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custom_metadata.php
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<?php
/*
Plugin Name: Custom Metadata Manager
Plugin URI: http://wordpress.org/extend/plugins/custom-metadata/
Description: An easy way to add custom fields to your object types (post, pages, custom post types, users)
Author: Automattic, Stresslimit & Contributors
Version: 0.8-dev
Author URI: https://github.com/Automattic/custom-metadata/
Copyright 2010-2013 The Contributors
GNU General Public License, Free Software Foundation <http://creativecommons.org/licenses/GPL/2.0/>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* set this to true in your wp-config.php file to enable debug/test mode
*/
if ( ! defined( 'CUSTOM_METADATA_MANAGER_DEBUG' ) )
define( 'CUSTOM_METADATA_MANAGER_DEBUG', false );
if ( CUSTOM_METADATA_MANAGER_DEBUG )
include_once 'custom_metadata_examples.php';
class custom_metadata_manager {
var $errors = array();
var $metadata = array();
var $_non_post_types = array( 'user', 'comment' );
// Object types that come "built-in" with WordPress
var $_builtin_object_types = array( 'post', 'page', 'user', 'comment' );
// Column filter names
var $_column_types = array( 'posts', 'pages', 'users', 'comments' );
// field types
var $_field_types = array( 'text', 'textarea', 'password', 'number', 'email', 'telephone', 'checkbox', 'radio', 'select', 'multi_select', 'upload', 'wysiwyg', 'datepicker', 'datetimepicker', 'timepicker', 'taxonomy_select', 'taxonomy_radio', 'taxonomy_checkbox', 'link', 'sortable_select' );
// field types that are cloneable
var $_cloneable_field_types = array( 'text', 'textarea', 'upload', 'password', 'number', 'email', 'tel' );
// field types that support a default value
var $_field_types_that_support_default_value = array( 'text', 'textarea', 'password', 'number', 'email', 'telephone', 'upload', 'wysiwyg', 'datepicker', 'datetimepicker', 'timepicker', 'link' );
// field types that support the placeholder attribute
var $_field_types_that_support_placeholder = array( 'text', 'textarea', 'password', 'number', 'email', 'tel', 'upload', 'datepicker', 'datetimepicker', 'timepicker', 'link' );
// field types that are read only by default
var $_field_types_that_are_read_only = array( 'upload', 'link', 'datepicker', 'datetimepicker', 'timepicker' );
// field types that support being part of a multifield group
// @todo: workarounds needed for other field types
var $_field_types_that_support_multifield = array( 'text', 'textarea', 'password', 'number', 'email', 'tel', 'select', 'checkbox', 'datepicker', 'datetimepicker', 'timepicker', 'link', 'upload' );
// taxonomy types
var $_taxonomy_fields = array( 'taxonomy_select', 'taxonomy_radio', 'taxonomy_checkbox', 'taxonomy_multi_select' );
// filed types that are saved as multiples but not cloneable
var $_multiple_not_cloneable = array( 'taxonomy_checkbox' );
// fields that always save as an array
var $_always_multiple_fields = array( 'taxonomy_checkbox', 'multi_select', 'taxonomy_multi_select' );
// Object types whose columns are generated through apply_filters instead of do_action
var $_column_filter_object_types = array( 'user' );
// Whitelisted pages that get stylesheets and scripts
var $_pages_whitelist = array( 'edit.php', 'post.php', 'post-new.php', 'users.php', 'profile.php', 'user-edit.php', 'edit-comments.php', 'comment.php' );
// the default args used for the wp_editor function
var $default_editor_args = array();
// singleton instance
private static $instance;
public static function instance() {
if ( isset( self::$instance ) )
return self::$instance;
self::$instance = new custom_metadata_manager;
self::$instance->run_initial_hooks();
return self::$instance;
}
// do nothing on construct
function __construct() {}
function run_initial_hooks() {
add_action( 'admin_init', array( $this, 'admin_init' ), 1000, 0 );
}
function admin_init() {
global $pagenow;
// filter our vars
$this->_non_post_types = apply_filters( 'custom_metadata_manager_non_post_types', $this->_non_post_types );
$this->_builtin_object_types = apply_filters( 'custom_metadata_manager_builtin_object_types', $this->_builtin_object_types );
$this->_column_types = apply_filters( 'custom_metadata_manager_column_types', $this->_column_types );
$this->_field_types = apply_filters( 'custom_metadata_manager_field_types', $this->_field_types );
