please help me. i want to show display name of users in a meta box as checkbox. then i can choose many users to display some content in the post by:
if (in_array('special userID', get_post_meta($post->ID, 'U_S_C_users', true)) == true) {
// Show the content here
echo "ok";
}
by my code, i see this error:
warning: in_array() expects parameter 2 to be array in string:::: if (in_array($user->ID,$savedusers)){
my codes:
<?php
/* Define the custom box */
add_action('add_meta_boxes', 'User_specific_content_box');
/* Adds a box to the main column on the custom post type edit screens */
function User_specific_content_box() {
add_meta_box('User_specific_content', __( 'User specific content box'),'User_specific_content_box_inner','class');
}
/* Prints the box content */
function User_specific_content_box_inner() {
global $post,$wp_roles;
$savedusers = get_post_meta($post->ID, 'U_S_C_users',true);
var_dump($savedusers);
// Use nonce for verification
wp_nonce_field( plugin_basename(__FILE__), 'User_specific_content_box_inner' );
echo '<h4>'.__('By User Name:').'</h4>';
$blogusers = get_users('blog_id=1&orderby=nicename');
$usercount = 0;
foreach ($blogusers as $user) {
echo '<input type="checkbox" name="U_S_C_users" value="'.$user->ID.'"';
if (in_array($user->ID,$savedusers)){
echo ' checked';
}
echo '>'.$user->display_name.' ';
$usercount = $usercount + 1;
if ($usercount > 5){
echo '<br/>';
$usercount = 0;
}
}
}
/* Save Meta Box */
add_action('save_post', 'User_specific_content_box_inner_save');
/* When the post is saved, saves our custom data */
function User_specific_content_box_inner_save( $post_id ) {
global $post;
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times
if ( !wp_verify_nonce( $_POST['User_specific_content_box_inner'], plugin_basename(__FILE__) ) )
return $post_id;
// verify if this is an auto save routine.
// If it is our form has not been submitted, so we dont want to do anything
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return $post_id;
// OK, we're authenticated: we need to find and save the data
$savedusers = get_post_meta($post_id, 'U_S_C_users',true);
if (isset($_POST['U_S_C_users']) && !empty($_POST['U_S_C_users'])){
foreach ($_POST['U_S_C_users'] as $u){
$new_users[] = $u;
}
update_post_meta($post_id, 'U_S_C_users', $new_users);
}else{
if (count($savedusers) > 0){
delete_post_meta($post_id, 'U_S_C_users');
}
}
}
?>
my problems:
1- i see that error
2- i want to show just users with author role.
thanks to help me
please help me. i want to show display name of users in a meta box as checkbox. then i can choose many users to display some content in the post by:
if (in_array('special userID', get_post_meta($post->ID, 'U_S_C_users', true)) == true) {
// Show the content here
echo "ok";
}
by my code, i see this error:
warning: in_array() expects parameter 2 to be array in string:::: if (in_array($user->ID,$savedusers)){
my codes:
<?php
/* Define the custom box */
add_action('add_meta_boxes', 'User_specific_content_box');
/* Adds a box to the main column on the custom post type edit screens */
function User_specific_content_box() {
add_meta_box('User_specific_content', __( 'User specific content box'),'User_specific_content_box_inner','class');
}
/* Prints the box content */
function User_specific_content_box_inner() {
global $post,$wp_roles;
$savedusers = get_post_meta($post->ID, 'U_S_C_users',true);
var_dump($savedusers);
// Use nonce for verification
wp_nonce_field( plugin_basename(__FILE__), 'User_specific_content_box_inner' );
echo '<h4>'.__('By User Name:').'</h4>';
$blogusers = get_users('blog_id=1&orderby=nicename');
$usercount = 0;
foreach ($blogusers as $user) {
echo '<input type="checkbox" name="U_S_C_users" value="'.$user->ID.'"';
if (in_array($user->ID,$savedusers)){
echo ' checked';
}
echo '>'.$user->display_name.' ';
$usercount = $usercount + 1;
if ($usercount > 5){
echo '<br/>';
$usercount = 0;
}
}
}
/* Save Meta Box */
add_action('save_post', 'User_specific_content_box_inner_save');
/* When the post is saved, saves our custom data */
function User_specific_content_box_inner_save( $post_id ) {
global $post;
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times
if ( !wp_verify_nonce( $_POST['User_specific_content_box_inner'], plugin_basename(__FILE__) ) )
return $post_id;
// verify if this is an auto save routine.
// If it is our form has not been submitted, so we dont want to do anything
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return $post_id;
// OK, we're authenticated: we need to find and save the data
$savedusers = get_post_meta($post_id, 'U_S_C_users',true);
if (isset($_POST['U_S_C_users']) && !empty($_POST['U_S_C_users'])){
foreach ($_POST['U_S_C_users'] as $u){
$new_users[] = $u;
}
update_post_meta($post_id, 'U_S_C_users', $new_users);
}else{
if (count($savedusers) > 0){
delete_post_meta($post_id, 'U_S_C_users');
}
}
}
?>
my problems:
1- i see that error
2- i want to show just users with author role.
thanks to help me
That error happened because the $savedusers is not an array — in_array() requires the second parameter be a valid array, and if it's not, that error (or warning) is thrown.
And a simple fix to that is by type-casting the variable to an array like so:
$savedusers = (array) get_post_meta( $post_id, 'U_S_C_users', true );
Or better, use wp_parse_id_list() which makes sure $savedusers is an array of (user) IDs:
$savedusers = wp_parse_id_list( get_post_meta( $post->ID, 'U_S_C_users', true ) );
(You'll make the above change in User_specific_content_box_inner() and User_specific_content_box_inner_save() where get_post_meta() is called.)
Secondly, the checkboxes should be made an array by appending [] to their name like so:
echo '<input type="checkbox" name="U_S_C_users[]" value="'.$user->ID.'"';