reassign affiliate in AR

gistfile1.aw

<?php


		add_action( 'edit_user_profile', 'edit_user_profile' );
		add_action( 'edit_user_profile_update', 'edit_user_profile_update' );
	
	function edit_user_profile( $user ) {
		?>
		<h3><?php _e("Affiliate Assignment", "blank"); ?></h3>
 
		<table class="form-table">
		<tr>
			<th><label for="assigned-affiliate"><?php _e("Affiliate Username"); ?></label></th>
			<td>
				<?php
					$affiliate_id = get_user_meta( $user->ID, 'wafp-affiliate-referrer', true );
					$affiliate = new WP_User( $affiliate_id );
				?>
				<input type="text" name="assigned-affiliate" id="assigned-affiliate" value="<?php echo esc_attr( $affiliate->user_login ); ?>" class="regular-text" /><br />
				<span class="description"><?php _e("Please enter the username of the affiliate you want to assign to this user."); ?></span>
			</td>
		</tr>
		</table>
		<?php
	}
	function edit_user_profile_update( $user_id ) {
		if ( !current_user_can( 'edit_user', $user_id ) ) return false;
		
		if ( !isset( $_POST['assigned-affiliate'] ) ) return false;
		
		$affiliate = get_user_by( 'login', $_POST['assigned-affiliate'] );
		update_user_meta( $user_id, 'wafp-affiliate-referrer', $affiliate->ID );
	}