$this->_cloneable_field_types = apply_filters( 'custom_metadata_manager_cloneable_field_types', $this->_cloneable_field_types );
$this->_field_types_that_support_default_value = apply_filters( 'custom_metadata_manager_field_types_that_support_default_value', $this->_field_types_that_support_default_value );
$this->_field_types_that_support_placeholder = apply_filters( 'custom_metadata_manager_field_types_that_support_placeholder', $this->_field_types_that_support_placeholder );
$this->_field_types_that_are_read_only = apply_filters( 'custom_metadata_manager_field_types_that_are_read_only', $this->_field_types_that_are_read_only );
$this->_field_types_that_support_multifield = apply_filters( 'custom_metadata_manager_field_types_that_support_multifield', $this->_field_types_that_support_multifield );
$this->_taxonomy_fields = apply_filters( 'custom_metadata_manager_cloneable_field_types', $this->_taxonomy_fields );
$this->_column_filter_object_types = apply_filters( 'custom_metadata_manager_column_filter_object_types', $this->_column_filter_object_types );
$this->_pages_whitelist = apply_filters( 'custom_metadata_manager_pages_whitelist', $this->_pages_whitelist );
$this->default_editor_args = apply_filters( 'custom_metadata_manager_default_editor_args', $this->default_editor_args );
define( 'CUSTOM_METADATA_MANAGER_SELECT2_VERSION', '3.2' ); // version for included select2.js
define( 'CUSTOM_METADATA_MANAGER_TIMEPICKER_VERSION', '1.2' ); // version for included timepicker
define( 'CUSTOM_METADATA_MANAGER_VERSION', '0.8-dev' );
define( 'CUSTOM_METADATA_MANAGER_URL' , apply_filters( 'custom_metadata_manager_url', trailingslashit( plugins_url( '', __FILE__ ) ) ) );
$this->init_object_types();
// Hook into load to initialize custom columns
if ( in_array( $pagenow, $this->_pages_whitelist ) ) {
add_action( 'load-' . $pagenow, array( $this, 'init_metadata' ) );
}
// Hook into admin_notices to show errors
if ( current_user_can( 'manage_options' ) )
add_action( 'admin_notices', array( $this, '_display_registration_errors' ) );
do_action( 'custom_metadata_manager_init' );
do_action( 'custom_metadata_manager_admin_init' );
}
function init_object_types() {
foreach ( array_merge( get_post_types(), $this->_builtin_object_types ) as $object_type )
$this->metadata[$object_type] = array();
}
function init_metadata() {
$object_type = $this->_get_object_type_context();
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_styles' ) );
$this->init_columns();
// Handle actions related to users
if ( $object_type == 'user' ) {
// Editing another user's profile
add_action( 'edit_user_profile', array( $this, 'add_user_metadata_groups' ) );
add_action( 'edit_user_profile_update', array( $this, 'save_user_metadata' ) );
// Allow user-editable fields on "Your Profile"
add_action( 'show_user_profile', array( $this, 'add_user_metadata_groups' ) );
add_action( 'personal_options_update', array( $this, 'save_user_metadata' ) );
} else {
// Hook in to metaboxes
add_action( 'add_meta_boxes', array( $this, "add_post_metadata_groups" ) );
// Hook in to save
add_action( 'save_post', array( $this, 'save_post_metadata' ) );
add_action( 'edit_comment', array( $this, 'save_comment_metadata' ) );
}
do_action( 'custom_metadata_manager_init_metadata', $object_type );
add_action( 'admin_footer', array( $this, '_display_wp_link_dialog' ) );
}
function init_columns() {
$object_type = $this->_get_object_type_context();
// This is not really that clean, but it works. Damn inconsistencies!
if ( post_type_exists( $object_type ) ) {
$column_header_name = sprintf( '%s_posts', $object_type );
$column_content_name = ( 'page' != $object_type ) ? 'posts' : 'pages';
} elseif ( $object_type == 'comment' ) {
$column_header_name = 'edit-comments';
$column_content_name = 'comments';
} else {
// users
$column_header_name = $column_content_name = $object_type . 's';
}
// Hook into Column Headers
add_filter( "manage_{$column_header_name}_columns", array( $this, 'add_metadata_column_headers' ) );
// User and Posts have different functions
$custom_column_content_function = array( $this, "add_{$object_type}_metadata_column_content" );
if ( ! is_callable( $custom_column_content_function ) )
$custom_column_content_function = array( $this, 'add_metadata_column_content' );
// Hook into Column Content. Users get filtered, others get actioned.
