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MultiSelect

Custom searchable multi select
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@mantine/core

Usage

MultiSelect component allows user to pick any amount of option from the given data:

A bare minimum example:

const data = [
  { value: 'react', label: 'React' },
  { value: 'ng', label: 'Angular' },
  { value: 'svelte', label: 'Svelte' },
  { value: 'vue', label: 'Vue' },
  { value: 'riot', label: 'Riot' },
  { value: 'next', label: 'Next.js' },
  { value: 'blitz', label: 'Blitz.js' },
];


function Demo() {
  return (
    <MultiSelect
      data={data}
      label="Your favorite frameworks/libraries"
      placeholder="Pick all that you like"
    />
  );
}

Controlled

import { useState } from 'react';
import { MultiSelect } from '@mantine/core';


function Demo() {
  const [value, setValue] = useState([]);
  return <MultiSelect value={value} onChange={setValue} />;
}

Note that MultiSelect value should always be an array of either string or null:

// Incorrect, will have bugs
<MultiSelect data={[{ value: 1, label: '1' }]} value={[1]} />


// Correct, works as expected
<MultiSelect data={[{ value: '1', label: '1' }]} value={['1']} />

Data prop

MultiSelect support two different data formats:

  1. An array of strings – use when you do not need to customize item component or display label different than value
  2. An array of objects with required value and label properties and any other additional properties
// Data as an array of strings, will be mapped to
// [
//  { value: 'React', label: 'React' },
//  { value: 'Angular', label: 'Angular' },
//  { value: 'Svelte', label: 'Svelte' },
//  { value: 'Vue', label: 'Vue' },
// ]
<MultiSelect data={['React', 'Angular', 'Svelte', 'Vue']} />


// Data as an array of objects:
// Minimal example (same as first example above)
<MultiSelect data={[
  { value: 'React', label: 'React' },
  { value: 'Angular', label: 'Angular' },
  { value: 'Svelte', label: 'Svelte' },
  { value: 'Vue', label: 'Vue' },
]} />


// Additional data properties for custom item component (see documentation below)
<MultiSelect
  valueComponent={({ value, label, image, name }) => /* Your custom value component with data properties */}
  itemComponent={({ value, label, image, name }) => /* Your custom item component with data properties */}
  data={[
    {
      value: 'bob@handsome.inc',
      label: 'bob@handsome.inc',
      image: 'image-link',
      name: 'Bob Handsome',
    },
    {
      value: 'bill@outlook.com',
      label: 'bill@outlook.com',
      image: 'image-link',
      name: 'Bill Rataconda',
    },
    {
      value: 'amy@wong.cn',
      label: 'amy@wong.cn',
      image: 'image-link',
      name: 'Amy Wong',
    },
  ]}
/>

Searchable

Set searchable prop to enable search in select and nothingFound prop to provide label that will be shown when no options were found:

<MultiSelect
  data={data}
  label="Your favorite frameworks/libraries"
  placeholder="Pick all that you like"
  searchable
  nothingFound="Nothing found"
/>

Clearable

Set clearable prop to enable clearing all values at once. When prop is true and at least value is selected clear button will replace chevron in right section:

<MultiSelect
  data={data}
  label="Your favorite frameworks/libraries"
  placeholder="Pick all that you like"
  defaultValue={['react', 'next']}
  clearButtonLabel="Clear selection"
  clearable
/>

Large data set

When dropdown height is exceeded dropdown becomes scrollable, to change max-height set maxDropdownHeight prop with value in px:

const data = Array(50).fill(0).map((_, index) => `Item ${index}`);


<MultiSelect
  data={data}
  label="Large data set"
  placeholder="Scroll to see all options"
  maxDropdownHeight={160}
/>

Custom item component

You can change select item component and filtering logic that is used in search. To do so you will need to:

  • Add extra props to data objects
  • Create filter function which determines whether item should be added to the search results
  • Provide itemComponent and valueComponent which will consume data objects
// Minimum data used in previous examples
[
  { value: 'react', label: 'React' },
  { value: 'ng', label: 'Angular' },
  { value: 'svelte', label: 'Svelte' },
  { value: 'vue', label: 'Vue' },
];

You can add any other fields to your data:

[
  {
    value: 'bob@handsome.inc',
    image: 'image-link',
    label: 'bob@handsome.inc',
    name: 'Bob Handsome',
  },
  {
    value: 'bill@outlook.com',
    image: 'image-link',
    label: 'bill@outlook.com',
    name: 'Bill Rataconda',
  },
  { value: 'amy@wong.cn', image: 'image-link', label: 'amy@wong.cn', name: 'Amy Wong' },
];

