/core/controllers/post.php

<?php  
 
/** 
*  acf_controller_post 
* 
*  This class contains the functionality to add ACF fields to a post edit form 
* 
*  @type    class 
*  @date    5/09/13 
*  @since    3.1.8 
* 
*/ 
 
class acf_controller_post 
{ 
   
  /** 
  *  Constructor 
  * 
  *  This function will construct all the neccessary actions and filters 
  * 
  *  @type    function 
  *  @date    23/06/12 
  *  @since    3.1.8 
  * 
  *  @param    N/A 
  *  @return    N/A 
  */ 
   
  function __construct() 
  { 
      // actions 
      add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts')); 
      add_action('save_post', array($this, 'save_post'), 10, 1); 
       
       
      // ajax 
      add_action('wp_ajax_acf/post/render_fields', array($this, 'ajax_render_fields')); 
      add_action('wp_ajax_acf/post/get_style', array($this, 'ajax_get_style')); 
  } 
   
   
  /** 
  *  validate_page 
  * 
  *  This function will check if the current page is for a post/page edit form 
  * 
  *  @type    function 
  *  @date    23/06/12 
  *  @since    3.1.8 
  * 
  *  @param    N/A 
  *  @return    (boolean) 
  */ 
   
  function validate_page() 
  { 
      // global 
      global $pagenow, $typenow; 
       
       
      // vars 
      $return = false; 
       
       
      // validate page 
      if( in_array( $pagenow, array('post.php', 'post-new.php') ) ) 
      { 
       
          // validate post type 
          global $typenow; 
           
          if( $typenow != "acf" ) 
          { 
              $return = true; 
          } 
           
      } 
       
       
      // validate page (Shopp) 
      if( $pagenow == "admin.php" && isset( $_GET['page'] ) && $_GET['page'] == "shopp-products" && isset( $_GET['id'] ) ) 
      { 
          $return = true; 
      } 
       
       
      // return 
      return $return; 
  } 
   
   
  /** 
  *  admin_enqueue_scripts 
  * 
  *  This action is run after post query but before any admin script / head actions.  
  *  It is a good place to register all actions. 
  * 
  *  @type    action (admin_enqueue_scripts) 
  *  @date    26/01/13 
  *  @since    3.6.0 
  * 
  *  @param    N/A 
  *  @return    N/A 
  */ 
   
  function admin_enqueue_scripts() 
  { 
      // validate page 
      if( ! $this->validate_page() ) 
      { 
          return; 
      } 
 
       
      // actions 
      do_action('acf/input/admin_enqueue_scripts'); 
       
      add_action('admin_head', array($this, 'admin_head')); 
  } 
   
   
  /** 
  *  admin_head 
  * 
  *  This action will find and add field groups to the current edit page 
  * 
  *  @type    action (admin_head) 
  *  @date    23/06/12 
  *  @since    3.1.8 
  * 
  *  @param    N/A 
  *  @return    N/A 
  */ 
   
  function admin_head() 
  { 
      // globals 
      global $post, $pagenow, $typenow; 
       
       
      // shopp 
      if( $pagenow == "admin.php" && isset( $_GET['page'] ) && $_GET['page'] == "shopp-products" && isset( $_GET['id'] ) ) 
      { 
          $typenow = "shopp_product"; 
      } 
       
       
      // vars 
      $post_id = $post ? $post->ID : 0; 
       
           
      // get field groups 
      $filter = array(  
          'post_id' => $post_id,  
          'post_type' => $typenow  
 ); 
      $metabox_ids = array(); 
      $metabox_ids = apply_filters( 'acf/location/match_field_groups', $metabox_ids, $filter ); 
       
       
      // get style of first field group 
      $style = ''; 
      if( isset($metabox_ids[0]) ) 
      { 
          $style = $this->get_style( $metabox_ids[0] ); 
      } 
       
       
      // Style 
      echo '<style type="text/css" id="acf_style" >' . $style . '</style>'; 
       
       
      // add user js + css 
      do_action('acf/input/admin_head'); 
       
       
      // get field groups 
      $acfs = apply_filters('acf/get_field_groups', array()); 
       
       
      if( $acfs ) 
      { 
          foreach( $acfs as $acf ) 
          { 
              // load options 
              $acf['options'] = apply_filters('acf/field_group/get_options', array(), $acf['id']); 
               
               
              // vars 
              $show = in_array( $acf['id'], $metabox_ids ) ? 1 : 0; 
               
               
              // priority 
              $priority = 'high'; 
              if( $acf['options']['position'] == 'side' ) 
              { 
                  $priority = 'core'; 
              } 
              $priority = apply_filters('acf/input/meta_box_priority', $priority, $acf); 
               
               
              // add meta box 
              add_meta_box( 
                  'acf_' . $acf['id'],  
                  $acf['title'],  
                  array($this, 'meta_box_input'),  
                  $typenow,  
                  $acf['options']['position'],  
                  $priority,  
                  array( 'field_group' => $acf, 'show' => $show, 'post_id' => $post_id ) 
 ); 
               