if ( ! in_array( $object_type, $this->_column_filter_object_types ) )
add_action( "manage_{$column_content_name}_custom_column", $custom_column_content_function, 10, 3 );
else
add_filter( "manage_{$column_content_name}_custom_column", $custom_column_content_function, 10, 3 );
}
function enqueue_scripts() {
wp_enqueue_media();
wp_enqueue_script( 'wplink' );
wp_enqueue_script( 'wpdialogs-popup' );
wp_enqueue_style( 'wp-jquery-ui-dialog' );
wp_enqueue_script( 'select2', apply_filters( 'custom_metadata_manager_select2_js', CUSTOM_METADATA_MANAGER_URL .'js/select2.min.js' ), array( 'jquery' ), CUSTOM_METADATA_MANAGER_SELECT2_VERSION, true );
wp_enqueue_script( 'timepicker', apply_filters( 'custom_metadata_manager_select2_js', CUSTOM_METADATA_MANAGER_URL .'js/jquery-ui-timepicker.min.js' ), array( 'jquery', 'jquery-ui-datepicker' ), CUSTOM_METADATA_MANAGER_TIMEPICKER_VERSION, true );
wp_enqueue_script( 'custom-metadata-manager-js', apply_filters( 'custom_metadata_manager_default_js', CUSTOM_METADATA_MANAGER_URL .'js/custom-metadata-manager.js' ), array( 'jquery', 'jquery-ui-datepicker', 'select2' ), CUSTOM_METADATA_MANAGER_VERSION, true );
}
function enqueue_styles() {
wp_enqueue_style( 'wp-jquery-ui-dialog' );
wp_enqueue_style( 'editor-buttons' );
wp_enqueue_style( 'custom-metadata-manager-css', apply_filters( 'custom_metadata_manager_default_css', CUSTOM_METADATA_MANAGER_URL .'css/custom-metadata-manager.css' ), array(), CUSTOM_METADATA_MANAGER_VERSION );
wp_enqueue_style( 'jquery-ui-datepicker', apply_filters( 'custom_metadata_manager_jquery_ui_css', CUSTOM_METADATA_MANAGER_URL .'css/jquery-ui-smoothness.css' ), array(), CUSTOM_METADATA_MANAGER_VERSION );
wp_enqueue_style( 'select2', apply_filters( 'custom_metadata_manager_select2_css', CUSTOM_METADATA_MANAGER_URL .'css/select2.css' ), array(), CUSTOM_METADATA_MANAGER_SELECT2_VERSION );
}
function add_metadata_column_headers( $columns ) {
$object_type = $this->_get_object_type_context();
if ( $object_type ) {
$fields = $this->get_fields_in_object_type( $object_type );
foreach ( $fields as $field_slug => $field ) {
if ( $this->is_field_addable_to_columns( $field_slug, $field ) ) {
$columns[$field_slug] = is_string( $field->display_column ) ? $field->display_column : $field->label;
}
}
}
return $columns;
}
function add_user_metadata_column_content( $param, $name, $object_id ) {
return $this->add_metadata_column_content( $name, $object_id );
}
function add_metadata_column_content( $name, $object_id ) {
$object_type = $this->_get_object_type_context();
$field_slug = $name;
$column_content = '';
if ( $this->is_registered_object_type( $object_type ) && $this->is_registered_field( $field_slug, null, $object_type ) ) {
$field = $this->get_field( $field_slug, null, $object_type );
$column_content = $this->_metadata_column_content( $field_slug, $field, $object_type, $object_id );
}
if ( $column_content && ! in_array( $object_type, $this->_column_filter_object_types ) )
echo $column_content;
else
return $column_content;
}
function add_metadata_field( $field_slug, $object_types = array( 'post' ), $args = array() ) {
$defaults = array(
'group' => '', // To which meta_box the field should be added
'multifield' => false, // which multifield does this field belong to, if any
'field_type' => 'text', // The type of field; possibly values: text, checkbox, radio, select, image
'label' => $field_slug, // Label for the field
'slug' => $field_slug, // Slug for the field
'description' => '', // Description of the field, displayed below the input
'values' => array(), // values for select, checkbox, radio buttons
'default_value' => '', // default value
'placeholder' => '',
'display_callback' => '', // function to custom render the input
'sanitize_callback' => '',
'display_column' => false, // Add the field to the columns when viewing all posts
'display_column_callback' => '',
'add_to_quick_edit' => false, // (post only) Add the field to Quick edit
'required_cap' => false, // the cap required to view and edit the field
'multiple' => false, // can the field be duplicated with a click of a button
'readonly' => false, // makes the field be readonly
'select2' => false, // applies select2.js (work on select and multi select field types)
'min' => false, // a minimum value (for number field only)
'max' => false, // a maximum value (for number field only)
'upload_modal_title' => __( 'Choose a file', 'custom-metadata' ), // upload modal title (for upload field only)
'upload_modal_button_text' => __( 'Select this file', 'custom-metadata' ), // upload modal button text (for upload field only)
'upload_clear_button_text' => __( 'Clear', 'custom-metadata' ), // upload clear field text (for upload field only)
'link_modal_button_text' => __( 'Select', 'custom-metadata' ), // link field button text
);
// upload field is readonly by default (can be set explicitly to false though)
if ( ! empty( $args['field_type'] ) && in_array( $args['field_type'], $this->_field_types_that_are_read_only ) )
