Overview

FacetWP Radio facetThe radio facet type generates a single-select list of choices.

Available options

Name Description
Data source Where the values live (taxonomy, custom field, post attribute)
Default label Set a label to include an “Any” choice above the other radio buttons. The label is optional: leave it blank to remove the “Any” option. Note: this label is translatable with the facetwp_i18n hook.
Parent term If the facet’s Data source is a hierarchical taxonomy and you want to display only child terms of a specific parent, enter the parent’s term ID. Use only one term ID. (Note: don’t use this in a multilingual setup, because the parent term IDs will be different for each language).
Value modifiers Enter a list of facet values (one per line, without commas) to include or exclude. The values need to match the label (not the slug) of the facet choice exactly, including spaces and capitalization.

For an example, see the explanation below. If your value modifiers don’t work, see this page for more info.
Show ghosts Show choices that would return zero results? See the explanation below.
Preserve ghost order Keep ghost choices in the same order (mixed with valid choices)? By default, ghost choices will appear at the bottom.
Sort by Sort facet choices by:

  • Highest count – sorts by the total number of results with that value.
  • Display value – sorts alphabetically according to the label you see on the facet choices.
  • Raw value – sorts by the value that tracks the facet choices. For example in a dropdown, this is the option value rather than the option label. You can see the raw values in the url after making facet selections.
  • Term order – sorts by taxonomy term order. This option uses term_order which is only available when using a plugin that sets an explicit order for taxonomy terms. FacetWP supports:

    For term_order to work with these plugins, make sure to use an actual taxonomy as the facet’s data source, not an ACF field set to a taxonomy.

To customize the sort order, for example switch the ASC/DESC order, or to sort numerically, you can use the facetwp_facet_orderby hook.
Count The maximum number of choices to display. Default: 10.

If you leave this field empty, the default of 10 will be used. You can set the count as high as you like, but be aware that very high counts can lead to issues with page load performance or usability. If you use -1, FacetWP will load all choices but will limit the maximum count at 1000 for this reason. If you need that many choices, consider using a Search facet or Autocomplete facet instead.

What are value modifiers?

Value modifiers let you include or exclude certain choices from displaying. This setting requires a re-index to take effect.

Below are some examples:

Checkboxes facet with value modifiers

What are ghosts?

Checkboxes facet Show ghosts and Preserve ghost order settingsGhosts are facet choices that do appear in the unfiltered results, but disappear after being filtered out. If a facet choice has no associated posts, then it will never appear.

When “Show ghosts” is enabled, after filtering, facet choices that would return zero results are still shown, but dimmed and not clickable.

By default, the ghosts will appear at the bottom of the list of choices. If you enable “Keep ghost order”, the ghost choices will be shown in the original order (mixed with the other, valid choices), determined by the “Sort by” setting.

Hide counts

To hide the counts for all facets of type Radio, Checkboxes, Hierarchy, and Range List (in UI modes “None”, “Radio” or “Checkboxes”), add this CSS into your theme’s style.css:

How to use custom CSS?
CSS code can be placed in your (child) theme's style.css file. Alternatively, you can add it manually between <style> tags in the <head> section, in your (child) theme's header.php file. You can also load it with a hook in your (child) theme's functions.php file, or in the Custom Hooks add-on. To load the code only on pages with facets, use the facetwp_scripts hook. To load it on all pages, use wp_head or wp_footer.  Or you can use a code snippets plugin. More info
.facetwp-counter {
  display: none;
}

If you need to be specific about which (type of) facet to hide the counts for, use any of the following styles:

How to use custom CSS?
CSS code can be placed in your (child) theme's style.css file. Alternatively, you can add it manually between <style> tags in the <head> section, in your (child) theme's header.php file. You can also load it with a hook in your (child) theme's functions.php file, or in the Custom Hooks add-on. To load the code only on pages with facets, use the facetwp_scripts hook. To load it on all pages, use wp_head or wp_footer.  Or you can use a code snippets plugin. More info
/* Hide counts in all facets with a radio UI (Radio facet, Range List facet in UI modes "None" or "Radio" */
.facetwp-radio .facetwp-counter {
  display: none;
}

/* Hide counts in all Radio facets */
[data-type="radio"] .facetwp-counter {
    display: none;
}

/* Hide counts in a specific Radio facet */
.facetwp-facet-yourfacetname .facetwp-counter {
    display: none;
}

Hide the “Any” option

If you want to hide the “Any” option when there are no other options left, you can use this example code to (in general) hide any facet that has no options left. This code will also hide Radio facets with only the “Any” option left. Just make sure you also disable the “Show ghosts” setting.

