Hey all,
i’m trying to make a schedule based on CPT called ‘events’.
I have all the info already storaged.

I created a metabox with a group of fields to fill in all the event data. This is the code:

<?php
/*
Title: Info	
Post Type: event
Meta box: true
Order: 0	
*/

  piklist('field', array(
    'type' => 'group'
    ,'field' => 'module_group'
    ,'label' => 'Add blocks'
    ,'value' => 'none'
    ,'template' => 'field'
    ,'fields' => array(
      array(
		    'type' => 'datepicker',
		    'field' => 'event_date',
		    'label' => 'Date',
		    'columns' => 6,
		    'attributes' => array( // Pass HTML5 attributes in the attributes array
					'required' => 'required',
				)
			,'options' => array(
				     'dateFormat' => 'dd M yy'
		    )
	  )
	  ,array(
		    'type' => 'time',
		    'field' => 'event_time',
		    'label' => 'Time',
		    'columns' => 6,
		    'options' => array(
		      'time:Format' => 'h: s'
		    )
	  ) 
      ,array(
        'type' => 'select'
        ,'field' => 'module_select'
        ,'label' => 'Select type of Event'
        ,'columns' => 6
        ,'choices' => array(
          'none' => '…'
          ,'select_actividad' => 'Activity'
          ,'select_film' => 'Films'
        )
      )
      ,array(
		  'type'      => 'select',
		  'field'     => 'activity',
		  'label'     => 'Select an Activity',
		  'columns'   => 12,
		  'value'     => '',
		  'choices'   => array('' => '— Select one —') 
		  				 + piklist(get_posts(array(
						    'post_type'   => 'actividades',
						    'numberposts' => -1
						  )), array('ID', 'post_title')
		   )
		   ,'conditions' => array(
	          array(
	            'field' => 'module_group:module_select'
	            ,'value' => 'select_actividad'
	          )
	       )
	  )
	  ,array(
		  'type'      => 'select',
		  'field'     => 'films',
		  'label'     => 'Select a Film',
		  'columns'   => 12,
		  'value'     => '',
		  'choices'   => array('' => '— Select one —') 
		  				 + piklist(get_posts(array(
						    'post_type'   => 'film',
						    'numberposts' => -1,
						    'suppress_filters' => 0
						  )), array('ID', 'post_title')
		   )
		   ,'conditions' => array(
	          array(
	            'field' => 'module_group:module_select'
	            ,'value' => 'select_film'
	          )
	       )
	  )
	  , array(
		  'type'      => 'select',
		  'field'     => 'location',
		  'label'     => 'Select Location',
		  'columns'   => 12,
		  'value'     => '',
		  'choices'   => array('' => 'Select location …') + piklist(get_posts(array(
		    'post_type'   => 'location',
		    'numberposts' => -1,
		    'suppress_filters' => 0
		  )), array('ID', 'post_title'))
		)
		,array(
		    'type' => 'textarea'
			,'field' => 'write-location'
			,'label' => __('Or, write location name and address :')
			,'columns' => 12
		)
		,array(
		    'type' => 'text'
			,'field' => 'event_tickets'
			,'label' => __('Tickets link')
			,'columns' => 12
		)
		,array(
		    'type' => 'text'
			,'field' => 'event_subtitles'
			,'label' => __('Subtitles / Language')
			,'columns' => 12
		)
		,array(
		    'type' => 'text'
			,'field' => 'event_price'
			,'label' => __('Price €')
			,'columns' => 12
		)
		
    
    )
));

What im trying to achieve is to display the events ordered by ‘event_time’ and ‘event-time’.

I am using the ‘meta_key’ argument to pass an array to the loop with no success at all. code:

$args = array(
			    'post_type' => 'event',
			    'meta_key' => 'event_date', // name of custom field
			    'orderby' => 'meta_value',
			    "order" => 'ASC',
			    "posts_per_page" => 1,
			);
			
			print_r($args);
			
			$loop = new WP_Query($args);
			
			while ( $loop->have_posts() ) : $loop->the_post(); {
}

thanks for any further help!