$defaults['readonly'] = true;
// `chosen` arg is the same as `select2` arg
if ( isset( $args['chosen'] ) ) {
$args['select2'] = $args['chosen'];
unset( $args['chosen'] );
}
// Merge defaults with args
$field = wp_parse_args( $args, $defaults );
$field = (object) $field;
// Sanitize slug
$field_slug = sanitize_key( $field_slug );
$group_slug = sanitize_key( $field->group );
// Check to see if the user should see this field
if ( ! empty( $field->required_cap ) && ! current_user_can( $field->required_cap ) )
return;
$field = apply_filters( 'custom_metadata_manager_add_metadata_field', $field, $field_slug, $group_slug, $object_types );
if ( ! $this->_validate_metadata_field( $field_slug, $field, $group_slug, $object_types ) )
return;
// $object_types = (array) $object_type;
// if ( $field->multifield && $this->_multifield_exists_for_group_object( $field->multifield, $group_slug, array_shift( $object_types ) ) ) {
// $this->add_field_to_multifield( $field_slug, $field, $group_slug, $object_types );
// } else {
// add to group
$this->add_field_to_group( $field_slug, $field, $group_slug, $object_types );
// }
}
function add_multifield( $slug, $object_types = array( 'post' ), $args = array() ) {
$defaults = array(
'group' => '', // To which meta_box the multifield should be added
'label' => $slug, // Label for the multifield
'description' => '', // Description of the multifield, displayed below all the fields
'required_cap' => false, // the cap required to view and edit the multifield
);
// Merge defaults with args
$multifield = wp_parse_args( $args, $defaults );
$multifield['multifield'] = true; // force it
$multifield = (object) $multifield;
// Sanitize slug
$slug = sanitize_key( $slug );
$group_slug = sanitize_key( $multifield->group );
// Check to see if the user should see this field
if ( ! empty( $multifield->required_cap ) && ! current_user_can( $multifield->required_cap ) )
return;
$multifield = apply_filters( 'custom_metadata_manager_add_multifield', $multifield, $slug, $group_slug, $object_types );
if ( ! $this->_validate_metadata_field( $slug, $multifield, $group_slug, $object_types ) )
return;
// Add to group
$this->add_multifield_to_group( $slug, $multifield, $group_slug, $object_types );
}
function add_metadata_group( $group_slug, $object_types, $args = array() ) {
$defaults = array(
'label' => $group_slug, // Label for the group
'description' => '', // Description of the group
'context' => 'normal', // (post only)
'priority' => 'default', // (post only)
'autosave' => false, // (post only) Should the group be saved in autosave?
'required_cap' => false, // the cap required to view and edit the group
);
// Merge defaults with args
$group = wp_parse_args( $args, $defaults );
$group = (object) $group;
// Sanitize slug
$group_slug = sanitize_key( $group_slug );
$group = apply_filters( 'custom_metadata_manager_add_metadata_group', $group, $group_slug, $object_types );
// Check to see if the user has caps to view/edit this group
if ( ! empty( $group->required_cap ) && ! current_user_can( $group->required_cap ) )
return;
if ( !$this->_validate_metadata_group( $group_slug, $group, $object_types ) )
return;
$this->add_group_to_object_type( $group_slug, $group, $object_types );
}
function add_field_to_group( $field_slug, $field, $group_slug, $object_types ) {
$object_types = (array) $object_types;
foreach ( $object_types as $object_type ) {
if ( ! $group_slug ) {
$group_slug = sprintf( 'single-group-%1$s-%2$s', $object_type, $field_slug );
}
// If group doesn't exist, create group
if ( ! $this->is_registered_group( $group_slug, $object_type ) ) {
$this->add_metadata_group( $group_slug, $object_type, array( 'label' => ( ! empty( $field->label ) ) ? $field->label : $field_slug ) );
$field->group = $group_slug;
}
$this->_push_field( $field_slug, $field, $group_slug, $object_type );
}
}
function add_multifield_to_group( $slug, $multifield, $group_slug, $object_types ) {
$object_types = (array) $object_types;
foreach ( $object_types as $object_type ) {
if ( ! $group_slug ) {
$group_slug = sprintf( 'single-group-%1$s-%2$s', $object_type, $slug );
}
// If group doesn't exist, create group
if ( ! $this->is_registered_group( $group_slug, $object_type ) ) {
$this->add_metadata_group( $group_slug, $object_type, array( 'label' => ( ! empty( $multifield->label ) ) ? $multifield->label : $slug ) );
$multifield->group = $group_slug;
}
$this->_push_multifield( $slug, $multifield, $group_slug, $object_type );
}
}
function add_group_to_object_type( $group_slug, $group, $object_types ) {
$object_types = (array) $object_types;
foreach ( $object_types as $object_type ) {
if ( ( $this->is_registered_object_type( $object_type ) && ! $this->is_group_in_object_type( $group_slug, $object_type ) ) ) {
$group->fields = array();
$this->_push_group( $group_slug, $group, $object_type );
}
}
}
function _validate_metadata_group( $group_slug, $group, $object_type ) {
$valid = true;
// TODO: only validate when DEBUG is on?