          } 
          // foreach($acfs as $acf) 
      } 
      // if($acfs) 
       
       
      // Allow 'acf_after_title' metabox position 
      add_action('edit_form_after_title', array($this, 'edit_form_after_title')); 
       
       
      // remove ACF from meta postbox 
      add_filter( 'is_protected_meta', array($this, 'is_protected_meta'), 10, 3 ); 
  } 
   
   
  /** 
  *  edit_form_after_title 
  * 
  *  This action will allow ACF to render metaboxes after the title 
  * 
  *  @type    action 
  *  @date    17/08/13 
  * 
  *  @param    N/A 
  *  @return    N/A 
  */ 
   
  function edit_form_after_title() 
  { 
      // globals 
      global $post, $wp_meta_boxes; 
       
       
      // render 
      do_meta_boxes( get_current_screen(), 'acf_after_title', $post); 
       
       
      // clean up 
      unset( $wp_meta_boxes['post']['acf_after_title'] ); 
       
       
      // preview hack 
      // the following code will add a hidden input which will trigger WP to create a revision apon save 
      // http://support.advancedcustomfields.com/forums/topic/preview-solution/#post-4106 
      ?> 
      <div style="display:none"> 
          <input type="hidden" name="acf_has_changed" id="acf-has-changed" value="0" /> 
      </div> 
      <?php 
  } 
   
   
  /** 
  *  meta_box_input 
  * 
  *  @description:  
  *  @since 1.0.0 
  *  @created: 23/06/12 
  */ 
   
  function meta_box_input( $post, $args ) 
  { 
      // extract $args 
      extract( $args ); 
       
       
      // classes 
      $class = 'acf_postbox ' . $args['field_group']['options']['layout']; 
      $toggle_class = 'acf_postbox-toggle'; 
       
       
      if( ! $args['show'] ) 
      { 
          $class .= ' acf-hidden'; 
          $toggle_class .= ' acf-hidden'; 
      } 
       
       
      // HTML 
      if( $args['show'] ) 
      { 
          $fields = apply_filters('acf/field_group/get_fields', array(), $args['field_group']['id']); 
   
          do_action('acf/create_fields', $fields, $args['post_id']); 
      } 
      else 
      { 
          echo '<div class="acf-replace-with-fields"><div class="acf-loading"></div></div>'; 
      } 
       
       
      // nonce 
      echo '<div style="display:none">'; 
          echo '<input type="hidden" name="acf_nonce" value="' . wp_create_nonce( 'input' ) . '" />'; 
          ?> 
<script type="text/javascript"> 
(function($) { 
   
  $('#<?php echo $id; ?>').addClass('<?php echo $class; ?>').removeClass('hide-if-js'); 
  $('#adv-settings label[for="<?php echo $id; ?>-hide"]').addClass('<?php echo $toggle_class; ?>'); 
   
})(jQuery);     
</script> 
          <?php 
      echo '</div>'; 
  } 
   
   
  /** 
  *  get_style 
  * 
  *  @description: called by admin_head to generate acf css style (hide other metaboxes) 
  *  @since 2.0.5 
  *  @created: 23/06/12 
  */ 
 
  function get_style( $acf_id ) 
  { 
      // vars 
      $options = apply_filters('acf/field_group/get_options', array(), $acf_id); 
      $html = ''; 
       
       
      // add style to html  
      if( in_array('permalink', $options['hide_on_screen']) ) 
      { 
          $html .= '#edit-slug-box {display: none;} '; 
      } 
      if( in_array('the_content', $options['hide_on_screen']) ) 
      { 
          $html .= '#postdivrich {display: none;} '; 
      } 
      if( in_array('excerpt', $options['hide_on_screen']) ) 
      { 
          $html .= '#postexcerpt, #screen-meta label[for=postexcerpt-hide] {display: none;} '; 
      } 
      if( in_array('custom_fields', $options['hide_on_screen']) ) 
      { 
          $html .= '#postcustom, #screen-meta label[for=postcustom-hide] { display: none; } '; 
      } 
      if( in_array('discussion', $options['hide_on_screen']) ) 
      { 
          $html .= '#commentstatusdiv, #screen-meta label[for=commentstatusdiv-hide] {display: none;} '; 
      } 
      if( in_array('comments', $options['hide_on_screen']) ) 
      { 
          $html .= '#commentsdiv, #screen-meta label[for=commentsdiv-hide] {display: none;} '; 
      } 
      if( in_array('slug', $options['hide_on_screen']) ) 
      { 
          $html .= '#slugdiv, #screen-meta label[for=slugdiv-hide] {display: none;} '; 
      } 
      if( in_array('author', $options['hide_on_screen']) ) 
      { 
          $html .= '#authordiv, #screen-meta label[for=authordiv-hide] {display: none;} '; 
      } 
      if( in_array('format', $options['hide_on_screen']) ) 
      { 
          $html .= '#formatdiv, #screen-meta label[for=formatdiv-hide] {display: none;} '; 
      } 
      if( in_array('featured_image', $options['hide_on_screen']) ) 
      { 
          $html .= '#postimagediv, #screen-meta label[for=postimagediv-hide] {display: none;} '; 
      } 
      if( in_array('revisions', $options['hide_on_screen']) ) 
      { 
          $html .= '#revisionsdiv, #screen-meta label[for=revisionsdiv-hide] {display: none;} '; 
      } 
      if( in_array('categories', $options['hide_on_screen']) ) 
      { 
          $html .= '#categorydiv, #screen-meta label[for=categorydiv-hide] {display: none;} '; 
      } 
      if( in_array('tags', $options['hide_on_screen']) ) 
      { 
          $html .= '#tagsdiv-post_tag, #screen-meta label[for=tagsdiv-post_tag-hide] {display: none;} '; 
      } 
      if( in_array('send-trackbacks', $options['hide_on_screen']) ) 
      { 
          $html .= '#trackbacksdiv, #screen-meta label[for=trackbacksdiv-hide] {display: none;} '; 
      } 
       
