WordPress Version: 6.1
/**
* Builds an object with all post type capabilities out of a post type object
*
* Post type capabilities use the 'capability_type' argument as a base, if the
* capability is not set in the 'capabilities' argument array or if the
* 'capabilities' argument is not supplied.
*
* The capability_type argument can optionally be registered as an array, with
* the first value being singular and the second plural, e.g. array('story, 'stories')
* Otherwise, an 's' will be added to the value for the plural form. After
* registration, capability_type will always be a string of the singular value.
*
* By default, eight keys are accepted as part of the capabilities array:
*
* - edit_post, read_post, and delete_post are meta capabilities, which are then
* generally mapped to corresponding primitive capabilities depending on the
* context, which would be the post being edited/read/deleted and the user or
* role being checked. Thus these capabilities would generally not be granted
* directly to users or roles.
*
* - edit_posts - Controls whether objects of this post type can be edited.
* - edit_others_posts - Controls whether objects of this type owned by other users
* can be edited. If the post type does not support an author, then this will
* behave like edit_posts.
* - delete_posts - Controls whether objects of this post type can be deleted.
* - publish_posts - Controls publishing objects of this post type.
* - read_private_posts - Controls whether private objects can be read.
*
* These five primitive capabilities are checked in core in various locations.
* There are also six other primitive capabilities which are not referenced
* directly in core, except in map_meta_cap(), which takes the three aforementioned
* meta capabilities and translates them into one or more primitive capabilities
* that must then be checked against the user or role, depending on the context.
*
* - read - Controls whether objects of this post type can be read.
* - delete_private_posts - Controls whether private objects can be deleted.
* - delete_published_posts - Controls whether published objects can be deleted.
* - delete_others_posts - Controls whether objects owned by other users can be
* can be deleted. If the post type does not support an author, then this will
* behave like delete_posts.
* - edit_private_posts - Controls whether private objects can be edited.
* - edit_published_posts - Controls whether published objects can be edited.
*
* These additional capabilities are only used in map_meta_cap(). Thus, they are
* only assigned by default if the post type is registered with the 'map_meta_cap'
* argument set to true (default is false).
*
* @since 3.0.0
* @since 5.4.0 'delete_posts' is included in default capabilities.
*
* @see register_post_type()
* @see map_meta_cap()
*
* @param object $args Post type registration arguments.
* @return object Object with all the capabilities as member variables.
*/
function get_post_type_capabilities($args)
{
if (!is_array($args->capability_type)) {
$args->capability_type = array($args->capability_type, $args->capability_type . 's');
}
// Singular base for meta capabilities, plural base for primitive capabilities.
list($singular_base, $plural_base) = $args->capability_type;
$default_capabilities = array(
// Meta capabilities.
'edit_post' => 'edit_' . $singular_base,
'read_post' => 'read_' . $singular_base,
'delete_post' => 'delete_' . $singular_base,
// Primitive capabilities used outside of map_meta_cap():
'edit_posts' => 'edit_' . $plural_base,
'edit_others_posts' => 'edit_others_' . $plural_base,
'delete_posts' => 'delete_' . $plural_base,
'publish_posts' => 'publish_' . $plural_base,
'read_private_posts' => 'read_private_' . $plural_base,
);
// Primitive capabilities used within map_meta_cap():
if ($args->map_meta_cap) {
$default_capabilities_for_mapping = array('read' => 'read', 'delete_private_posts' => 'delete_private_' . $plural_base, 'delete_published_posts' => 'delete_published_' . $plural_base, 'delete_others_posts' => 'delete_others_' . $plural_base, 'edit_private_posts' => 'edit_private_' . $plural_base, 'edit_published_posts' => 'edit_published_' . $plural_base);
$default_capabilities = array_merge($default_capabilities, $default_capabilities_for_mapping);
}
$capabilities = array_merge($default_capabilities, $args->capabilities);
// Post creation capability simply maps to edit_posts by default:
if (!isset($capabilities['create_posts'])) {
$capabilities['create_posts'] = $capabilities['edit_posts'];
}
// Remember meta capabilities for future reference.
if ($args->map_meta_cap) {
_post_type_meta_capabilities($capabilities);
}
return (object) $capabilities;
}