/*
if( ! $group_slug ) {
} elseif ( $this->is_registered_group( $group_slug, $object_type ) ) {
// TODO: check that it hasn't been registered already
} elseif ( $this->is_restricted_group( $group_slug, $object_type ) ) {
// TODO: check that it isn't restricted
}
*/
return $valid;
}
function _validate_metadata_field( $field_slug, $field, $group_slug, $object_types ) {
// TODO: only validate when DEBUG is on?
$valid = true;
/*
if( !$field_slug ) {
// Check that
$this->_add_registration_error( $field_slug, __( 'You entered an empty slug name for this field!', 'custom-metadata-manager' ) );
$valid = false;
} else if( $this->is_registered_field( $field_slug, $group_slug, $object_type ) ) {
// does field name already exists
$this->_add_registration_error( $field_slug, __( 'This field already exists. Check to see that you\'re not registering the field twice, or use a different slug.', 'custom-metadata-manager' ) );
$valid = false;
} else if( $this->is_restricted_field( $field_slug, $object_type ) ) {
// is field restricted
$this->_add_registration_error( $field_slug, __( 'This field is restricted. Please use a different slug.', 'custom-metadata-manager' ) );
$valid = false;
}
// if display_callback not defined
// show admin_notices error
// show as text field (?)
*/
// TODO: valid object_type?
return $valid;
}
function _add_registration_error( $field_slug, $error_message ) {
$this->errors[] = sprintf( __( '<strong>%1$s:</strong> %2$s', 'custom-metadata-manager' ), $field_slug, $error_message );
}
function add_post_metadata_groups() {
global $post, $comment;
$object_id = 0;
if ( isset( $post ) ) {
$object_id = $post->ID;
} elseif ( isset( $comment ) ) {
$object_id = $comment->comment_ID;
}
$object_type = $this->_get_object_type_context();
$groups = $this->get_groups_in_object_type( $object_type );
if ( $object_id && !empty( $groups ) ) {
foreach ( $groups as $group_slug => $group ) {
$this->add_post_metadata_group( $group_slug, $group, $object_type, $object_id );
}
}
}
function add_post_metadata_group( $group_slug, $group, $object_type, $object_id ) {
$fields = $this->get_fields_in_group( $group_slug, $object_type );
if ( ! empty( $fields ) && $this->is_thing_added_to_object( $group_slug, $group, $object_type, $object_id ) ) {
add_meta_box( $group_slug, $group->label, array( $this, '_display_post_metadata_box' ), $object_type, $group->context, $group->priority, array( 'group' => $group, 'fields' => $fields ) );
}
}
function add_user_metadata_groups() {
global $user_id;
if ( !$user_id ) return;
$object_type = 'user';
$groups = $this->get_groups_in_object_type( $object_type );
if ( !empty( $groups ) ) {
foreach ( $groups as $group_slug => $group ) {
$this->add_user_metadata_group( $group_slug, $group, $object_type, $user_id );
}
}
}
function add_user_metadata_group( $group_slug, $group, $object_type, $user_id ) {
$fields = $this->get_fields_in_group( $group_slug, $object_type );
if ( ! empty( $fields ) && $this->is_thing_added_to_object( $group_slug, $group, $object_type, $user_id ) )
$this->_display_user_metadata_box( $group_slug, $group, $object_type, $fields );
}
function _display_user_metadata_box( $group_slug, $group, $object_type, $fields ) {
global $user_id;
?>
<h3><?php echo $group->label; ?></h3>
<table class="form-table user-metadata-group">
<?php foreach ( $fields as $field_slug => $field ) : ?>
<?php if ( $this->is_thing_added_to_object( $field_slug, $field, $object_type, $user_id ) ) : ?>
<tr valign="top">
<td scope="row">
<?php $this->_display_metadata_field( $field_slug, $field, $object_type, $user_id ); ?>
</td>
</tr>
<?php endif; ?>
<?php endforeach; ?>
</table>
<?php
$this->_display_group_nonce( $group_slug, $object_type );
}
function _display_post_metadata_box( $object, $meta_box ) {
$group_slug = $meta_box['id'];
$group = $meta_box['args']['group'];
$fields = $meta_box['args']['fields'];
$object_type = $this->_get_object_type_context();
// I really don't like using variable variables, but this is the path of least resistence.
