Facets layouts: radio boxes, check boxes

Radio boxes and checkboxes are simple layouts used to show texts as a list of selectable items.

Check boxes enable to select several items of the same facet. It can be used in two situations:

• The facet items are multivalued: a post can have several values for the attribute or custom value. For instance a t-shirt size, a shoe colour. If the colour attribute checkboxes ‘red’ and ‘green’ are both selected, shoes with both colours will be shown in the search results.
• The facet has been configured with a ‘OR’: results from a multi-selection are aggregated, rather than intersected.

Radio boxes, on the contrary,  prevent multi-selection of items. Only red shoes can be selected, or green shoes, but not both.