Article source link for posts

2 comments

1. Thats what meta_boxes are for. First you need to register the metabox within the page or post with the function add_meta_box. Then you want to get that value with get_post_meta on the page where you want the “Source”.

   This goes into your functions.php file:

   /* Define the custom box */
   add_action( 'add_meta_boxes', 'wpse_source_link' );
   
   /* Do something with the data entered */
   add_action( 'save_post', 'wpse_source_link_save' );
   
   /* Adds a box to the main column on the Post and Page edit screens */
   function wpse_source_link() {
   
       add_meta_box(
           'source_link',
           __( 'Source-link', 'myplugin_textdomain' ), 
           'wpse_source_meta_box',
           'post',
           'side'
       );
   }
   
   /* Prints the box content */
   function wpse_source_meta_box( $post ) {
   
     // Use nonce for verification
     wp_nonce_field( plugin_basename( __FILE__ ), 'myplugin_noncename' );
   
     // The actual fields for data entry
     echo '<input type="text" id="source-link"" name="source_link" value="'. get_post_meta( $post->ID, '_source_link', true ) .'" size="25" />';
   }
   
   /* When the post is saved, saves our custom data */
   function wpse_source_link_save( $post_id ) {
     // verify if this is an auto save routine. 
     // If it is our form has not been submitted, so we dont want to do anything
     if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) 
         return;
   
     // 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['myplugin_noncename'], plugin_basename( __FILE__ ) ) )
         return;
   
   
     // Check permissions
   
     if ( current_user_can( 'edit_post', $post_id ) ) {
   
         update_post_meta( $post_id, '_source_link', $_POST['source_link'] );
   
      }
   }
   

   This code register the meta_box and stores the value in post_meta as “_source_link”.

   It will look like this:

   

   Then you want to get the value in the post, Use get_post_meta:

   <?php echo esc_url( get_post_meta( $post->ID, '_source_link', true ) ); ?>
   

   You should read about:
   add_meta_boxes,
   update_post_meta and
   get_post_meta

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2. You can use ACF,

   1. Create field to enter the link and then create a field to enter the link text
   2. Use the code Source: <a href="<?php echo get_field('url_field'); ?>"><?php echo get_field('link_text'); ?></a>

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