Can’t Add Custom Meta Box to Custom Post Type

3 comments

1. add_action('add_meta_boxes', 'add_enk_metaboxes')
   

   You also need to create a function for the html for the box

   e.g.

   function wpt_events_location($post) { // your 3rd parameter is the function callback
        $metavalue= get_post_meta($post->id,'metakey',true);
        echo '<input type="text" name="formfield" value="'.$metavalue.'" >';
   }
   

   and a callback to save

   function save_post_meta($post_id){
     if($_POST['formfield'])
     update_post_meta($post_id,'metakey',$_POST['formfield'];
   
   }
   
   add_action('save_post', 'save_post_meta');
   

   The codex has some good examples as i remember including nonces and OOP style. PS note there is no security above, you still need to sanitize values etc.

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2. You Must try this:

   First you create a meta box for your post type

   <?php    
   // Add the Events Meta Boxes
       function add_enk_metaboxes($post) {
         add_meta_box('wpt_events_location', 'Event Location', 'wpt_events_location', 'events', 'side', 'default');
       }
       add_action('add_meta_boxes','add_enk_metaboxes');
   

   Then you make a function for meta fields:

   function wpt_events_location($post){
   
       $txtEventLocation = get_post_meta($post->ID, 'txtEventLocation', true);
   ?>
       <table width="100%" border="0" cellspacing="4" cellpadding="0">
           <tr>
               <td width="16%">
                   <strong>Event Location:</strong>
               </td>
               <td width="84%">
                   <input type="text" name="txtEventLocation" id="txtEventLocation" size="72%" value="<?php echo $txtEventLocation ?>" />
               </td>
           </tr>
       </table>
   <?php
   }
   

   Then you save the meta field data:

   add_action('save_post','save_event_location');
   function save_event_location(){
       global $post;
   
       $txtEventLocation = $_POST['txtEventLocation'];
   
       update_post_meta( $post->ID, 'txtEventLocation', $txtEventLocation);
   }
   
   ?>
   

   Hope you find your solution.

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3. Code will help you to create custom metabox in wordpress

   <?php
   
   add_action( 'add_meta_boxes', 'add_custom_metaboxes' );
   
   
   // Add the Events Meta Boxes
   
   function add_custom_metaboxes() {
       //add_meta_box('wpt_events_date', 'Event Date', 'wpt_events_date', 'wpstore', 'side', 'default');
       add_meta_box('wpt_events_location', 'Address Location', 'wpt_events_location', 'post_tyme_name', 'normal', 'high');
   }
   
   // The Event Location Metabox
   
   function wpt_events_location() {
       global $post;
   
       // Noncename needed to verify where the data originated
       echo '<input type="hidden" name="eventmeta_noncename" id="eventmeta_noncename" value="' . 
       wp_create_nonce( plugin_basename(__FILE__) ) . '" />';
   
       // Get the location data if its already been entered
       $addressline1 = get_post_meta($post->ID, '_addressline1', true);
       $addressline2 = get_post_meta($post->ID, '_addressline2', true);
   
   
       // Echo out the field
           echo '<p>Address Line 1:</p>';
           echo '<input type="text" name="_addressline1" value="' . $addressline1  . '" class="widefat" />';
           echo '<p>Address Line 2</p>';
           echo '<input type="text" name="_addressline2" value="' . $addressline2  . '" class="widefat" />';
   }
   
   
   // Save the Metabox Data
   
   function wpt_save_events_meta($post_id, $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['eventmeta_noncename'], plugin_basename(__FILE__) )) {
       return $post->ID;
       }
   
       // Is the user allowed to edit the post or page?
       if ( !current_user_can( 'edit_post', $post->ID ))
           return $post->ID;
   
       // OK, we're authenticated: we need to find and save the data
       // We'll put it into an array to make it easier to loop though.
   
       $events_meta['_addressline1'] = $_POST['_addressline1'];
       $events_meta['_addressline2'] = $_POST['_addressline2'];
   
       // Add values of $events_meta as custom fields
   
       foreach ($events_meta as $key => $value) { // Cycle through the $events_meta array!
           if( $post->post_type == 'revision' ) return; // Don't store custom data twice
           $value = implode(',', (array)$value); // If $value is an array, make it a CSV (unlikely)
           if(get_post_meta($post->ID, $key, FALSE)) { // If the custom field already has a value
               update_post_meta($post->ID, $key, $value);
           } else { // If the custom field doesn't have a value
               add_post_meta($post->ID, $key, $value);
           }
           if(!$value) delete_post_meta($post->ID, $key); // Delete if blank
       }
   
   }
   
   add_action('save_post', 'wpt_save_events_meta', 1, 2); // save the custom fields
   

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