Styling Radio facets

Radio facets are easy to style. Just like in for example Checkboxes facets, the icons are not real HTML (<input type="radio">) form elements, but a simple CSS background image applied to a <div>. This background image can be replaced (or removed) with a few lines of CSS.

Below are some examples of how to style Radio facet choices as buttons/pills, or as tabs.

Style Radio facet choices as buttons

If you add the following code to your (child) theme’s functions.php (or the CSS to your style.css file), all Radio facet choices will be styled as buttons/pills, making them look like this:

Radio facet choices styled as buttons/pills.
Radio facet choices styled as buttons/pills.
Radio facet choices styled as buttons/pills when wrapping to multiple rows.
Radio facet choices styled as buttons/pills when wrapping to multiple rows.

The CSS also applies a background-color and border-color on hover and when the choice is selected. It also accounts for the buttons wrapping to multiple rows on smaller screen widths.

How to use custom PHP code?
PHP code can be added to your (child) theme's functions.php file. Alternatively, you can use the Custom Hooks add-on, or a code snippets plugin. More info
add_action( 'facetwp_scripts', function() {
  ?>
  <style>

    .facetwp-radio {
      background: none;
      display: inline-block;
      line-height: 1em;
      padding: 10px 12px; /* top/bottom right/left */
      margin: 0 8px 8px 0; /* top right bottom left */
      border: 1px solid #ddd;
      border-radius: 3px;
    }

    /* Style the hover and 'checked' states */
    .facetwp-radio:hover,
    .facetwp-radio.checked {
      background-image: none;
      background-color: #4f9fdd;
      border-color: #4f9fdd;
      color: #ffffff;
    }

  </style>
  <?php
}, 100 );

Style Radio facet choices as tabs

If you add the following code to your (child) theme’s functions.php (or the CSS to your style.css file), all Radio facet choices will be styled as tabs, making them look like this:

Radio facet choices styled as tabs.
Radio facet choices styled as tabs.
Radio facet choices styled as tabs when wrapping to multiple rows.
Radio facet choices styled as tabs when wrapping to multiple rows.

The CSS also applies a background-color on hover, and a different color when the choice is selected. It also accounts for the tabs wrapping to multiple rows on smaller screen widths.

Lines 6-9 will make the facet container itself fill the whole width of its parent container element, which allows the bottom gray line to fill that whole width. You can remove those lines if you don’t want that to happen.

How to use custom PHP code?
PHP code can be added to your (child) theme's functions.php file. Alternatively, you can use the Custom Hooks add-on, or a code snippets plugin. More info
add_action( 'facetwp_scripts', function() {
  ?>
  <style>

    /* Optionally make the facet take the full width of its container, so it can have a bottom line over the whole width */
    .facetwp-type-radio {
      width: 100%;
      border-bottom: 1px solid #ddd; /* gray */
    }

    .facetwp-radio {
      background: none;
      display: inline-block;
      line-height: 1em;
      padding: 9px 14px; /* top/bottom right/left */
      margin: 15px 0 -1px 10px; /* top right bottom left. The'left' value is the distance between tabs */
      border: 1px solid #ddd; /* gray */
      border-radius: 5px 5px 0 0;
      color: #4f9fdd; /* blue */
      position: relative;
      z-index: 1;
    }

    /* border-bottom line solution that supports wrapping tabs to multiple lines */
    .facetwp-radio:before,
    .facetwp-radio:after {
      content: '';
      display: inline-block;
      border-bottom: 1px solid #ddd; /* gray */
      position: absolute;
      z-index: 0;
      height: 1px;
      width: 12px; /* distance between tabs as set on L16 with margin-left + 2px */
      left: -12px; /* distance between tabs as set on L16 with margin-left + 2px */
      bottom: -1px;
    }

    .facetwp-radio:after{
      left: auto;
      right: -12px; /* (minus) distance between tabs as set on L16 with margin-left + 2px */
    }

    /* Style the tab 'checked' state */
    .facetwp-radio.checked {
      background-image: none;
      background-color: #fff; /* white */
      border-bottom-color: #fff; /* white */
      color: #888; /* dark gray */
    }

    /* Style the tab hover state */
    .facetwp-radio:not(.checked):not(.disabled):hover {
      background-image: none;
      background-color: #4f9fdd;  /* blue */
      border-color: #4f9fdd;  /* blue */
      border-bottom-color: #ddd;  /* gray */
      color: #fff; /* white */
    }

  </style>
  <?php
}, 100 );

See also