How can custom cell filtering be implemented in MUI X?

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Custom cell filtering can be implemented in MUI X by following these steps:

1. Define the filter function: Define a custom filter function that takes in the filter value and the cell value and returns a boolean indicating whether the cell should be filtered or not.

2. Create a custom filter component: Create a custom filter component that includes an input field for the filter value and uses the filter function to filter the data.

3. Add the filter component to the table: Add the custom filter component to the appropriate column in the MUI X table by using the FilterComponent prop.

4. Apply the filter to the data: When the filter component is updated, apply the filter function to the data using the filter method of the data array.

Example code:

const customFilterFunction = (filterValue, cellValue) => {
  // implement custom filter logic
}

const CustomFilterComponent = ({ columnDef, onFilterChanged }) => {
  const [filterValue, setFilterValue] = useState('');

  const handleFilterChange = useCallback(
    (event) => {
      const newValue = event.target.value;
      setFilterValue(newValue);
      onFilterChanged(columnDef.tableData.id, customFilterFunction(newValue, cellValue));
    },
    [columnDef, onFilterChanged]
  );

  return (
    <TextField
      value={filterValue}
      onChange={handleFilterChange}
      variant="outlined"
      placeholder={`Filter by ${columnDef.title}`}
    />
  );
};

const columns = [
  { title: 'Name', field: 'name' },
  { title: 'Age', field: 'age', type: 'numeric' },
  {
    title: 'Custom column',
    field: 'custom',
    render: (rowData) => <div>{rowData.custom}</div>,
    customFilterAndSearch: (filterValue, rowData) => customFilterFunction(filterValue, rowData.custom)
  },
];

const data = [...];

const CustomTable = () => {
  const [filteredData, setFilteredData] = useState(data);

  const handleFilterChanged = useCallback((columnId, filterValue) => {
    setFilteredData((prevData) =>
      prevData.filter((rowData) => filterValue(rowData[columnId]))
    );
  }, []);

  return (
    <MaterialTable
      columns={columns}
      data={filteredData}
      options={{ filtering: true }}
      components={{
        Filter: CustomFilterComponent,
      }}
      onFilterChanged={handleFilterChanged}
    />
  );
};