Cell Validation

material-table-core supports cell validation during edit.

Field	Type
column.validate	func	The function to validate the current cell

Following returns are supported:

Return value	Type
boolean	rowData => boolean	Return a Boolean to block save and show a red bar below that field (true for valid input)
string	rowData => string	Return a string to block save, to show a red bar below that field and show an appropriate error message
object	rowData => { isValid: boolean; helperText: string }	Return an object to optional block save and show a red bar below that field. A helper text will also be displayed, in red if isValid is false

info

If a string is return from validate (even ""), it will be interpreted as an error and will block the submit

Examples

Live Editor

function ValidationTable() {
  const data = [{ name: "Engel", surname: "Dominik", age: 27 }];
  const columns = [
    {
      title: "Name",
      field: "name",
      validate: (row) => (row.name || "").length !== 0,
    },
    {
      title: "Surname",
      field: "surname",
      validate: (row) =>
        (row.surname || "").length < 3
          ? "Surname must have at least 3 chars"
          : true,
    },
    {
      title: "Age",
      field: "age",
      type: "numeric",
      validate: (row) => ({
        isValid: row.age > 15,
        helperText: "Age must be above 15",
      }),
    },
  ];
  return (
    <MaterialTable
      data={data}
      columns={columns}
      editable={{
        onRowAdd: (newData) => {
          return new Promise((resolve, reject) => {
            // Must return a Promise
          });
        },
        onRowUpdate: (newData, oldData) => {
          return new Promise((resolve, reject) => {
            // Must return a Promise
          });
        },
      }}
    />
  );
}

Result

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