useSelect

Here is a basic example of how to use useSelect hook.

import { useSelect } from "@refinedev/core";

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

const Categpries: React.FC = () => {
  const { options } = useSelect<ICategory>({
    resource: "categories",
  });

  return (
    <label>
      Select a category:
      <select>
        {options?.map((option) => (
          <option key={option.value} value={option.value}>
            {option.label}
          </option>
        ))}
      </select>
    </label>
  );
};

LiveProvider is required for this prop to work.

When useSelect hook is mounted, it will call the subscribe method from the liveProvider with some parameters such as channel, resource etc. It is useful when you want to subscribe to the live updates.

It will be passed to the getList method from the dataProvider as parameter via the useList hook. The parameter is usually used as an API endpoint path. It all depends on how to handle the resource in the getList method.

useSelect({
  resource: "categories",
});

For more information, refer to the creating a data provider→

If you have multiple resources with the same name, you can pass the identifier instead of the name of the resource. It will only be used as the main matching key for the resource, data provider methods will still work with the name of the resource defined in the <Refine/> component.

For more information, refer to the identifier of the <Refine/> component documentation →

Allows you to change the value and label of your options. Default values are optionLabel = "title" and optionValue = "id"

useSelect<ICategory>({
    resource: "products",
    optionLabel: "name"
    optionValue: "productId"
});

These properties also supports nested property access with Object path syntax.

const { options } = useSelect({
  resource: "categories",
  optionLabel: "nested.title",
  optionValue: "nested.id",
});

It's also possible to pass function to these props. These functions will receive item argument.

const { options } = useSelect({
  optionLabel: (item) => `${item.firstName} ${item.lastName}`,
  optionValue: (item) => item.id,
});

Can be used to specify which field will be searched with value given to onSearch function.

const { onSearch } = useSelect({ searchField: "name" });

onSearch("John"); // Searches by `name` field with value John.

By default, it uses optionLabel's value, if optionLabel is a string. Uses title field otherwise.

// When `optionLabel` is string.
const { onSearch } = useSelect({ optionLabel: "name" });

onSearch("John"); // Searches by `name` field with value John.

// When `optionLabel` is function.
const { onSearch } = useSelect({
  optionLabel: (item) => `${item.id} - ${item.name}`,
});

onSearch("John"); // Searches by `title` field with value John.

It allows to show the options in the desired order. sorters will be passed to the getList method from the dataProvider as parameter via the useList hook. It is used to send sort query parameters to the API.

useSelect({
  sorters: [
    {
      field: "title",
      order: "asc",
    },
  ],
});

import { useSelect } from "@refinedev/core";

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

const Categories: React.FC = () => {
  const [order, setOrder] = React.useState<"asc" | "desc">("asc");
  const { options } = useSelect<ICategory>({
    resource: "categories",
    sorters: [
      {
        field: "title",
        order,
      },
    ],
  });

  return (
    <>
      <label>
        Select a category:
        <select>
          {options?.map((option) => (
            <option key={option.value} value={option.value}>
              {option.label}
            </option>
          ))}
        </select>
        <button onClick={() => setOrder(order === "asc" ? "desc" : "asc")}>
          Toggle
        </button>
      </label>
    </>
  );
};

For more information, refer to the CrudSorting interface →

It is used to show options by filtering them. filters will be passed to the getList method from the dataProvider as parameter via the useList hook. It is used to send filter query parameters to the API.

useSelect({
  filter: [
    {
      field: "isActive",
      operator: "eq",
      value: true,
    },
  ],
});

For more information, refer to the CrudFilters interface →

Allows to make options selected by default. Adds extra options to <select> component. In some cases like there are many entries for the <select> and pagination is required, defaultValue may not be present in the current visible options and this can break the <select> component. To avoid such cases, A separate useMany query is sent to the backend with the defaultValue and appended to the options of <select>, ensuring the default values exist in the current options array. Since it uses useMany to query the necessary data, the defaultValue can be a single value or an array of values like the following:

useSelect({
  defaultValue: 1, // or [1, 2]
});

selectedOptionsOrder allows us to sort selectedOptions on defaultValue. It can be:

• "in-place": sort selectedOptions at the bottom. It is by default.
• "selected-first": sort selectedOptions at the top.

useSelect({
  defaultValue: 1, // or [1, 2]
  selectedOptionsOrder: "selected-first", // in-place | selected-first
});

For more information, refer to the useMany documentation→

It allows us to debounce the onSearch function.

useSelect({
  resource: "categories",
  debounce: 500,
});

queryOptions is used to pass additional options to the useQuery hook. It is useful when you want to pass additional options to the useQuery hook.

useSelect({
  queryOptions: {
    retry: 3,
  },
});

For more information, refer to the useQuery documentation→

pagination will be passed to the getList method from the dataProvider as parameter. It is used to send pagination query parameters to the API.

