Ajax Link Using symfony

Ajax Link

Ajax links form a large share of the Ajax interactions available in Web 2.0 applications. The link_to_remote() helper outputs a link that calls, not surprisingly, a remote function. The syntax is very similar to that of link_to() (except that the second parameter is the associative array of Ajax options), as shown in Listing 11-9.

Listing 11-9 - Ajax Link with the link_to_remote() Helper

 echo link_to_remote('Delete this post', array(
 'update' => 'feedback',
 'url'    => 'post/delete?id='.$post->getId(),
)) ?>

In this example, clicking the 'Delete this post' link will issue a call to the post/delete action in the background. The response returned by the server will appear in the element of id feedback. This process is illustrated in Figure 11-1.

Figure 11-1 - Triggering a remote update with a hyperlink

You can use an image instead of a string to bear the link, use a rule name instead of an internal module/action URL, and add options to the tag in a third argument, as shown in Listing 11-10.

Listing 11-10 - Options of the link_to_remote() Helper

"emails">
 echo link_to_remote(image_tag('refresh'), array(
 'update' => 'emails',
 'url'    => '@list_emails',
), array(
 'class'  => 'ajax_link',
)) ?>