if ( isset( $object->{$object_type . '_ID'} ) ) {
$object_id = $object->{$object_type . '_ID'};
} elseif ( isset( $object->ID ) ) {
$object_id = $object->ID;
} else {
_e( 'Uh oh, something went wrong!', 'custom-metadata-manager' );
return;
}
$this->_display_group_description( $group );
foreach ( $fields as $field_slug => $field ) {
if ( $this->is_thing_added_to_object( $field_slug, $field, $object_type, $object_id ) ) {
if ( $this->_is_multifield( $field_slug ) ) {
$this->_display_metadata_multifield( $field_slug, $field, $object_type, $object_id );
} elseif ( empty( $field->multifield ) ) {
$this->_display_metadata_field( $field_slug, $field, $object_type, $object_id );
}
}
}
// Each group gets its own nonce
$this->_display_group_nonce( $group_slug, $object_type );
}
function _display_group_description( $group ) {
if ( ! empty( $group->description ) )
printf( '<div class="custom-metadata-group-description description">%s</div>', $group->description );
}
function _display_group_nonce( $group_slug, $object_type ) {
$nonce_key = $this->build_nonce_key( $group_slug, $object_type );
wp_nonce_field( 'save-metadata', $nonce_key, false );
}
function verify_group_nonce( $group_slug, $object_type ) {
$nonce_key = $this->build_nonce_key( $group_slug, $object_type );
if ( isset( $_POST[$nonce_key] ) )
return wp_verify_nonce( $_POST[$nonce_key], 'save-metadata' );
else
return false;
}
function build_nonce_key( $group_slug, $object_type ) {
return sprintf( 'metadata-%1$s-%2$s', $object_type, $group_slug );
}
function save_user_metadata( $user_id ) {
$object_type = 'user';
$groups = $this->get_groups_in_object_type( $object_type );
foreach ( $groups as $group_slug => $group ) {
$this->save_metadata_group( $group_slug, $group, $object_type, $user_id );
}
}
function save_post_metadata( $post_id ) {
$post_type = $this->_get_object_type_context();
$groups = $this->get_groups_in_object_type( $post_type );
foreach ( $groups as $group_slug => $group ) {
// TODO: Allow hook into autosave
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE && !$group->autosave )
return $post_id;
$this->save_metadata_group( $group_slug, $group, $post_type, $post_id );
}
}
function save_comment_metadata( $comment_id ) {
$object_type = 'comment';
$groups = $this->get_groups_in_object_type( $object_type );
foreach ( $groups as $group_slug => $group ) {
$this->save_metadata_group( $group_slug, $group, $object_type, $comment_id );
}
}
function save_metadata_group( $group_slug, $group, $object_type, $object_id ) {
if ( !$this->verify_group_nonce( $group_slug, $object_type ) ) {
return $object_id;
}
$fields = $this->get_fields_in_group( $group_slug, $object_type );
foreach ( $fields as $field_slug => $field ) {
if ( true === $field->multifield ) {
$this->save_metadata_multifield( $field_slug, $field, $object_type, $object_id );
} elseif ( ! $field->multifield ) {
$this->save_metadata_field( $field_slug, $field, $object_type, $object_id );
}
}
}
function save_metadata_multifield( $slug, $multifield, $object_type, $object_id ) {
if ( isset( $_POST[$slug] ) ) {
$multifield_value = array();
$groupings = $_POST[$slug];
$fields = $this->get_fields_in_multifield( $multifield->group, $slug, $object_type );
foreach ( $groupings as $grouping ) {
$grouping_values = array();
foreach ( $fields as $field_slug => $field ) {
if ( ! empty( $grouping[$field_slug] ) ) {
$grouping_values[$field_slug] = $this->_sanitize_field_value( $field_slug, $field, $object_type, $object_id, $grouping[$field_slug] );
if ( $field->field_type == 'upload' ) {
$grouping_values[$field_slug . '_attachment_id'] = $this->_sanitize_field_value( $field_slug . '_attachment_id', $field, $object_type, $object_id, $grouping[$field_slug . '_attachment_id'] );
}
} else {
$grouping_values[$field_slug] = '';
if ( $field->field_type == 'upload' ) {
$grouping_values[$field_slug . '_attachment_id'] = '';
}
}
}
$multifield_value[] = $grouping_values;
}
$slug = sanitize_key( $slug );
if ( ! in_array( $object_type, $this->_non_post_types ) )
$object_type = 'post';
update_metadata( $object_type, $object_id, $slug, $multifield_value );
} else {
$slug = sanitize_key( $slug );
if ( ! in_array( $object_type, $this->_non_post_types ) )
$object_type = 'post';
delete_metadata( $object_type, $object_id, $slug );
}
}
function save_metadata_field( $field_slug, $field, $object_type, $object_id ) {
if ( isset( $_POST[$field_slug] ) ) {
$value = $this->_sanitize_field_value( $field_slug, $field, $object_type, $object_id, $_POST[$field_slug] );
$this->_save_field_value( $field_slug, $field, $object_type, $object_id, $value );
// save the attachment ID of the upload field as well
