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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 |
|---|---|
| 333 | /** |
| 334 | * Filters the search handlers to use in the REST search controller. |
| 335 | * |
| 336 | * @since 5.0.0 |
| 337 | * |
| 338 | * @param array $search_handlers List of search handlers to use in the controller. Each search |
| 339 | * handler instance must extend the `WP_REST_Search_Handler` class. |
| 340 | * Default is only a handler for posts. |
| 341 | */ |
| 342 | $search_handlers = apply_filters( 'wp_rest_search_handlers', $search_handlers ); |
| 343 | |
| 344 | $controller = new WP_REST_Search_Controller( $search_handlers ); |
| 345 | $controller->register_routes(); |
| 346 | |
| 347 | // Block Renderer. |
| 348 | $controller = new WP_REST_Block_Renderer_Controller(); |
| 349 | $controller->register_routes(); |
| 350 | |
| 351 | // Block Types. |