useCustomMutation

The useCustomMutation hook returns many useful properties and methods. One of them is the mutate method which expects values, method, and url as parameters. These parameters will be passed to the custom method from the dataProvider as parameters.

import { useCustomMutation, useApiUrl } from "@refinedev/core";

interface ICategory {
  id: number;
  title: string;
}

const apiUrl = useApiUrl();

const { mutate } = useCustomMutation<ICategory>();

mutate({
  url: `${API_URL}/categories`,
  method: "post",
  values: {
    title: "New Category",
  },
});

mutationOptions is used to pass options to the useMutation hook. It is useful when you want to pass additional options to the useMutation hook.

For more information, refer to the useMutation documentation →

useCustomMutation({
  mutationOptions: {
    retry: 3,
  },
});

mutationOptions does not support onSuccess and onError props because they override the default onSuccess and onError functions. If you want to use these props, you can pass them to mutate functions like this:

const { mutate } = useCustomMutation();

mutate(
  {
    url: `${API_URL}/categories`,
    method: "post",
    values: {
      title: "New Category",
    },
  },
  {
    onError: (error, variables, context) => {
      // An error occurred!
    },
    onSuccess: (data, variables, context) => {
      // Let's celebrate!
    },
  },
);

It will be passed to the custom method from the dataProvider as a parameter. It is usually used to specify the endpoint of the request.

const { mutate } = useCustomMutation();

mutate({
  url: "www.example.com/api/update-products",
});

It will be passed to the custom method from the dataProvider as a parameter. It is usually used to specify the HTTP method of the request.

const { mutate } = useCustomMutation();

mutate({
  method: "post",
});

It will be passed to the custom method from the dataProvider as a parameter. The parameter is usually used as the data to be sent with the request.

const { mutate } = useCustomMutation();

mutate({
  values: {
    name: "New Category",
    description: "New Category Description",
  },
});

It will be passed to the custom method from the dataProvider as a parameter. It can be used to specify the headers of the request.

const { mutate } = useCustomMutation();

mutate({
  config: {
    headers: {
      "x-custom-header": "foo-bar",
    },
  },
});

NotificationProvider is required for this prop to work.

This prop allows you to customize the success notification that shows up when the data is fetched successfully and useCustomMutation calls the open function from NotificationProvider:

const { mutate } = useCustomMutation();

mutate({
  successNotification: (data, values) => {
    return {
      message: `${data.title} Successfully fetched.`,
      description: "Success with no errors",
      type: "success",
    };
  },
});

NotificationProvider is required for this prop to work.

After data fetching is failed, useCustomMutation will call open function from NotificationProvider to show an error notification. With this prop, you can customize the error notification.

const { mutate } = useCustomMutation();

mutate({
  errorNotification: (data, values) => {
    return {
      message: `Something went wrong when getting ${data.id}`,
      description: "Error",
      type: "error",
    };
  },
});

meta is a special property that can be used to pass additional information to data provider methods for the following purposes:

• Customizing the data provider methods for specific use cases.
• Generating GraphQL queries using plain JavaScript Objects (JSON).

In the following example, meta is passed to the custom method from the dataProvider as a parameter.

const { mutate } = useCustomMutation();

mutate({
  meta: {
    foo: "bar",
  },
});

const myDataProvider = {
  //...
  custom: async ({
    url,
    method,
    sort,
    filters,
    payload,
    query,
    headers,
    meta,
  }) => {
    const foo = meta?.foo;

    console.log(foo); // "bar"

    //...
  },
  //...
};

For more information, refer to the meta section of the General Concepts documentation→

If there is more than one dataProvider, you can specify which one to use by passing the dataProviderName prop. It is useful when you have a different data provider for different resources.

const { mutate } = useCustomMutation();

mutate({
  dataProviderName: "second-data-provider",
});

If you want loading overtime for the request, you can pass the overtimeOptions prop to the this hook. It is useful when you want to show a loading indicator when the request takes too long. interval is the time interval in milliseconds. onInterval is the function that will be called on each interval.

Return overtime object from this hook. elapsedTime is the elapsed time in milliseconds. It becomes undefined when the request is completed.

const { overtime } = useCustomMutation({
  //...
  overtimeOptions: {
    interval: 1000,
    onInterval(elapsedInterval) {
      console.log(elapsedInterval);
    },
  },
});

console.log(overtime.elapsedTime); // undefined, 1000, 2000, 3000 4000, ...

// You can use it like this:
{
  elapsedTime >= 4000 && <div>this takes a bit longer than expected</div>;
}

Returns an object with TanStack Query's useMutation return values.

Refer to the useMutation documentation for more information →

overtime object is returned from this hook. elapsedTime is the elapsed time in milliseconds. It becomes undefined when the request is completed.

const { overtime } = useCustomMutation();

console.log(overtime.elapsedTime); // undefined, 1000, 2000, 3000 4000, ...