if ( $field->field_type == 'upload' && isset( $_POST[$field_slug . '_attachment_id'] ) ) {
$this->_save_field_value( $field_slug . '_attachment_id', $field, $object_type, $object_id, absint( $_POST[$field_slug . '_attachment_id'] ) );
}
} else {
$this->_delete_field_value( $field_slug, $field, $object_type, $object_id );
// delete the attachment ID of the upload field as well
if ( $field->field_type == 'upload' )
$this->_delete_field_value( $field_slug . '_attachment_id', $field, $object_type, $object_id );
}
}
function get_metadata_mulitifield_value( $slug, $multifield, $object_type, $object_id ) {
return $this->_get_field_value( $slug, $multifield, $object_type, $object_id, true );
}
function get_metadata_field_value( $field_slug, $field, $object_type, $object_id ) {
return $this->_get_field_value( $field_slug, $field, $object_type, $object_id );
}
function is_registered_object_type( $object_type ) {
return array_key_exists( $object_type, $this->metadata ) /*&& is_array( $this->metadata[$object_type] )*/;
}
function is_registered_group( $group_slug, $object_type ) {
return $this->is_registered_object_type( $object_type ) && array_key_exists( $group_slug, $this->get_groups_in_object_type( $object_type ) );
}
function is_registered_field( $field_slug, $group_slug = '', $object_type ) {
if ( $group_slug )
return $this->is_registered_group( $group_slug, $object_type ) && array_key_exists( $field_slug, $this->get_fields_in_group( $group_slug, $object_type ) );
else
return array_key_exists( $field_slug, $this->get_fields_in_object_type( $object_type ) );
}
function is_field_in_group( $field_slug, $group_slug, $object_type ) {
return in_array( $field_slug, $this->get_fields_in_group( $group_slug, $object_type ) );
}
function is_group_in_object_type( $group_slug, $object_type ) {
return array_key_exists( $group_slug, $this->get_groups_in_object_type( $object_type ) );
}
function is_field_addable_to_columns( $field_slug, $field ) {
return is_string( $field->display_column ) || ( is_bool( $field->display_column ) && $field->display_column );
}
function get_field( $field_slug, $group_slug, $object_type ) {
if ( $this->is_registered_field( $field_slug, $group_slug, $object_type ) ) {
if ( $group_slug ) {
return $this->get_single_field_in_group( $field_slug, $group_slug, $object_type );
} else {
return $this->get_single_field_in_object_type( $field_slug, $object_type );
}
}
return null;
}
function get_group( $group_slug, $object_type ) {
if ( $this->is_registered_group( $group_slug, $object_type ) ) {
$groups = $this->get_groups_in_object_type( $object_type );
$group = $groups[$group_slug];
return $group;
}
return null;
}
function get_object_types() {
return array_keys( $this->metadata );
}
function get_groups_in_object_type( $object_type ) {
if ( $this->is_registered_object_type( $object_type ) )
return $this->metadata[$object_type];
return array();
}
function get_single_field_in_group( $field_slug, $group_slug, $object_type ) {
$fields = $this->get_fields_in_group( $group_slug, $object_type );
return isset( $fields[$field_slug] ) ? $fields[$field_slug] : null;
}
function get_fields_in_group( $group_slug, $object_type ) {
$group = $this->get_group( $group_slug, $object_type );
if ( $group ) return (array) $group->fields;
return array();
}
function get_fields_in_multifield( $group_slug, $multifield_slug, $object_type ) {
$group = $this->get_group( $group_slug, $object_type );
$fields_in_multifield = array();
if ( empty( $group ) || empty( $group->fields ) || empty( $group->fields[$multifield_slug] ) )
return $fields_in_multifield;
$_multifields = wp_list_pluck( $group->fields, 'multifield' );
foreach ( $_multifields as $_field_key => $_multifield ) {
if ( empty( $_multifield ) || true === $_multifield )
continue;
if ( $multifield_slug == $_multifield || $multifield_slug == '_x_multifield_' . $_multifield )
$fields_in_multifield[$_field_key] = $group->fields[$_field_key];
}
return $fields_in_multifield;
}
function get_single_field_in_object_type( $field_slug, $object_type ) {
$fields = $this->get_fields_in_object_type( $object_type );
return isset( $fields[$field_slug] ) ? $fields[$field_slug] : null;
}
function get_fields_in_object_type( $object_type ) {
$fields = array();
foreach ( $this->get_groups_in_object_type( $object_type ) as $group_slug => $group ) {
$fields = array_merge( $fields, $this->get_fields_in_group( $group_slug, $object_type ) );
}
return $fields;
}
function _push_group( $group_slug, $group, $object_type ) {
$this->metadata[$object_type][$group_slug] = $group;
}
function _push_field( $field_slug, $field, $group_slug, $object_type ) {
$this->metadata[$object_type][$group_slug]->fields[$field_slug] = $field;