You can pass the current page number to the pagination property.

useSelect({
  pagination: {
    current: 2,
  },
});

You can pass the pageSize to the pagination property.

useSelect({
  pagination: {
    pageSize: 20,
  },
});

Is used to determine whether to use server-side pagination or not. It can be "off", "client" or "server"

useSelect({
  pagination: {
    mode: "off",
  },
});

When the defaultValue property is given, the useMany data hook is called for the selected records. With this property, you can change the options of this query. If not given, the values given in queryOptions will be used.

const { options } = useSelect({
  resource: "categories",
  defaultValueQueryOptions: {
    onSuccess: (data) => {
      console.log("triggers when on query return on success");
    },
  },
});

It allows us to AutoComplete the options.

import { useSelect } from "@refinedev/core";

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

const Categories: React.FC = () => {
  const { options, onSearch } = useSelect<ICategory>({
    resource: "categories",
    onSearch: (value) => [
      {
        field: "title",
        operator: "contains",
        value,
      },
    ],
  });

  return (
    <>
      <p>
        Filter:
        <input onChange={(e) => onSearch(e.target.value)} />
      </p>

      <select>
        {options?.map((option) => (
          <option key={option.value} value={option.value}>
            {option.label}
          </option>
        ))}
      </select>
    </>
  );
};

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, we pass the headers property in the meta object to the create method. With similar logic, you can pass any properties to specifically handle the data provider methods.

useSelect({
  meta: {
    headers: { "x-meta-data": "true" },
  },
});

const myDataProvider = {
  //...
  getList: async ({
    resource,
    pagination,
    sorters,
    filters,
    meta,
  }) => {
    const headers = meta?.headers ?? {};
    const url = `${apiUrl}/${resource}`;
    //...
    //...
    const { data, headers } = await httpClient.get(`${url}`, { headers });
    return {
      data,
    };
  },
  //...
};

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.

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

NotificationProvider is required for this prop to work.

After data is fetched successfully, useSelect can call open function from NotificationProvider to show a success notification. With this prop, you can customize the success notification.

useSelect({
  successNotification: (data, values, resource) => {
    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, useSelect will call open function from NotificationProvider to show a error notification. With this prop, you can customize the error notification.

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

LiveProvider is required for this prop to work.

Determines whether to update data automatically ("auto") or not ("manual") if a related live event is received. It can be used to update and show data in Realtime throughout your app. For more information about live mode, please check Live / Realtime page.

useSelect({
  liveMode: "auto",
});

LiveProvider is required for this prop to work.

The callback function that is executed when new events from a subscription are arrived.

useSelect({
  onLiveEvent: (event) => {
    console.log(event);
  },
});

LiveProvider is required for this prop to work.

Params to pass to liveProvider's subscribe method.

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 } = useSelect({
  //...
  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>;
}

You may want to get all the data without pagination. In this case you should use the pagination.mode prop set to "off". The data provider must have the appropriate implementation in order to use this feature.

onSearch is a function that is used to set the search value. It is useful when you want to search for a specific value. A simple example of this is shown below.

import { useSelect } from "@refinedev/core";

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

const Categories: React.FC = () => {
  const { options, onSearch } = useSelect<ICategory>({
    resource: "categories",
    onSearch: (value) => [
      {
        field: "title",
        operator: "contains",
        value,
      },
    ],
  });

  return (
    <>
      <p>
        Filter:
        <input onChange={(e) => onSearch(e.target.value)} />
      </p>

      <select>
        {options?.map((option) => (
          <option key={option.value} value={option.value}>
            {option.label}
          </option>
        ))}
      </select>
    </>
  );
};

In some cases we only have id, it may be necessary to show it selected in the selection box. This hook sends the request via useMany, gets the data and marks it as selected.

import { useSelect } from "@refinedev/core";

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

const Categories: React.FC = () => {
  const { options } = useSelect<ICategory>({
    resource: "categories",
    defaultValue: 3,
  });

  return (
    <label>
      Select a category:
      <select>
        {options?.map((option) => (
          <option key={option.value} value={option.value}>
            {option.value}-{option.label}
          </option>
        ))}
      </select>
    </label>
  );
};

optionLabel and optionValue are used to change the value of your options. The default values are optionsLabel="title" and optionsValue="id".

To change to name and categoryId;

useSelect({
  optionLabel: "name",
  optionValue: "categoryId",
});

Sometimes it may not be enough to create optionLabel and optionValue options. In this case we create options with query.

const { query } = useSelect({
  resource: "categories",
});

const options = query.data?.data.map((item) => ({
  label: item.name,
  value: item.id,
}));

return (
  <select>
    {options?.map((option) => (
      <option key={option.value} value={option.value}>
        {option.label}
      </option>
    ))}
  </select>
);