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<?php |
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/** |
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* Admin AJAX Controller for TablePress with functionality for the AJAX backend |
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* |
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* @package TablePress |
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* @subpackage Controllers |
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* @author Tobias Bäthge |
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* @since 1.0.0 |
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*/ |
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|
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// Prohibit direct script loading. |
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defined( 'ABSPATH' ) || die( 'No direct script access allowed!' ); |
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|
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/** |
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* Admin AJAX Controller class, extends Base Controller Class |
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* @package TablePress |
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* @subpackage Controllers |
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* @author Tobias Bäthge |
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* @since 1.0.0 |
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*/ |
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class TablePress_Admin_AJAX_Controller extends TablePress_Controller { |
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|
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/** |
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* Initiate Admin AJAX functionality. |
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* |
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* @since 1.0.0 |
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*/ |
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public function __construct() { |
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// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
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ob_start(); |
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|
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parent::__construct(); |
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|
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$ajax_actions = array( 'hide_message', 'save_table', 'preview_table' ); |
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foreach ( $ajax_actions as $action ) { |
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add_action( "wp_ajax_tablepress_{$action}", array( $this, "ajax_action_{$action}" ) ); |
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} |
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} |
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|
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/** |
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* Hide a header message on an admin screen. |
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* |
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* @since 1.0.0 |
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*/ |
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public function ajax_action_hide_message() { |
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if ( empty( $_GET['item'] ) ) { |
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wp_die( '0' ); |
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} |
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|
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$message_item = $_GET['item']; |
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|
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TablePress::check_nonce( 'hide_message', $message_item, '_wpnonce', true ); |
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|
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if ( ! current_user_can( 'tablepress_list_tables' ) ) { |
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wp_die( '-1' ); |
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} |
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|
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TablePress::$model_options->update( "message_{$message_item}", false ); |
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|
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wp_die( '1' ); |
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} |
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|
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/** |
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* Save the table after the "Save Changes" button on the "Edit" screen has been clicked. |
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* |
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* @since 1.0.0 |
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*/ |
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public function ajax_action_save_table() { |
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if ( empty( $_POST['tablepress']['id'] ) ) { |
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wp_die( '-1' ); |
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} |
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|
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$edit_table = wp_unslash( $_POST['tablepress'] ); |
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|
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// Check if the submitted nonce matches the generated nonce we created earlier, dies -1 on failure. |
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TablePress::check_nonce( 'edit', $edit_table['id'], '_ajax_nonce', true ); |
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|
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// Ignore the request if the current user doesn't have sufficient permissions. |
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if ( ! current_user_can( 'tablepress_edit_table', $edit_table['id'] ) ) { |
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wp_die( '-1' ); |
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} |
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|
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// Default response data. |
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$success = false; |
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$message = 'error_save'; |
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$error_details = ''; |
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do { // to be able to "break;" (allows for better readable code) |
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// Load table, without table data, but with options and visibility settings. |
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$existing_table = TablePress::$model_table->load( $edit_table['id'], false, true ); |
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if ( is_wp_error( $existing_table ) ) { // maybe somehow load a new table here? (TablePress::$model_table->get_table_template())? |
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// Add an error code to the existing WP_Error. |
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$existing_table->add( 'ajax_save_table_load', '', $edit_table['id'] ); |
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$error_details = $this->get_wp_error_string( $existing_table ); |
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break; |
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} |
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|
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// Check and convert data that was transmitted as JSON. |
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if ( empty( $edit_table['data'] ) |
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|| empty( $edit_table['options'] ) |
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|| empty( $edit_table['visibility'] ) ) { |
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// Create a new WP_Error. |
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$empty_data_error = new WP_Error( 'ajax_save_table_data_empty', '', $edit_table['id'] ); |
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$error_details = $this->get_wp_error_string( $empty_data_error ); |
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break; |
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} |
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$edit_table['data'] = (array) json_decode( $edit_table['data'], true ); |
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$edit_table['options'] = (array) json_decode( $edit_table['options'], true ); |
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$edit_table['visibility'] = (array) json_decode( $edit_table['visibility'], true ); |
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|
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// Check consistency of new table, and then merge with existing table. |
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$table = TablePress::$model_table->prepare_table( $existing_table, $edit_table, true ); |
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if ( is_wp_error( $table ) ) { |
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// Add an error code to the existing WP_Error. |
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$table->add( 'ajax_save_table_prepare', '', $edit_table['id'] ); |
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$error_details = $this->get_wp_error_string( $table ); |
