Fixed issues with preview links not registering ACF post types. Refactored so setting the initial allowed post types fires after ACF registers post types.

Author: colinmurphy

plugins/hwp-previews/src/Hooks/Preview_Hooks.php

@@ -78,6 +78,20 @@ public function setup(): void {
 		add_filter( 'page_attributes_dropdown_pages_args', [ $this, 'enable_post_statuses_as_parent' ], 10, 1 );
 		add_filter( 'quick_edit_dropdown_pages_args', [ $this, 'enable_post_statuses_as_parent' ], 10, 1 );
 
+		// iframe preview functionality.
+		add_filter( 'template_include', [ $this, 'add_iframe_preview_template' ], 10, 1 );
+
+		// Preview link functionality. Extra priority to ensure it runs after the Faust preview link filter.
+		add_filter( 'preview_post_link', [ $this, 'update_preview_post_link' ], 1001, 2 );
+
+		// Setup the post-type dependent hooks.
+		add_action( 'init', [ $this, 'setup_post_type_hooks' ], 20, 0 );
+	}
+
+	/**
+	 * Setup the post-type dependent hooks.`
+	 */
+	public function setup_post_type_hooks(): void {
 		$post_editor_service = new Post_Editor_Service();
 		$post_types          = $this->post_preview_service->get_post_types();
 
@@ -90,13 +104,6 @@ public function setup(): void {
 			add_filter( 'rest_' . $post_type . '_query', [ $this, 'enable_post_statuses_as_parent' ], 10, 1 );
 		}
 
-		// iframe preview functionality.
-		add_filter( 'template_include', [ $this, 'add_iframe_preview_template' ], 10, 1 );
-
-		// Preview link functionality. Extra priority to ensure it runs after the Faust preview link filter.
-		add_filter( 'preview_post_link', [ $this, 'update_preview_post_link' ], 1001, 2 );
-
-
 		/**
 		 * Hack Function that changes the preview link for draft articles,
 		 * this must be removed when properly fixed https://github.com/WordPress/gutenberg/issues/13998.

plugins/hwp-previews/src/Preview/Post/Post_Preview_Service.php

@@ -35,21 +35,14 @@ class Post_Preview_Service {
 	 */
 	protected $parent_post_statuses = [];
 
-	/**
-	 * @return array<string>
-	 */
-	public function get_allowed_post_types(): array {
-		return $this->get_post_types();
-	}
-
 	/**
 	 * Get the post-statuses.
 	 *
 	 * @return array<string>
 	 */
 	public function get_post_statuses(): array {
 		$post_statuses = $this->post_statuses;
-		if ([] !== $post_statuses) {
+		if ( [] !== $post_statuses ) {
 			return $post_statuses;
 		}
 		$this->set_post_statuses();
@@ -63,7 +56,7 @@ public function get_post_statuses(): array {
 	 */
 	public function get_post_types(): array {
 		$post_types = $this->post_types;
-		if ([] !== $post_types) {
+		if ( [] !== $post_types ) {
 			return $post_types;
 		}
 		$this->set_post_types();
@@ -77,7 +70,7 @@ public function get_post_types(): array {
 	 */
 	public function get_parent_post_statuses(): array {
 		$parent_post_statuses = $this->parent_post_statuses;
-		if ([] !== $parent_post_statuses) {
+		if ( [] !== $parent_post_statuses ) {
 			return $parent_post_statuses;
 		}
 		$this->set_post_parent_statuses();

plugins/hwp-previews/tests/wpunit/Hooks/PreviewHooksTest.php

@@ -574,4 +574,45 @@ public function test_filter_rest_prepare_link_no_link_previews_no_preview_url()
 		$this->assertArrayNotHasKey( 'link', $data );
 		$this->assertEquals( $original_response, $response );
 	}
+
+	public function test_setup_post_type_hooks_adds_filters_for_enabled_post_types() {
+		// Create a custom post type to test with
+		register_post_type( 'test_cpt', [
+			'public'       => true,
+			'show_in_rest' => true,
+			'supports'     => [ 'editor' ], // This enables Gutenberg
+		] );
+
+		$test_config = [
+			'post' => [
+				Settings_Field_Collection::ENABLED_FIELD_ID     => true,
+				Settings_Field_Collection::PREVIEW_URL_FIELD_ID => 'https://localhost:3000/post?preview=true&post_id={ID}&status={status}',
+			],
+			'test_cpt' => [
+				Settings_Field_Collection::ENABLED_FIELD_ID     => true,
+				Settings_Field_Collection::PREVIEW_URL_FIELD_ID => 'https://localhost:3000/cpt?preview=true&post_id={ID}&status={status}',
+			]
+		];
+		update_option( $this->test_option_key, $test_config );
+
+		// Remove any existing filters to have a clean slate
+		remove_all_filters( 'rest_post_query' );
+		remove_all_filters( 'rest_test_cpt_query' );
+		remove_all_filters( 'rest_prepare_post' );
+		remove_all_filters( 'rest_prepare_test_cpt' );
+
+		$preview_hooks = new Preview_Hooks();
+
+		// Call the method we're testing
+		$preview_hooks->setup_post_type_hooks();
+
+		// Assert that the filters were added for post types that support Gutenberg
+		$this->assertTrue( has_filter( 'rest_post_query', [ $preview_hooks, 'enable_post_statuses_as_parent' ] ) !== false );
+		$this->assertTrue( has_filter( 'rest_test_cpt_query', [ $preview_hooks, 'enable_post_statuses_as_parent' ] ) !== false );
+		$this->assertTrue( has_filter( 'rest_prepare_post', [ $preview_hooks, 'filter_rest_prepare_link' ] ) !== false );
+		$this->assertTrue( has_filter( 'rest_prepare_test_cpt', [ $preview_hooks, 'filter_rest_prepare_link' ] ) !== false );
+
+		// Clean up
+		unregister_post_type( 'test_cpt' );
+	}
 }

plugins/hwp-previews/tests/wpunit/Preview/Post/PostPreviewServiceTest.php

@@ -31,13 +31,6 @@ public function remove_all_filters() {
 		remove_all_filters( 'hwp_previews_filter_available_post_statuses' );
 	}
 
-	public function test_get_allowed_post_types_returns_array(): void {
-		$result = $this->service->get_allowed_post_types();
-
-		$this->assertIsArray( $result );
-		$this->assertNotEmpty( $result );
-	}
-
 	public function test_get_post_statuses_returns_default_statuses(): void {
 		$result = $this->service->get_post_statuses();
 
@@ -65,13 +58,6 @@ public function test_get_parent_post_statuses_returns_default_statuses(): void {
 		$this->assertEquals($expected, $result);
 	}
 
-	public function test_get_post_types_returns_same_as_get_allowed_post_types(): void {
-		$allowed_types = $this->service->get_allowed_post_types();
-		$post_types = $this->service->get_post_types();
-
-		$this->assertEquals($allowed_types, $post_types);
-	}
-
 	public function test_post_types_filter_is_applied(): void {
 		$custom_post_types = ['custom_post' => 'Custom Post Type'];
 		add_filter('hwp_previews_filter_available_post_types', function() use ($custom_post_types) {