               
      return $html; 
  } 
   
   
  /** 
  *  ajax_get_input_style 
  * 
  *  @description: called by input-actions.js to hide / show other metaboxes 
  *  @since 2.0.5 
  *  @created: 23/06/12 
  */ 
   
  function ajax_get_style() 
  { 
      // vars 
      $options = array( 
          'acf_id' => 0,  
          'nonce' => '' 
 ); 
       
      // load post options 
      $options = array_merge($options, $_POST); 
       
       
      // verify nonce 
      if( ! wp_verify_nonce($options['nonce'], 'acf_nonce') ) 
      { 
          die(0); 
      } 
       
       
      // return style 
      echo $this->get_style( $options['acf_id'] ); 
       
       
      // die 
      die; 
  } 
   
   
  /** 
  *  ajax_render_fields 
  * 
  *  @description:  
  *  @since 3.1.6 
  *  @created: 23/06/12 
  */ 
 
  function ajax_render_fields() 
  { 
       
      // defaults 
      $options = array( 
          'acf_id' => 0,  
          'post_id' => 0,  
          'nonce' => '' 
 ); 
       
       
      // load post options 
      $options = array_merge($options, $_POST); 
       
       
      // verify nonce 
      if( ! wp_verify_nonce($options['nonce'], 'acf_nonce') ) 
      { 
          die(0); 
      } 
       
       
      // get acfs 
      $acfs = apply_filters('acf/get_field_groups', array()); 
      if( $acfs ) 
      { 
          foreach( $acfs as $acf ) 
          { 
              if( $acf['id'] == $options['acf_id'] ) 
              { 
                  $fields = apply_filters('acf/field_group/get_fields', array(), $acf['id']); 
                   
                  do_action('acf/create_fields', $fields, $options['post_id']); 
                   
                  break; 
              } 
          } 
      } 
 
      die(); 
       
  } 
   
   
  /** 
  *  save_post 
  * 
  *  @description: Saves the field / location / option data for a field group 
  *  @since 1.0.0 
  *  @created: 23/06/12 
  */ 
   
  function save_post( $post_id ) 
  {     
       
      // do not save if this is an auto save routine 
      if( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) 
      { 
          return $post_id; 
      } 
       
       
      // verify nonce 
      if( !isset($_POST['acf_nonce'], $_POST['fields']) || !wp_verify_nonce($_POST['acf_nonce'], 'input') ) 
      { 
          return $post_id; 
      } 
       
       
      // if save lock contains a value, the save_post action is already running for another post. 
      // this would imply that the user is hooking into an ACF update_value or save_post action and inserting a new post 
      // if this is the case, we do not want to save all the $POST data to this post. 
      if( isset($GLOBALS['acf_save_lock']) && $GLOBALS['acf_save_lock'] ) 
      { 
          return $post_id; 
      } 
       
       
      // update the post (may even be a revision / autosave preview) 
      do_action('acf/save_post', $post_id); 
       
  } 
   
   
  /** 
  *  is_protected_meta 
  * 
  *  This function will remove any ACF meta from showing in the meta postbox 
  * 
  *  @type    function 
  *  @date    12/04/2014 
  *  @since    5.0.0 
  * 
  *  @param    $post_id (int) 
  *  @return    $post_id (int) 
  */ 
   
  function is_protected_meta( $protected, $meta_key, $meta_type ) { 
       
      // globals 
      global $post; 
       
       
      // if acf_get_field_reference returns a valid key, this is an acf value, so protect it! 
      if( !$protected ) { 
           
          $reference = get_field_reference( $meta_key, $post->ID ); 
           
          if( substr($reference, 0, 6) === 'field_' ) { 
               
              $protected = true; 
               
          }  
           
      } 
       
       
      // return 
      return $protected; 
               
  } 
   
           
} 
 
new acf_controller_post(); 
 
?>