API Reference / InstantSearch.js Widgets / toggleRefinement
Aug. 23, 2019

toggleRefinement

Widget signature
instantsearch.widgets.toggleRefinement({
  container: string|HTMLElement,
  attribute: string,
  // Optional parameters
  on: boolean|number|string,
  off: boolean|number|string,
  templates: object,
  cssClasses: object,
});

About this widget

The toggleRefinement widget provides an on/off filtering feature based on an attribute value.

Examples

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instantsearch.widgets.toggleRefinement({
  container: '#toggle-refinement',
  attribute: 'free_shipping',
  templates: {
    labelText: 'Free shipping',
  },
});

Options

container
type: string|HTMLElement
Required

The CSS Selector or HTMLElement to insert the widget into.

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instantsearch.widgets.toggleRefinement({
  // ...
  container: '#toggle-refinement',
});
attribute
type: string
Required

The name of the attribute on which apply the refinement.

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instantsearch.widgets.toggleRefinement({
  // ...
  attribute: 'free_shipping',
});
on
type: boolean|number|string
default: true
Optional

The value of the refinement to apply on the attribute when checked.

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instantsearch.widgets.toggleRefinement({
  // ...
  on: false,
});
off
type: boolean|number|string
Optional

The value of the refinement to apply on the attribute when unchecked.

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instantsearch.widgets.toggleRefinement({
  // ...
  off: false,
});
templates
type: object
Optional

The templates to use for the widget.

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instantsearch.widgets.toggleRefinement({
  // ...
  templates: {
    // ...
  },
});
cssClasses
type: object
default: {}
Optional

The CSS classes to override.

  • root: the root element of the widget.
  • label: the label of the toggle.
  • checkbox: the checkbox element of the toggle.
  • labelText: the label text of the toggle.
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instantsearch.widgets.toggleRefinement({
  // ...
  cssClasses: {
    root: 'MyCustomToggleRefinement',
    label: [
      'MyCustomToggleRefinementLabel',
      'MyCustomToggleRefinementLabel--subclass',
    ],
  },
});

Templates

labelText
type: string|function
Optional

The template to use to customize the label. It exposes:

  • isRefined: boolean: indicates whether or not the checkbox is checked.
  • count: number: shows the number of results after the refinement was applied.
  • onFacetValue: object: describes the value for the attribute. It contains count (useful to get the raw value of the count).
  • offFacetValue: object: describes the value for the attribute. It contains count (useful to get the raw value of the count).
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instantsearch.widgets.toggleRefinement({
  // ...
  templates: {
    labelText: 'Free shipping ({{ count }})',
  },
});

HTML output

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<div class="ais-ToggleRefinement">
  <label class="ais-ToggleRefinement-label">
    <input class="ais-ToggleRefinement-checkbox" type="checkbox" />
    <span class="ais-ToggleRefinement-labelText">Free Shipping</span>
    <span class="ais-ToggleRefinement-count">18,013</span>
  </label>
</div>

Customize the UI - connectToggleRefinement

If you want to create your own UI of the toggleRefinement widget, you can use connectors.

It’s a 3-step process:

// 1. Create a render function
const renderToggleRefinement = (renderOptions, isFirstRender) => {
  // Rendering logic
};

// 2. Create the custom widget
const customToggleRefinement = instantsearch.connectors.connectToggleRefinement(
  renderToggleRefinement
);

// 3. Instantiate
search.addWidgets([
  customToggleRefinement({
    // instance params
  })
]);

Create a render function

This rendering function is called before the first search (init lifecycle step) and each time results come back from Algolia (render lifecycle step).

const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const {
    object value,
    function refine,
    function createURL,
    object widgetParams,
  } = renderOptions;

  if (isFirstRender) {
    // Do some initial rendering and bind events
  }

  // Render the widget
}

Rendering options

value
type: object

The current refinement, with:

  • isRefined: boolean: indicates whether or not the checkbox is checked.
  • count: number: shows the number of results after the refinement was applied.
  • onFacetValue: object: describes the value for the attribute. It contains count (useful to get the raw value of the count).
  • offFacetValue: object: describes the value for the attribute. It contains count (useful to get the raw value of the count).
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const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const { value } = renderOptions;

  document.querySelector('#toggle-refinement').innerHTML = `
    <label>
      <input type="checkbox" ${value.isRefined ? 'checked' : ''} />
      Free shipping (${value.count})
    </label>
  `;
};
refine
type: function

Updates to the next state by applying the toggle refinement.

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const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const { value, refine } = renderOptions;
  const container = document.querySelector('#toggle-refinement');

  if (isFirstRender) {
    const label = document.createElement('label');
    const input = document.createElement('input');
    input.type = 'checkbox';

    input.addEventListener('change', event => {
      refine({ isRefined: !event.target.checked });
    });

    label.appendChild(input);
    label.appendChild(document.createTextNode('Free shipping'));
    container.appendChild(label);
  }

  container.querySelector('input').checked = value.isRefined;
};
createURL
type: function

Generates a URL for the next state.

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const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const { createURL } = renderOptions;

  document.querySelector('#toggle-refinement').innerHTML = `
    <a href="${createURL()}">Link to the next state</a>
  `;
};
widgetParams
type: object

All original widget options forwarded to the render function.

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const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const { widgetParams } = renderOptions;

  widgetParams.container.innerHTML = '...';
};

// ...

search.addWidgets([
  customToggleRefinement({
    container: document.querySelector('#toggle-refinement'),
  })
]);

Create and instantiate the custom widget

We first create custom widgets from our rendering function, then we instantiate them. When doing that, there are two types of parameters you can give:

  • Instance parameters: they are predefined parameters that you can use to configure the behavior of Algolia.
  • Your own parameters: to make the custom widget generic.

Both instance and custom parameters are available in connector.widgetParams, inside the renderFunction.

const customToggleRefinement = instantsearch.connectors.connectToggleRefinement(
  renderToggleRefinement
);

search.addWidgets([
  customToggleRefinement({
    attribute: string,
    // Optional parameters
    on: boolean|number|string,
    off: boolean|number|string,
  })
]);

Instance options

attribute
type: string
Required

The name of the attribute on which to apply the refinement.

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customToggleRefinement({
  attribute: 'free_shipping',
});
on
type: boolean|number|string
default: true
Optional

The value of the refinement to apply on the attribute when checked.

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customToggleRefinement({
  // ...
  on: false,
});
off
type: boolean|number|string
Optional

The value of the refinement to apply on the attribute when unchecked.

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customToggleRefinement({
  // ...
  off: false,
});

Full example

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// Create the render function
const renderToggleRefinement = (renderOptions, isFirstRender) => {
  const { value, refine, widgetParams } = renderOptions;

  if (isFirstRender) {
    const label = document.createElement('label');
    const input = document.createElement('input');
    input.type = 'checkbox';

    const span = document.createElement('span');

    input.addEventListener('change', event => {
      refine({ isRefined: !event.target.checked });
    });

    label.appendChild(input);
    label.appendChild(document.createTextNode('Free shipping'));
    label.appendChild(span);

    widgetParams.container.appendChild(label);
  }

  widgetParams.container.querySelector('input').checked = value.isRefined;
  widgetParams.container.querySelector('span').innerHTML =
    value.count !== null ? ` (${value.count})` : '';
};

// Create the custom widget
const customToggleRefinement = instantsearch.connectors.connectToggleRefinement(
  renderToggleRefinement
);

// Instantiate the custom widget
search.addWidgets([
  customToggleRefinement({
    container: document.querySelector('#toggle-refinement'),
    attribute: 'free_shipping',
  })
]);

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