Joomla! Programmers Documentation

The templatestyle form field type provides a dropdown list of template style options

• type (mandatory) must be templatestyle.
• name (mandatory) is the unique name of the field.
• label (mandatory) (translatable) is the field html label.
• description (optional) (translatable) is the field description.
• client (optional) site or administrator, defaults to site.
• class (optional) for styling.
• multiple (optional) is whether multiple items can be selected at the same time (true or false). In Joomla 4 it is recommended to use additionally layout="joomla.form.field.groupedlist-fancy-select" in the field declaration (replacement for the 'chosen' library used previously).

Implemented by: libraries/src/Form/Field/TemplatestyleField.php

Example XML parameter definition¶

<field
        name="admin_style" 
        type="templatestyle"
        client="administrator"
        description="COM_ADMIN_USER_FIELD_BACKEND_TEMPLATE_DESC"
        label="COM_ADMIN_USER_FIELD_BACKEND_TEMPLATE_LABEL" 
        >
        <option value="">JOPTION_USE_DEFAULT</option>
</field>