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<?php |
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|
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/** |
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* Core class used to access templates via the REST API before WordPress 7.2. |
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* |
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* This class extension exists to prevent a fatal error when a `null` template |
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* reaches `prepare_item_for_response`, which reads and assigns properties on |
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* it. Core's `update_item` can pass `null` there from either of its two |
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* unchecked `get_block_template()` refetches: after writing an update, and on |
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* its "revert to theme" path, which force-deletes the template's post before |
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* checking that a theme or plugin version of the template exists. |
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* |
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* |
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* @see WP_REST_Templates_Controller |
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*/ |
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class Gutenberg_REST_Templates_Controller_7_2 extends WP_REST_Templates_Controller { |
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/** |
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* Prepares a single template output for response. |
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* |
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* @since 5.8.0 |
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* @since 7.2.0 Answers with an error response instead of a fatal error |
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* when the template is `null`. |
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* |
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* @param WP_Block_Template|null $item Template instance. |
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* @param WP_REST_Request $request Request object. |
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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error when the template is `null`. |
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*/ |
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public function prepare_item_for_response( $item, $request ) { |
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////////////////////////////// |
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// START CORE MODIFICATIONS // |
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////////////////////////////// |
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/* |
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* Core's `update_item` passes its `get_block_template()` refetches |
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* here unchecked, both after writing an update and after deleting |
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* the post on its revert path. Reading `$item->content` on `null` |
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* is a fatal error, so answer with an error response instead. |
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*/ |
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if ( ! $item ) { |
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return new WP_Error( 'rest_template_not_found', __( 'No templates exist with that id.' ), array( 'status' => 404 ) ); |
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} |
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////////////////////////////// |
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// END CORE MODIFICATIONS // |
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////////////////////////////// |
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|
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return parent::prepare_item_for_response( $item, $request ); |
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} |
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} |
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