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break; |
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} |
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|
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// DataTables Custom Commands can only be edited by trusted users. |
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if ( ! current_user_can( 'unfiltered_html' ) ) { |
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$table['options']['datatables_custom_commands'] = $existing_table['options']['datatables_custom_commands']; |
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} |
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|
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// Save updated table. |
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$saved = TablePress::$model_table->save( $table ); |
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if ( is_wp_error( $saved ) ) { |
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// Add an error code to the existing WP_Error. |
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$saved->add( 'ajax_save_table_save', '', $table['id'] ); |
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$error_details = $this->get_wp_error_string( $saved ); |
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break; |
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} |
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|
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// At this point, the table was saved successfully, possible ID change remains. |
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$success = true; |
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$message = 'success_save'; |
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|
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// Check if ID change is desired. |
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if ( $table['id'] === $table['new_id'] ) { |
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// If not, we are done. |
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break; |
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} |
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|
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// Change table ID. |
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if ( current_user_can( 'tablepress_edit_table_id', $table['id'] ) ) { |
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$id_changed = TablePress::$model_table->change_table_id( $table['id'], $table['new_id'] ); |
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if ( ! is_wp_error( $id_changed ) ) { |
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$message = 'success_save_success_id_change'; |
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$table['id'] = $table['new_id']; |
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} else { |
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$message = 'success_save_error_id_change'; |
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// Add an error code to the existing WP_Error. |
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$id_changed->add( 'ajax_save_table_id_change', '', $table['new_id'] ); |
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$error_details = $this->get_wp_error_string( $id_changed ); |
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} |
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} else { |
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$message = 'success_save_error_id_change'; |
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$error_details = 'table_id_could_not_be_changed: capability_check_failed'; |
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} |
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} while ( false ); // Do-while-loop through this exactly once, to be able to "break;" early. |
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|
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// Generate the response. |
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|
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// Common data for all responses. |
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$response = array( |
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'success' => $success, |
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'message' => $message, |
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); |
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if ( $success ) { |
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$response['table_id'] = $table['id']; |
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$response['new_edit_nonce'] = wp_create_nonce( TablePress::nonce( 'edit', $table['id'] ) ); |
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$response['new_preview_nonce'] = wp_create_nonce( TablePress::nonce( 'preview_table', $table['id'] ) ); |
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$response['last_modified'] = TablePress::format_datetime( $table['last_modified'] ); |
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$response['last_editor'] = TablePress::get_user_display_name( $table['options']['last_editor'] ); |
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} |
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if ( ! empty( $error_details ) ) { |
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$response['error_details'] = esc_html( $error_details ); |
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} |
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// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
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$output_buffer = ob_get_clean(); |
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if ( ! empty( $output_buffer ) ) { |
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$response['output_buffer'] = $output_buffer; |
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} |
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|
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// Send the response. |
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wp_send_json( $response ); |
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} |
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|
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/** |
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* Return the live preview data of table that has non-saved changes. |
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* |
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* @since 1.0.0 |
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*/ |
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public function ajax_action_preview_table() { |
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if ( empty( $_POST['tablepress']['id'] ) ) { |
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wp_die( '-1' ); |
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} |
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|
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$preview_table = wp_unslash( $_POST['tablepress'] ); |
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|
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// Check if the submitted nonce matches the generated nonce we created earlier, dies -1 on failure. |
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TablePress::check_nonce( 'preview_table', $preview_table['id'], '_ajax_nonce', true ); |
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|
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// Ignore the request if the current user doesn't have sufficient permissions. |
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if ( ! current_user_can( 'tablepress_preview_table', $preview_table['id'] ) ) { |
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wp_die( '-1' ); |
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} |
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|
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// Default response data. |
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$success = false; |
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do { // to be able to "break;" (allows for better readable code) |
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// Load table, without table data, but with options and visibility settings. |
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$existing_table = TablePress::$model_table->load( $preview_table['id'], false, true ); |
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if ( is_wp_error( $existing_table ) ) { // maybe somehow load a new table here? (TablePress::$model_table->get_table_template())? |
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break; |
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} |
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|
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// Check and convert data that was transmitted as JSON. |
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if ( empty( $preview_table['data'] ) |
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|| empty( $preview_table['options'] ) |
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|| empty( $preview_table['visibility'] ) ) { |
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break; |
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} |
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$preview_table['data'] = (array) json_decode( $preview_table['data'], true ); |
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$preview_table['options'] = (array) json_decode( $preview_table['options'], true ); |
