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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 304 | /** |
| 305 | * Filters the search handlers to use in the REST search controller. |
| 306 | * |
| 307 | * @since 5.0.0 |
| 308 | * |
| 309 | * @param array $search_handlers List of search handlers to use in the controller. Each search |
| 310 | * handler instance must extend the `WP_REST_Search_Handler` class. |
| 311 | * Default is only a handler for posts. |
| 312 | */ |
| 313 | $search_handlers = apply_filters( 'wp_rest_search_handlers', $search_handlers ); |
| 314 | |
| 315 | $controller = new WP_REST_Search_Controller( $search_handlers ); |
| 316 | $controller->register_routes(); |
| 317 | |
| 318 | // Block Renderer. |
| 319 | $controller = new WP_REST_Block_Renderer_Controller(); |
| 320 | $controller->register_routes(); |
| 321 | |
| 322 | // Block Types. |