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WP_Customize_Manager::grant_edit_post_capability_for_changeset( string[] $caps, string $cap, int $user_id, array $args )

Re-map ‘edit_post’ meta cap for a customize_changeset post to be the same as ‘customize’ maps.

Description

There is essentially a "meta meta" cap in play here, where ‘edit_post’ meta cap maps to the ‘customize’ meta cap which then maps to ‘edit_theme_options’. This is currently required in core for wp_create_post_autosave() because it will call _wp_translate_postdata() which in turn will check if a user can ‘edit_post’, but the the caps for the customize_changeset post type are all mapping to the meta capability. This should be able to be removed once #40922 is addressed in core.

See also

Parameters

$caps

(string[]) (Required) Array of the user's capabilities.

$cap

(string) (Required) Capability name.

$user_id

(int) (Required) The user ID.

$args

(array) (Required) Adds the context to the cap. Typically the object ID.

Return

(array) Capabilities.

Source

File: wp-includes/class-wp-customize-manager.php 

public function grant_edit_post_capability_for_changeset( $caps, $cap, $user_id, $args ) {
		if ( 'edit_post' === $cap && ! empty( $args[0] ) && 'customize_changeset' === get_post_type( $args[0] ) ) {
			$post_type_obj = get_post_type_object( 'customize_changeset' );
			$caps          = map_meta_cap( $post_type_obj->cap->$cap, $user_id );
		}
		return $caps;
	}

Uses

Uses Description
wp-includes/capabilities.php: map_meta_cap()

Maps meta capabilities to primitive capabilities.
wp-includes/post.php: get_post_type()

Retrieves the post type of the current post or of a given post.
wp-includes/post.php: get_post_type_object()

Retrieves a post type object by name.

Changelog

Version Description
4.9.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_customize_manager/grant_edit_post_capability_for_changeset