Option validation error reporting. Props jeremyclarke. see #11474
git-svn-id: http://svn.automattic.com/wordpress/trunk@13177 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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ryan
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79bdcc1446
commit
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@ -2981,12 +2981,22 @@ function get_hidden_meta_boxes($screen) {
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/**
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* Add a new section to a settings page.
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*
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* Part of the Settings API. Use this to define new settings sections for an admin page.
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* Show settings sections in your admin page callback function with do_settings_sections().
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* Add settings fields to your section with add_settings_field()
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*
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* The $callback argument should be the name of a function that echos out any
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* content you want to show at the top of the settings section before the actual
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* fields. It can output nothing if you want.
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*
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* @since 2.7.0
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*
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* @param string $id String for use in the 'id' attribute of tags.
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* @param string $title Title of the section.
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* @param string $callback Function that fills the section with the desired content. The function should echo its output.
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* @param string $page The type of settings page on which to show the section (general, reading, writing, ...).
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* @global $wp_settings_sections Storage array of all settings sections added to admin pages
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* @param string $id Slug-name to identify the section. Used in the 'id' attribute of tags.
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* @param string $title Formatted title of the section. Shown as the heading for the section.
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* @param string $callback Function that echo's out content for the section heading.
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* @param string $page The slug-name of the settings page on which to show the section (general, reading, writing, ...).
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*/
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function add_settings_section($id, $title, $callback, $page) {
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global $wp_settings_sections;
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@ -3002,15 +3012,25 @@ function add_settings_section($id, $title, $callback, $page) {
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}
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/**
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* Add a new field to a settings page.
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* Add a new field to a section of a settings page
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*
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* Part of the Settings API. Use this to define a settings field that will show
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* as part of a settings section inside a settings page. The fields are shown using
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* do_settings_fields() in do_settings-sections()
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*
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* The $callback argument should be the name of a function that echoes out the
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* html input tags for this setting field. Use get_option() to retrive existing
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* values to show.
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*
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* @since 2.7.0
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*
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* @param string $id String for use in the 'id' attribute of tags.
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* @param string $title Title of the field.
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* @param string $callback Function that fills the field with the desired content. The function should echo its output.
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* @param string $page The type of settings page on which to show the field (general, reading, writing, ...).
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* @param string $section The section of the settingss page in which to show the box (default, ...).
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* @global $wp_settings_fields Storage array of settings fields and info about their pages/sections
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*
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* @param string $id Slug-name to identify the field. Used in the 'id' attribute of tags.
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* @param string $title Formatted title of the field. Shown as the label for the field during output.
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* @param string $callback Function that fills the field with the desired form inputs. The function should echo its output.
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* @param string $page The slug-name of the settings page on which to show the section (general, reading, writing, ...).
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* @param string $section The slug-name of the section of the settingss page in which to show the box (default, ...).
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* @param array $args Additional arguments
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*/
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function add_settings_field($id, $title, $callback, $page, $section = 'default', $args = array()) {
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@ -3027,11 +3047,17 @@ function add_settings_field($id, $title, $callback, $page, $section = 'default',
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}
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/**
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* {@internal Missing Short Description}}
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* Prints out all settings sections added to a particular settings page
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*
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* Part of the Settings API. Use this in a settings page callback function
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* to output all the sections and fields that were added to that $page with
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* add_settings_section() and add_settings_field()
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*
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* @global $wp_settings_sections Storage array of all settings sections added to admin pages
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* @global $wp_settings_fields Storage array of settings fields and info about their pages/sections
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* @since unknown
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*
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* @param unknown_type $page
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* @param string $page The slug name of the page whos settings sections you want to output
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*/
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function do_settings_sections($page) {
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global $wp_settings_sections, $wp_settings_fields;
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@ -3051,12 +3077,18 @@ function do_settings_sections($page) {
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}
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/**
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* {@internal Missing Short Description}}
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* Print out the settings fields for a particular settings section
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*
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* Part of the Settings API. Use this in a settings page to output
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* a specific section. Should normally be called by do_settings_sections()
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* rather than directly.
