为自定义帖子类型添加并创建多个元框

问题描述

我正在尝试保存我创建的3个元框的输入。这是下面的代码。我错过了什么，因为我只保存了smashing-post-class2 id 3次。

未保存的两个Meta框是smashing-post-class和smashing-post-class1。输入字段仅保存来自smashing-post-class2的输入。

/* Fire our Meta Box setup function on the post editor screen. */
add_action( 'add_Meta_Boxes','smashing_add_post_Meta_Boxes' );
add_action( 'save_post','smashing_save_post_class_Meta',10,2 );


  /* Create one or more Meta Boxes to be displayed on the post editor screen. */
function smashing_add_post_Meta_Boxes() {

    // sku,price,short description
    add_Meta_Box(
      'smashing-post-class',// Unique ID
      esc_html__( 'SKU','SKU' ),// Title
      'smashing_post_class_Meta_Box',// Callback function
      'products',// Admin page (or post type)
      'normal',// Context
      'default'         // Priority
    );
    add_Meta_Box(
        'smashing-post-class1',// Unique ID
        esc_html__( 'Price','Price' ),// Title
        'smashing_post_class_Meta_Box',// Callback function
        'products',// Admin page (or post type)
        'normal',// Context
        'default'         // Priority
      );
      add_Meta_Box(
        'smashing-post-classs2',// Unique ID
        esc_html__( 'Short Description','Short Description' ),// Context
        'default'         // Priority
      );

  }


/* display the post Meta Box. */
function smashing_post_class_Meta_Box( $post ) { ?>

    <?PHP wp_nonce_field( basename( __FILE__ ),'smashing_post_class_nonce' ); ?>
  
    <p>
      <label for="smashing-post-class"><?PHP _e( "Add Meta tag",'example' ); ?></label>
      <br />
      <input class="widefat" type="text" name="smashing-post-class" id="smashing-post-class" value="<?PHP echo esc_attr( get_post_meta( $post->ID,'smashing_post_class',true ) ); ?>" size="30" />
    </p>
    
  <?PHP }


/* Save the Meta Box’s post Metadata. */
function smashing_save_post_class_Meta( $post_id,$post ) {

    /* Verify the nonce before proceeding. */
    if ( !isset( $_POST['smashing_post_class_nonce'] ) || !wp_verify_nonce( $_POST['smashing_post_class_nonce'],basename( __FILE__ ) ) )
      return $post_id;
  
    /* Get the post type object. */
    $post_type = get_post_type_object( $post->post_type );
  
    /* Check if the current user has permission to edit the post. */
    if ( !current_user_can( $post_type->cap->edit_post,$post_id ) )
      return $post_id;
  
    /* Get the posted data and sanitize it for use as an HTML class. */
    $new_Meta_value = ( isset( $_POST['smashing-post-class'] ) ? sanitize_html_class( $_POST['smashing-post-class'] ) : ’ );
  
    /* Get the Meta key. */
    $Meta_key = 'smashing_post_class';
  
    /* Get the Meta value of the custom field key. */
    $Meta_value = get_post_meta( $post_id,$Meta_key,true );


         /* If a new Meta value was added and there was no prevIoUs value,add it. */
         if ( $new_Meta_value && '' == $Meta_value )
         add_post_Meta( $post_id,$new_Meta_value,true );
         /* If the new Meta value does not match the old value,update it. */
     elseif ( $new_Meta_value && $new_Meta_value != $Meta_value )
         update_post_Meta( $post_id,$new_Meta_value );
         /* If there is no new Meta value but an old value exists,delete it. */
     elseif ( '' == $new_Meta_value && $Meta_value )
         delete_post_Meta( $post_id,$Meta_value );      
 
  
  }

解决方法

您必须为每个输入创建一个单独的元字段。 在您的示例中，您刚刚创建了一个输入并进行了更新。

您可以在'save_post'钩中尝试使用

update_post_meta( $post_id,'smashing_post_class_2',$_POST['smashing_post_class_2'] );
update_post_meta( $post_id,'smashing_post_class_3',$_POST['smashing_post_class_3'] );

update_post_meta()函数将创建该字段（如果不存在），因此您无需创建它。