ColumnDef

Column definitions are plain objects with the following options:

id: string

The unique identifier for the column.

🧠 A column ID is optional when:

• An accessor column is created with an object key accessor
• The column header is defined as a string

accessorKey?: string & typeof TData

The key of the row object to use when extracting the value for the column.

accessorFn?: (originalRow: TData, index: number) => any

The accessor function to use when extracting the value for the column from each row.

columns?: ColumnDef<TData>[]

The child column defs to include in a group column.

header?:
  | string
  | ((props: {
      table: Table<TData>
      header: Header<TData>
      column: Column<TData>
    }) => unknown)

The header to display for the column. If a string is passed, it can be used as a default for the column ID. If a function is passed, it will be passed a props object for the header and should return the rendered header value (the exact type depends on the adapter being used).

footer?:
  | string
  | ((props: {
      table: Table<TData>
      header: Header<TData>
      column: Column<TData>
    }) => unknown)

The footer to display for the column. If a function is passed, it will be passed a props object for the header and should return the rendered header value (the exact type depends on the adapter being used).

cell?: ((props: {
  table: Table<TData>
  row: Row<TData>
  column: Column<TData>
  cell: Cell<TData>
  getValue: () => any
  renderValue: () => any
}) => unknown)

The cell to display each row for the column. If a function is passed, it will be passed a props object for the cell and should return the rendered cell value (the exact type depends on the adapter being used).

meta?: ColumnMeta // This interface is extensible via declaration merging. See below!

The meta data to associated with the column. We can access it anywhere when the column is available via column.columnDef.meta. This type is global to all tables and can be extended like so:

import '@tanstack/react-table'

declare module '@tanstack/table-core' {
  interface ColumnMeta<TData extends RowData, TValue> {
    foo: string
  }
}