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*
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* @global $wp_settings_fields Storage array of settings fields and their pages/sections
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*
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* @since unknown
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*
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* @param unknown_type $page
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* @param unknown_type $section
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* @param string $page Slug title of the admin page who's settings fields you want to show.
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* @param section $section Slug title of the settings section who's fields you want to show.
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*/
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function do_settings_fields($page, $section) {
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global $wp_settings_fields;
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@ -3077,6 +3109,131 @@ function do_settings_fields($page, $section) {
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}
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}
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/**
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* Register a settings error to be displayed to the user
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*
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* Part of the Settings API. Use this to show messages to users about settings validation
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* problems, missing settings or anything else.
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*
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* Settings errors should be added inside the $sanitize_callback function defined in
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* register_setting() for a given setting to give feedback about the submission.
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*
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* By default messages will show immediately after the submission that generated the error.
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* Additional calls to settings_errors() can be used to show errors even when the settings
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* page is first accessed.
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*
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* @global array $wp_settings_errors Storage array of errors registered during this pageload
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*
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* @param string $setting Slug title of the setting to which this error applies
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* @param string $id Slug-name to identify the error. Used as part of 'id' attribute in HTML output.
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* @param string $message The formatted message text to display to the user (will be shown inside styled <div> and <p>)
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* @param string $type The type of message it is, controls HTML class. Use 'error' or 'updated'.
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*/
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function add_settings_error( $setting, $id, $message, $type = 'error' ) {
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global $wp_settings_errors;
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if ( !isset($wp_settings_errors) )
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$wp_settings_errors = array();
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$new_error = array(
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'setting' => $setting,
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'title' => $title, // @todo $title not defined. Use $id instead?
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'message' => $message,
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'type' => $type
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);
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$wp_settings_errors[] = $new_error;
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}
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/**
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* Fetch settings errors registered by add_settings_error()
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*
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* Checks the $wp_settings_errors array for any errors declared during the current
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* pageload and returns them.
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*
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* If changes were just submitted ($_GET['updated']) and settings errors were saved
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* to the 'settings_errors' transient then those errors will be returned instead. This
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* is used to pass errors back across pageloads.
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*
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* Use the $sanitize argument to manually re-sanitize the option before returning errors.
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* This is useful if you have errors or notices you want to show even when the user
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* hasn't submitted data (i.e. when they first load an options page, or in admin_notices action hook)
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*
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* @global array $wp_settings_errors Storage array of errors registered during this pageload
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*
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* @param string $setting Optional slug title of a specific setting who's errors you want.
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* @param boolean $sanitize Whether to re-sanitize the setting value before returning errors.
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* @return array Array of settings errors
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*/
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function get_settings_errors( $setting = '', $sanitize = FALSE ) {
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global $wp_settings_errors;
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// If $sanitize is true, manually re-run the sanitizisation for this option
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// This allows the $sanitize_callback from register_setting() to run, adding
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// any settings errors you want to show by default.
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if ( $sanitize )
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sanitize_option( $setting, get_option($setting));
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// If settings were passed back from options.php then use them
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// Ignore transients if $sanitize is true, we dont' want the old values anyway
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if ( isset($_GET['updated']) && $_GET['updated'] && get_transient('settings_errors') ) {
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$settings_errors = get_transient('settings_errors');
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delete_transient('settings_errors');
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// Otherwise check global in case validation has been run on this pageload
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} elseif ( count( $wp_settings_errors ) ) {
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$settings_errors = $wp_settings_errors;
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} else {
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return;
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}
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// Filter the results to those of a specific setting if one was set
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if ( $setting ) {
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foreach ( (array) $settings_errors as $key => $details )
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if ( $setting != $details['setting'] )
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unset( $settings_errors[$key] );
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}
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return $settings_errors;
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}
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/**
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* Display settings errors registered by add_settings_error()
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*
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* Part of the Settings API. Outputs a <div> for each error retrieved by get_settings_errors().
