API Reference / React InstantSearch Widgets / NumericMenu
Aug. 23, 2019

NumericMenu

Widget signature
<NumericMenu
  attribute={string}
  items={object[]}
  // Optional parameters
  defaultRefinement={string}
  transformItems={function}
  translations={object}
/>

About this widget

The NumericMenu widget displays a list of numeric filters in a list. Those numeric filters are pre-configured when creating the widget.

Requirements

The values inside the attribute must be numbers, not strings.

Examples

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import { NumericMenu } from 'react-instantsearch-dom';

<NumericMenu
  attribute="price"
  items={[
    { label: '<= $10', end: 10 },
    { label: '$10 - $100', start: 10, end: 100 },
    { label: '$100 - $500', start: 100, end: 500 },
    { label: '>= $500', start: 500 },
  ]}
/>

Props

attribute
type: string
Required

The name of the attribute in the record.

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<NumericMenu
  // ...
  attribute="price"
/>
items
type: object[]
Required

The list of ranges availables. Both start and end can be omitted inside the item. Only label is required.

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<NumericMenu
  // ...
  items={[
    { label: '<= $10', end: 10 },
    { label: '$10 - $100', start: 10, end: 100 },
    { label: '$100 - $500', start: 100, end: 500 },
    { label: '>= $500', start: 500 },
  ]}
/>
defaultRefinement
type: string
Optional

The value of the item selected by default. This is a string with the shape "start:end", e.g., "5:10" or ":20".

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<NumericMenu
  // ...
  defaultRefinement="10:100"
/>
transformItems
type: function
Optional

Modifies the items being displayed, for example, to filter or sort them. It takes items as argument and expects them back in return.

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<NumericMenu
  // ...
  transformItems={items =>
    items.map(item => ({
      ...item,
      label: item.label.toUpperCase(),
    }))
  }
/>
translations
type: object
Optional

A mapping of keys to translation values.

  • all: the label of the largest range added automatically
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<NumericMenu
  // ...
  translations={{
    all: 'All',
  }}
/>

HTML output

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<div class="ais-NumericMenu">
  <ul class="ais-NumericMenu-list">
    <li class="ais-NumericMenu-item ais-NumericMenu-item--selected">
      <label class="ais-NumericMenu-label">
        <input
          class="ais-NumericMenu-radio"
          type="radio"
          name="NumericMenu"
          checked
        />
        <span class="ais-NumericMenu-labelText">All</span>
      </label>
    </li>
    <li class="ais-NumericMenu-item">
      <label class="ais-NumericMenu-label">
        <input
          class="ais-NumericMenu-radio"
          type="radio"
          name="NumericMenu"
        />
        <span class="ais-NumericMenu-labelText">Less than 500</span>
      </label>
    </li>
  </ul>
</div>

Customize the UI - connectNumericMenu

If you want to create your own UI of the NumericMenu widget or use another UI library, you can use connectors.

Connectors are higher-order components. They encapsulate the logic for a specific kind of widget and they provide a way to interact with the InstantSearch context.

They have an outer component API that we call exposed props, and they provide some other props to the wrapped components which are called the provided props.

It’s a 3-step process:

// 1. Create a React component
const NumericMenu = () => {
  // return the DOM output
};

// 2. Connect the component using the connector
const CustomNumericMenu = connectNumericMenu(NumericMenu);

// 3. Use your connected widget
<CustomNumericMenu />

Create a React component

const NumericMenu = ({
  object[] items,
  string currentRefinement,
  function refine,
  function createURL,
}) => {
  // return the DOM output
};

Provided Props

items
type: object[]

The list of items the widget can display, with each item:

  • label: string: the label of the range.
  • value: string: the value of the range with the shape "start:end". When start is not applied, it’s ":end", same with "start:". When neither is applied, it’s an empty string.
  • isRefined: boolean: whether or not the value is currently refined.
  • noRefinement: boolean: whether or not the range contains results.
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const NumericMenu = ({ items }) => (
  <ul>
    {items.map(item => (
      <li key={item.value}>
        <a href="#" style={{ fontWeight: item.isRefined ? 'bold' : '' }}>
          {item.label}
        </a>
      </li>
    ))}
  </ul>
);
currentRefinement
type: string

The currently applied refinement. It is a string with the shape "start:end". When start is not applied, it’s ":end", same with "start:". When neither is applied, it’s an empty string.

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const NumericMenu = ({ items, currentRefinement, refine }) => (
  <div>
    Current refinement: <code>{currentRefinement}</code>
    <ul>
      {items.map(item => (
        <li key={item.value}>
          <a
            href="#"
            style={{ fontWeight: item.isRefined ? 'bold' : '' }}
            onClick={event => {
              event.preventDefault();
              refine(item.value);
            }}
          >
            {item.label}
          </a>
        </li>
      ))}
    </ul>
  </div>
);
refine
type: function

Selects a refinement.

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const NumericMenu = ({ items, refine }) => (
  <ul>
    {items.map(item => (
      <li key={item.value}>
        <a
          href="#"
          style={{ fontWeight: item.isRefined ? 'bold' : '' }}
          onClick={event => {
            event.preventDefault();
            refine(item.value);
          }}
        >
          {item.label}
        </a>
      </li>
    ))}
  </ul>
);
createURL
type: function

Generates a URL for the corresponding search state.

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const NumericMenu = ({ items, createURL }) => (
  <ul>
    {items.map(item => (
      <li key={item.value}>
        <a href={createURL(item.value)}>{item.label}</a>
      </li>
    ))}
  </ul>
);

Create and instantiate your connected widget

const CustomNumericMenu = connectNumericMenu(NumericMenu);

<CustomNumericMenu
  attribute={string}
  items={object[]}
  // optional parameters
  defaultRefinement={string}
  transformItems={function}
/>

Exposed Props

Props

attribute
type: string
Required

The name of the attribute in the record.

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<CustomNumericMenu
  // ...
  attribute="price"
/>
items
type: object[]
Required

The list of available ranges. Both start and end can be omitted inside the item. Only label is required.

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<CustomNumericMenu
  // ...
  items={[
    { label: '<= $10', end: 10 },
    { label: '$10 - $100', start: 10, end: 100 },
    { label: '$100 - $500', start: 100, end: 500 },
    { label: '>= $500', start: 500 },
  ]}
/>
defaultRefinement
type: string
Optional

The value of the item selected by default. This is a string with the shape "start:end", e.g., "5:10" or ":20".

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<CustomNumericMenu
  // ...
  defaultRefinement="10:100"
/>
transformItems
type: function
Optional

Modifies the items being displayed, for example, to filter or sort them. It takes items as argument and expects them back in return.

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<CustomNumericMenu
  // ...
  transformItems={items =>
    items.map(item => ({
      ...item,
      label: item.label.toUpperCase(),
    }))
  }
/>

Full example

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import { connectNumericMenu } from 'react-instantsearch-dom';

const NumericMenu = ({ items, refine, createURL }) => (
  <ul>
    {items.map(item => (
      <li key={item.value}>
        <a
          href={createURL(item.value)}
          style={{ fontWeight: item.isRefined ? 'bold' : '' }}
          onClick={event => {
            event.preventDefault();
            refine(item.value);
          }}
        >
          {item.label}
        </a>
      </li>
    ))}
  </ul>
);

const CustomNumericMenu = connectNumericMenu(NumericMenu);

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