import {
14 QueryClient,
15 QueryClientProvider,
16 keepPreviousData,
17 useQuery,
18} from '@tanstack/react-query'; //note: this is TanStack React Query V5
19
20//Your API response shape will probably be different. Knowing a total row count is important though.
21type UserApiResponse = {
22 data: Array<User>;
23 meta: {
24 totalRowCount: number;
25 };
26};
27
28type User = {
29 firstName: string;
30 lastName: string;
31 address: string;
32 state: string;
33 phoneNumber: string;
34 lastLogin: Date;
35};
36
37const columnNames = {
38 firstName: 'First Name',
39 lastName: 'Last Name',
40 address: 'Address',
41 state: 'State',
42 phoneNumber: 'Phone Number',
43 lastLogin: 'Last Login',
44} as const;
45
46const Example = () => {
47 //manage our own state for stuff we want to pass to the API
48 const [columnFilters, setColumnFilters] = useState<MRT_ColumnFiltersState>(
49 [],
50 );
51 const [globalFilter, setGlobalFilter] = useState('');
52 const [sorting, setSorting] = useState<MRT_SortingState>([]);
53 const [pagination, setPagination] = useState<MRT_PaginationState>({
54 pageIndex: 0,
55 pageSize: 10,
56 });
57
58 //if using dynamic columns that are loaded after table instance creation, we will need to manage the column order state ourselves
59 const [columnOrder, setColumnOrder] = useState<MRT_ColumnOrderState>([]);
60
61 //consider storing this code in a custom hook (i.e useFetchUsers)
62 const {
63 data: { data = [], meta } = {}, //your data and api response will probably be different
64 isError,
65 isRefetching,
66 isLoading,
67 refetch,
68 } = useQuery<UserApiResponse>({
69 queryKey: [
70 'table-data',
71 columnFilters, //refetch when columnFilters changes
72 globalFilter, //refetch when globalFilter changes
73 pagination.pageIndex, //refetch when pagination.pageIndex changes
74 pagination.pageSize, //refetch when pagination.pageSize changes
75 sorting, //refetch when sorting changes
76 ],
77 queryFn: async () => {
78 const fetchURL = new URL(
79 '/api/data',
80 process.env.NODE_ENV === 'production'
81 ? 'https://www.material-react-table.com'
82 : 'http://localhost:3000',
83 );
84
85 //read our state and pass it to the API as query params
86 fetchURL.searchParams.set(
87 'start',
88 `${pagination.pageIndex * pagination.pageSize}`,
89 );
90 fetchURL.searchParams.set('size', `${pagination.pageSize}`);
91 fetchURL.searchParams.set('filters', JSON.stringify(columnFilters ?? []));
92 fetchURL.searchParams.set('globalFilter', globalFilter ?? '');
93 fetchURL.searchParams.set('sorting', JSON.stringify(sorting ?? []));
94
95 //use whatever fetch library you want, fetch, axios, etc
96 const response = await fetch(fetchURL.href);
97 const json = (await response.json()) as UserApiResponse;
98 return json;
99 },
100 placeholderData: keepPreviousData, //don't go to 0 rows when refetching or paginating to next page
101 });
102
103 //create columns from data
104 const columns = useMemo<MRT_ColumnDef<User>[]>(
105 () =>
106 data.length
107 ? Object.keys(data[0]).map((columnId) => ({
108 header: columnNames[columnId as keyof User] ?? columnId,
109 accessorKey: columnId,
110 id: columnId,
111 }))
112 : [],
113 [data],
114 );
115
116 useEffect(() => {
117 //if using dynamic columns that are loaded after table instance creation, we will need to set the column order state ourselves
118 setColumnOrder(columns.map((column) => column.id!));
119 }, [columns]);
120
121 const table = useMaterialReactTable({
122 columns,
123 data,
124 initialState: { showColumnFilters: true },
125 manualFiltering: true, //turn off built-in client-side filtering
126 manualPagination: true, //turn off built-in client-side pagination
127 manualSorting: true, //turn off built-in client-side sorting
128 //give loading spinner somewhere to go while loading
129 muiTableBodyProps: {
130 children: isLoading ? (
131 <tr style={{ height: '200px' }}>
132 <td />
133 </tr>
134 ) : undefined,
135 },
136 muiToolbarAlertBannerProps: isError
137 ? {
138 color: 'error',
139 children: 'Error loading data',
140 }
141 : undefined,
142 onColumnFiltersChange: setColumnFilters,
143 onColumnOrderChange: setColumnOrder,
144 onGlobalFilterChange: setGlobalFilter,
145 onPaginationChange: setPagination,
146 onSortingChange: setSorting,
147 renderTopToolbarCustomActions: () => (
148 <Tooltip arrow title="Refresh Data">
149 <IconButton onClick={() => refetch()}>
150 <RefreshIcon />
151 </IconButton>
152 </Tooltip>
153 ),
154 rowCount: meta?.totalRowCount ?? 0,
155 state: {
156 columnFilters,
157 columnOrder,
158 globalFilter,
159 isLoading,
160 pagination,
161 showAlertBanner: isError,
162 showProgressBars: isRefetching,
163 sorting,
164 },
165 });
166
167 return <MaterialReactTable table={table} />;
168};
169
170const queryClient = new QueryClient();
171
172const ExampleWithReactQueryProvider = () => (
173 //App.tsx or AppProviders file. Don't just wrap this component with QueryClientProvider! Wrap your whole App!
174 <QueryClientProvider client={queryClient}>
175 <Example />
176 </QueryClientProvider>
177);
178
179export default ExampleWithReactQueryProvider;
180

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