}
function _push_multifield( $slug, $multifield, $group_slug, $object_type ) {
$this->metadata[$object_type][$group_slug]->fields['_x_multifield_' . $slug] = $multifield;
}
function _multifield_exists_for_group_object( $slug, $group_slug, $object_type ) {
$slug = '_x_multifield_' . $slug;
return (
! empty( $this->metadata[$object_type] ) &&
! empty( $this->metadata[$object_type][$group_slug] ) &&
! empty( $this->metadata[$object_type][$group_slug]->fields ) &&
array_key_exists( $slug, $this->metadata[$object_type][$group_slug]->fields )
);
}
function _is_multifield( $slug ) {
return ( 0 === strpos( $slug, '_x_multifield' ) );
}
function is_thing_added_to_object( $thing_slug, $thing, $object_type, $object_id, $object_slug = '' ) {
if ( isset( $thing->exclude ) ) {
if ( is_callable( $thing->exclude ) )
return ! (bool) call_user_func( $thing->exclude, $thing_slug, $thing, $object_type, $object_id, $object_slug );
return ! $this->does_id_array_match_object( $thing->exclude, $object_type, $object_id, $object_slug );
}
if ( isset( $thing->include ) ) {
if ( is_callable( $thing->include ) )
return (bool) call_user_func( $thing->include, $thing_slug, $thing, $object_type, $object_id, $object_slug );
return $this->does_id_array_match_object( $thing->include, $object_type, $object_id, $object_slug );
}
return true;
}
function does_id_array_match_object( $id_array, $object_type, $object_id, $object_slug = '' ) {
if ( is_array( $id_array ) ) {
if ( isset( $id_array[$object_type] ) ) {
if ( is_array( $id_array[$object_type] ) ) {
// array( 'user' => array( 123, 'postname' ) )
return $this->does_id_array_match_object( $id_array[$object_type], $object_type, $object_id, $object_slug );
} else {
// array( 'post' => 123 )
return $this->does_id_match_object( $id_array[$object_type], $object_id, $object_slug );
}
} else {
// array( 123, 456, 'postname' )
$match = false;
foreach ( $id_array as $id ) {
if ( $this->does_id_match_object( $id, $object_id, $object_slug ) ) {
$match = true;
break;
}
}
return $match;
}
} else {
// 123 || 'postname' || 'username' || 'comment-name'(?)
return $this->does_id_match_object( $id_array, $object_id, $object_slug );
}
}
function does_id_match_object( $id, $object_id, $object_slug = '' ) {
if ( is_int( $id ) ) {
// 123
return $id == $object_id;
} elseif ( is_string( $id ) ) {
// 'postname' || 'username' || 'comment-name' ??
return $id == $object_slug;
}
return false;
}
function is_restricted_field( $field_slug, $object_type ) {
// TODO: Build this out
$post_restricted = array( 'post_title', 'post_author' );
$page_restricted = array( );
$user_restricted = array( );
switch ( $object_type ) {
case 'user':
return in_array( $field_slug, $user_restricted );
case 'page':
return in_array( $field_slug, $page_restricted ) || in_array( $field_slug, $post_restricted );
case 'post':
default:
return in_array( $field_slug, $post_restricted );
}
return false;
}
function is_restricted_group( $group_slug, $object_type ) {
// TODO: Build this out
// Built-in metaboxes: title, custom-fields, revisions, author, etc.
return false;
}
function _get_object_type_context() {
global $current_screen, $pagenow;
$object_type = '';
if ( $pagenow == 'profile.php' || $pagenow == 'user-edit.php' || $pagenow == 'users.php' ) {
return 'user';
}
if ( isset( $current_screen->post_type ) ) {
$object_type = $current_screen->post_type;
} elseif ( isset( $current_screen->base ) ) {
foreach ( $this->_builtin_object_types as $builtin_type ) {
if ( strpos( $current_screen->base, $builtin_type ) !== false ) {
$object_type = $builtin_type;
break;
}
}
}
return $object_type;
}
function _get_value_callback( $field, $object_type ) {
$callback = isset( $field->value_callback ) ? $field->value_callback : '';
if ( ! ( $callback && is_callable( $callback ) ) )
$callback = '';
return apply_filters( 'custom_metadata_manager_get_value_callback', $callback, $field, $object_type );
}
function _get_save_callback( $field, $object_type ) {
$callback = isset( $field->save_callback ) ? $field->save_callback : '';
if ( ! ( $callback && is_callable( $callback ) ) )
$callback = '';
return apply_filters( 'custom_metadata_manager_get_save_callback', $callback, $field, $object_type );
}
function get_sanitize_callback( $field, $object_type ) {
$callback = $field->sanitize_callback;
if ( ! ( $callback && is_callable( $callback ) ) )
$callback = '';
return apply_filters( 'custom_metadata_manager_get_sanitize_callback', $callback, $field, $object_type );
}
function get_display_column_callback( $field, $object_type ) {
$callback = $field->display_column_callback;
if ( ! ( $callback && is_callable( $callback ) ) )
$callback = '';