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$preview_table['visibility'] = (array) json_decode( $preview_table['visibility'], true ); |
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|
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// Check consistency of new table, and then merge with existing table. |
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$table = TablePress::$model_table->prepare_table( $existing_table, $preview_table, true ); |
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if ( is_wp_error( $table ) ) { |
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break; |
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} |
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|
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// DataTables Custom Commands can only be edited by trusted users. |
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if ( ! current_user_can( 'unfiltered_html' ) ) { |
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$table['options']['datatables_custom_commands'] = $existing_table['options']['datatables_custom_commands']; |
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} |
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|
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// If the ID has changed, and the new ID is valid, render with the new ID (important e.g. for CSS classes/HTML ID). |
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if ( $table['id'] !== $table['new_id'] && 0 === preg_match( '/[^a-zA-Z0-9_-]/', $table['new_id'] ) ) { |
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$table['id'] = $table['new_id']; |
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} |
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|
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// Sanitize all table data to remove unsafe HTML from the preview output, if the user is not allowed to work with unfiltered HTML. |
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if ( ! current_user_can( 'unfiltered_html' ) ) { |
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$table = TablePress::$model_table->sanitize( $table ); |
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} |
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|
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// At this point, the table data is valid and sanitized and can be rendered. |
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$success = true; |
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} while ( false ); // Do-while-loop through this exactly once, to be able to "break;" early. |
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|
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if ( $success ) { |
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// Create a render class instance. |
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$_render = TablePress::load_class( 'TablePress_Render', 'class-render.php', 'classes' ); |
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// Merge desired options with default render options (see TablePress_Controller_Frontend::shortcode_table()). |
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$default_render_options = $_render->get_default_render_options(); |
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/** This filter is documented in controllers/controller-frontend.php */ |
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$default_render_options = apply_filters( 'tablepress_shortcode_table_default_shortcode_atts', $default_render_options ); |
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$render_options = shortcode_atts( $default_render_options, $table['options'] ); |
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/** This filter is documented in controllers/controller-frontend.php */ |
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$render_options = apply_filters( 'tablepress_shortcode_table_shortcode_atts', $render_options ); |
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$_render->set_input( $table, $render_options ); |
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$head_html = $_render->get_preview_css(); |
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$custom_css = TablePress::$model_options->get( 'custom_css' ); |
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if ( ! empty( $custom_css ) ) { |
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$head_html .= "<style type=\"text/css\">\n{$custom_css}\n</style>\n"; |
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} |
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|
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$body_html = '<div id="tablepress-page"><p>' |
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. __( 'This is a preview of your table.', 'tablepress' ) . ' ' |
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. __( 'Because of CSS styling in your theme, the table might look different on your page!', 'tablepress' ) . ' ' |
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. __( 'The features of the DataTables JavaScript library are also not available or visible in this preview!', 'tablepress' ) . '<br />' |
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. sprintf( __( 'To insert the table into a page, post, or text widget, copy the Shortcode %s and paste it into the editor.', 'tablepress' ), '<input type="text" class="table-shortcode table-shortcode-inline" value="' . esc_attr( '[' . TablePress::$shortcode . " id={$table['id']} /]" ) . '" readonly="readonly" />' ) |
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. '</p>' . $_render->get_output() . '</div>'; |
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} else { |
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$head_html = ''; |
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$body_html = __( 'The preview could not be loaded.', 'tablepress' ); |
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} |
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|
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// Generate the response. |
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$response = array( |
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'success' => $success, |
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'head_html' => $head_html, |
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'body_html' => $body_html, |
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); |
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// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
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$output_buffer = ob_get_clean(); |
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if ( ! empty( $output_buffer ) ) { |
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$response['output_buffer'] = $output_buffer; |
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} |
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|
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// Send the response. |
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wp_send_json( $response ); |
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} |
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|
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/** |
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* Retrieve all information of a WP_Error object as a string. |
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* |
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* @since 1.4.0 |
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* |
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* @param WP_Error $wp_error A WP_Error object. |
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* @return string All error codes, messages, and data of the WP_Error. |
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*/ |
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protected function get_wp_error_string( $wp_error ) { |
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$error_strings = array(); |
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$error_codes = $wp_error->get_error_codes(); |
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// Reverse order to get latest errors first. |
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$error_codes = array_reverse( $error_codes ); |
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foreach ( $error_codes as $error_code ) { |
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$error_strings[ $error_code ] = $error_code; |
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$error_messages = $wp_error->get_error_messages( $error_code ); |
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$error_messages = implode( ', ', $error_messages ); |
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if ( ! empty( $error_messages ) ) { |
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$error_strings[ $error_code ] .= " ({$error_messages})"; |
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} |
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$error_data = $wp_error->get_error_data( $error_code ); |
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if ( ! is_null( $error_data ) ) { |
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$error_strings[ $error_code ] .= " [{$error_data}]"; |
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} |
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} |
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return implode( ";\n", $error_strings ); |
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} |
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|
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} // class TablePress_Admin_AJAX_Controller |
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|
