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_s: Only set theme options if necessary. fixes #1151 

* Remove call to add_option() during admin_init.
* Rework _s_get_theme_options() so that it merges default values into the stored settings.
* Rework _s_theme_options_validate() to only return recognized values if they are present in the $_POST request - only store what is absolutely necessary.
* Updated the docs in a few places.
* Note: _s now requires PHP5. see L161 array_intersect_key().


git-svn-id: https://wpcom-themes.svn.automattic.com/_s/@9483 d957f892-c61d-0410-b221-f235e6eecf30
This commit is contained in:
Michael Fields 2012-04-23 21:35:30 +00:00 committed by Ian Stewart
parent 2a0b4e7bf8
commit 2cd6317a4e
1 changed files with 29 additions and 37 deletions
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52
inc/theme-options/theme-options.php
View File

@ -12,19 +12,12 @@
* This function is attached to the admin_init action hook.
*
* This call to register_setting() registers a validation callback, _s_theme_options_validate(),
* which is used when the option is saved, to ensure that our option values are complete, properly
* which is used when the option is saved, to ensure that our option values are properly
* formatted, and safe.
*
* We also use this function to add our theme option if it doesn't already exist.
*
* @since _s 1.0
*/
function _s_theme_options_init() {
// If we have no options in the database, let's add them now.
if ( false === _s_get_theme_options() )
add_option( '_s_theme_options', _s_get_default_theme_options() );
register_setting(
'_s_options', // Options group, see settings_fields() call in _s_theme_options_render_page()
'_s_theme_options', // Database option, see _s_get_theme_options()
@ -148,12 +141,13 @@ function _s_sample_radio_buttons() {
}
/**
* Returns the default options for _s.
* Returns the options array for _s.
*
* @since _s 1.0
*/
function _s_get_default_theme_options() {
$default_theme_options = array(
function _s_get_theme_options() {
$saved = (array) get_option( '_s_theme_options' );
$defaults = array(
'sample_checkbox' => 'off',
'sample_text_input' => '',
'sample_select_options' => '',
@ -161,16 +155,12 @@ function _s_get_default_theme_options() {
'sample_textarea' => '',
);
return apply_filters( '_s_default_theme_options', $default_theme_options );
}
$defaults = apply_filters( '_s_default_theme_options', $defaults );
/**
* Returns the options array for _s.
*
* @since _s 1.0
*/
function _s_get_theme_options() {
return get_option( '_s_theme_options', _s_get_default_theme_options() );
$options = wp_parse_args( $saved, $defaults );
$options = array_intersect_key( $options, $defaults );
return $options;
}
/**
@ -255,7 +245,7 @@ function _s_settings_field_sample_textarea() {
}
/**
* Returns the options array for _s.
* Renders the Theme Options administration screen.
*
* @since _s 1.0
*/
@ -283,22 +273,24 @@ function _s_theme_options_render_page() {
* @see _s_theme_options_init()
* @todo set up Reset Options action
*
* @param array $input Unknown values.
* @return array Sanitized theme options ready to be stored in the database.
*
* @since _s 1.0
*/
function _s_theme_options_validate( $input ) {
$output = $defaults = _s_get_default_theme_options();
$output = array();
// The sample checkbox should either be on or off
if ( ! isset( $input['sample_checkbox'] ) )
$input['sample_checkbox'] = 'off';
$output['sample_checkbox'] = ( $input['sample_checkbox'] == 'on' ? 'on' : 'off' );
// Checkboxes will only be present if checked.
if ( isset( $input['sample_checkbox'] ) )
$output['sample_checkbox'] = 'on';
// The sample text input must be safe text with no HTML tags
if ( isset( $input['sample_text_input'] ) )
if ( isset( $input['sample_text_input'] ) && ! empty( $input['sample_text_input'] ) )
$output['sample_text_input'] = wp_filter_nohtml_kses( $input['sample_text_input'] );
// The sample select option must actually be in the array of select options
if ( array_key_exists( $input['sample_select_options'], _s_sample_select_options() ) )
if ( isset( $input['sample_select_options'] ) && array_key_exists( $input['sample_select_options'], _s_sample_select_options() ) )
$output['sample_select_options'] = $input['sample_select_options'];
// The sample radio button value must be in our array of radio button values
@ -306,8 +298,8 @@ function _s_theme_options_validate( $input ) {
$output['sample_radio_buttons'] = $input['sample_radio_buttons'];
// The sample textarea must be safe text with the allowed tags for posts
if ( isset( $input['sample_textarea'] ) )
if ( isset( $input['sample_textarea'] ) && ! empty( $input['sample_textarea'] ) )
$output['sample_textarea'] = wp_filter_post_kses( $input['sample_textarea'] );
return apply_filters( '_s_theme_options_validate', $output, $input, $defaults );
return apply_filters( '_s_theme_options_validate', $output, $input );
}