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*
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* This is called automatically after a settings page based on the Settings API is submitted.
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* Errors should be added during the validation callback function for a setting defined in register_setting()
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*
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* The $sanitize option is passed into get_settings_errors() and will re-run the setting sanitization
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* on its current value.
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*
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* The $hide_on_update option will cause errors to only show when the settings page is first loaded.
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* if the user has already saved new values it will be hidden to avoid repeating messages already
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* shown in the default error reporting after submission. This is useful to show general errors like missing
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* settings when the user arrives at the settings page.
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*
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* @param string $setting Optional slug title of a specific setting who's errors you want.
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* @param boolean $sanitize Whether to re-sanitize the setting value before returning errors.
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* @param boolean $hide_on_update If set to true errors will not be shown if the settings page has already been submitted.
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* @return <type>
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*/
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function settings_errors ( $setting = '', $sanitize = FALSE, $hide_on_update = FALSE ) {
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if ($hide_on_update AND $_GET['updated']) return;
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$settings_errors = get_settings_errors( $setting, $sanitize );
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if ( !is_array($settings_errors) ) return;
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$output = '';
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foreach ( $settings_errors as $key => $details ) {
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$css_id = 'setting-error-' . $details['title'];
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$css_class = $details['type'] . ' fade settings-error';
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$output .= "<div id='$css_id' class='$css_class'> \n";
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$output .= "<p><strong>{$details['message']}</strong></p>";
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$output .= "</div> \n";
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}
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echo $output;
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}
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/**
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* {@internal Missing Short Description}}
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*
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@ -10,8 +10,7 @@
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*/
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wp_reset_vars(array('action', 'standalone', 'option_group_id'));
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?>
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<?php if (isset($_GET['updated'])) : ?>
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<div id="message" class="updated"><p><strong><?php _e('Settings saved.') ?></strong></p></div>
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<?php endif; ?>
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settings_errors();
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?>
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@ -2,11 +2,14 @@
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/**
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* Options Management Administration Panel.
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*
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* Just allows for displaying of options.
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* If accessed directly in a browser this page shows a list of all saved options
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* along with editable fields for their values. Serialized data is not supported
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* and there is no way to remove options via this page. It is not linked to from
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* anywhere else in the admin.
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*
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* This isn't referenced or linked to, but will show all of the options and
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* allow editing. The issue is that serialized data is not supported to be
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* modified. Options can not be removed.
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* This file is also the target of the forms in core and custom options pages
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* that use the Settings API. In this case it saves the new option values
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* and returns the user to their page of origin.
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*
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* @package WordPress
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* @subpackage Administration
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@ -76,6 +79,9 @@ if ( is_multisite() && is_super_admin() && isset($_GET[ 'adminhash' ]) && $_GET[
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switch($action) {
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/**
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* If $_GET['action'] == 'update' we are saving settings sent from a settings page
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*/
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case 'update':
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if ( isset($_POST[ 'option_page' ]) ) {
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$option_page = $_POST[ 'option_page' ];
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@ -123,6 +129,17 @@ case 'update':
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}
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}
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/**
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* Handle settings errors and return to options page
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*/
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// If no settings errors were registered add a general 'updated' message.
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if ( !count( get_settings_errors() ) )
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add_settings_error('general', 'settings_updated', __('Settings saved.'), 'updated');
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set_transient('settings_errors', get_settings_errors(), 30);
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/**
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* Redirect back to the settings page that was submitted
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*/
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$goback = add_query_arg( 'updated', 'true', wp_get_referer() );
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wp_redirect( $goback );
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break;
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@ -2380,7 +2380,9 @@ function sanitize_option($option, $value) {
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switch ($option) {
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case 'admin_email':
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$value = sanitize_email($value);
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if ( !$value = sanitize_email($value) && function_exists('add_settings_error') )
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add_settings_error('admin_email', 'invalid_admin_email', __('The E-Mail Address submitted was not in the right format. Please enter a valid Email Address'));
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break;
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case 'thumbnail_size_w':
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