Based on this data shape you can create custom filter function and itemComponent:

import { Group, Avatar, Text, MultiSelect } from '@mantine/core';


const data = [
  { value: 'bob@handsome.inc', image: 'image-link', label: 'bob@handsome.inc', name: 'Bob Handsome' },
  { value: 'bill@outlook.com', image: 'image-link', label: 'bill@outlook.com', name: 'Bill Rataconda' },
  { value: 'amy@wong.cn', image: 'image-link', label: 'amy@wong.cn', name: 'Amy Wong' },
];


function SelectItem({ image, label, name, ...others }) {
  return (
    <div {...others}>
      <Group style={{ cursor: 'pointer' }}>
        <Avatar src={image} radius="xl" />


        <div>
          <Text>{name}</Text>
          <Text size="xs" color="blue">
            {label}
          </Text>
        </div>
      </Group>
    </div>
  );
}


function Demo() {
  return (
    <MultiSelect
      label="Choose employees of the month"
      placeholder="Pick all you like"
      itemComponent={SelectItem}
      data={data}
      searchable
      nothingFound="Nobody here"
      filter={(value, selected, item) =>
        !selected &&
        (item.name.toLowerCase().includes(value.toLowerCase().trim()) ||
          item.label.toLowerCase().includes(value.toLowerCase().trim()))
      }
    />
  );
}

Custom label component

Apart from itemComponent you can customize appearance of label by providing labelComponent:

import Flag from 'react-flagpack';
import { CloseButton, MultiSelect } from '@mantine/core';


function Value({ value, label, onRemove, themeOverride, classNames, ...others }) {
  const theme = useMantineTheme();


  return (
    <div {...others}>
      <div
        style={{
          display: 'flex',
          cursor: 'default',
          alignItems: 'center',
          border: `1px solid ${theme.colors.gray[4]}`,
          paddingLeft: 10,
          borderRadius: 4,
        }}
      >
        <div style={{ marginRight: 10 }}>
          <Flag code={value} size="S" />
        </div>
        <div style={{ lineHeight: 1, fontSize: 12 }}>{label}</div>
        <CloseButton onClick={onRemove} variant="transparent" size={22} iconSize={14} />
      </div>
    </div>
  );
}


function Item({ label, value, elementRef, ...others }) {
  return (
    <div ref={elementRef} {...others}>
      <div style={{ display: 'flex' }}>
        <div style={{ marginRight: 10 }}>
          <Flag code={value} size="S" />
        </div>
        <div>{label}</div>
      </div>
    </div>
  );
}


export function CountriesSelect() {
  return (
    <MultiSelect
      data={countriesData}
      limit={20}
      valueComponent={Value}
      itemComponent={Item}
      searchable
      defaultValue={['US', 'DE']}
      placeholder="Pick countries"
      label="Which countries you visited last year?"
    />
  );
}

Performance

If you have a large data set (> 100 items) you will have to optimize items rendering. The best strategy is to use searchable option with limit:

// Only 20 items are rendered at a time
// See countries list example above
<MultiSelect searchable limit={20} />

Animations

By default dropdown animations are turned off to increase responsiveness. You can enable them by setting optional props:

  • transition – premade transition name or custom transition styles object, see Transition component for all available options
  • transitionDuration – transition duration in ms, defaults to 0
  • transitionTimingFunction – defaults to theme.transitionTimingFunction
<MultiSelect
  transitionDuration={150}
  transition="pop-top-left"
  transitionTimingFunction="ease"
/>

With icon

You can use any React node as icon:

<MultiSelect icon={<HashIcon />} />

Invalid state and error

Pick at least one item
// Error as boolean – red border color
<MultiSelect error />


// Error as React node – red border color and message below input
<MultiSelect error="Pick at least one item" />

Disabled state

In disabled state:

  • options to remove, add or search is disabled
  • input cannot be cleared with clear button
  • cursor is changed to not-allowed
<MultiSelect disabled />

Right section

You can replace icon in right section with rightSection prop. Note that in this case clearable option will not work and will need to handle it yourself:

<MultiSelect rightSection={<ChevronDownIcon />} />

Input props

Component supports all props from Input and InputWrapper components:

Radius
Size
<MultiSelect
  placeholder="Pick all you like"
  label="Your favorite frameworks/libraries"
  required
  data={['React', 'Angular', 'Svelte', 'Vue']}
/>

Get element ref

You can get input ref by passing elementRef prop to Select component:

import { useRef } from 'react';
import { MultiSelect } from '@mantine/core';


function Demo() {
  const ref = useRef(null);
  return <MultiSelect elementRef={ref} />;
}

Server side rendering

Component uses use-id hook to generate unique ids and aria- attributes, provide static id prop to prevent props mismatch:

<MultiSelect /> // -> random id generated both on client and server, props mismatch warning
<MultiSelect id="my-select" /> // -> id is static, no mismatches

Accessibility

Provide aria-label in case you use component without label for screen reader support:

<MultiSelect label="My select" />; // -> ok, select and label is connected
<MultiSelect />; // not ok, select is not labeled
<MultiSelect aria-label="My select" />; // -> ok, label is not visible but will be announced by screen reader

If you use clearable option set clearButtonLabel:

<MultiSelect clearable clearButtonLabel="Clear select field" />
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