Reusable meta box for WordPress - Grouped input fields

grouped-input-fields

Works when plugged in to custom reusable metaboxes by TammyHart 
This code takes the values of THREE input fields and saves them as one meta option value. This works particularly well for time inputs where the user enters the hour, minute, and am/pm and you want to store a unix timestamp OR a 24 hour time stamp 

// settings for grouped input fields 
	array(
	     'label'=> 'Start Time',
	     'desc'  => '',
	     'id'    => $prefix.'startselect',
	     'type'  => 'timegroup',
		 'options' => array(
		 		'hour' => array(
		           'label'=> '',
		           'desc'  => '',
		           'id'    => $prefix.'hourselect',
		           'type'  => 'hourselect',
					'options' => getHourIntervals(),
		     	     ),
       
		      'min' => array(
		            'label'=> '',
		            'desc'  => '',
		            'id'    => $prefix.'minselect',
		            'type'  => 'minselect',
		       		 'options' => getMinIntervals(),
		  	         ),
		        
		       'meridiem' => array(
		             'label'=> '',
		             'desc'  => '',
		             'id'    => $prefix.'meridiemselect',
		             'type'  => 'meridiemselect',
		        	  'options' => array(
		        		 				'am' => array(
		        		 				    'label' => 'am', 
		        		 					'value' => 'am'
		        		 					),
		        		 		    	 'pm' =>  array(
		        		 		    	    'label' => 'pm', 
		        		 					'value' => 'pm'),
		        		 					)
		       	     )
		         
		             )
	),
	

// HTML form output for your group field type (specifically coded for hour, minute, meridien) This has conditional logic in it for taking the single value in the database and outputting the proper values into the form fields so that the form is autofilled with the existing values. 


 case 'timegroup': 
	                    	echo '<div id="'.$field['id'].'" id="'.$field['id'].'">';
	                    	 	foreach ($field['options'] as $option) {
	                    	 		echo '<select name="'.$field['id'].'['.$option['id'].']" id="'.$option['id'].'">';	
		                    	 		foreach($option['options'] as $the_option){ 

											$time =  strtotime($meta); 
											$hour = date('h', $time);
											$min = date('i', $time);
											$meridiem = date('a', $time);
	                    	 		                   	 		

										if($option['type'] == 'hourselect'){
										
		                    	     	echo '<option', $hour == $the_option['value'] ? ' selected="selected"' : '', ' value="'.$the_option['value'].'">'.$the_option['label'].'</option>';
		                    	     	
		                    	     	}elseif($option['type'] == 'minselect') {
		                    	        	echo '<option', $min == $the_option['value'] ? ' selected="selected"' : '', ' value="'.$the_option['value'].'">'.$the_option['label'].'</option>';
		                    	     	
		                    	     	}
		                    	         elseif($option['type'] == 'meridiemselect') {
		                    	      
		                    	        	echo '<option', $meridiem == $the_option['value'] ? ' selected="selected"' : '', ' value="'.$the_option['value'].'">'.$the_option['label'].'</option>';	
		                    	     
		                    	     	 }else{
		                    	        
		                    	        	echo '<option', $meridiem == $the_option['value'] ? ' selected="selected"' : '', ' value="'.$the_option['value'].'">'. 
		                    	        	   $the_option['label'].'</option>';	
		                    	     		
		                    	     		}
		                    	     	} //end foreach options as the_option
		                    	  echo '</select>';
	                    	 } //end foreach field as option 
	                    	echo '</div>';
	                    	break;
	                    	

// Save these fields differently than other fields because we have to combine the values of the hour, minutes, and meridian into one update_post_meta() call. This could probably be made more effecient 


	      //check if it's a grouped input field 	
	      if($fieldName == 'custom_startselect'){
	      			// get value of "hour" input
	                $hour = $_POST['custom_startselect']['custom_hourselect'];
	                //get value of "minput" input 
	                $min = $_POST['custom_startselect']['custom_minselect']; 
	                //get value of AM/PM 
	                $meridien = $_POST['custom_startselect']['custom_meridiemselect'];
	                // group them togher so output is hour:minute am/pm 
	                $group = $hour.':'.$min.$meridien; 
	                //format is 24 hour time code 
	                $time = date("H:i", strtotime($group));
					//update post meta field 
	                update_post_meta($post_id,  $fieldName , $time);
	                
	                }