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We have two templates for our guestbook, one for viewing and one for adding a new entry.

/web/www.example.com/smarty/guestbook/templates/guestbook.tpl

{* Smarty *}

<table border="0" width="300">
  <tr>
    <th colspan="2" bgcolor="#d1d1d1">
      Guestbook Entries (<a href="{$SCRIPT_NAME}?action=add">add</a>)</th>
  </tr>
  {foreach from=$data item="entry"}
    <tr bgcolor="{cycle values="#dedede,#eeeeee" advance=false}">
      <td>{$entry.Name|escape}</td>        
    <td align="right">
      {$entry.EntryDate|date_format:"%e %b, %Y %H:%M:%S"}</td>        
    </tr>
    <tr>
      <td colspan="2" bgcolor="{cycle values="#dedede,#eeeeee"}">
        {$entry.Comment|escape}</td>
    </tr>
    {foreachelse}
      <tr>
        <td colspan="2">No records</td>
      </tr>
  {/foreach}
</table>

guestbook.tpl is the template for viewing the guestbook. It loops over the guestbook data (which was assigned from displayBook()) in a foreach loop and displays the Name, Date and Comment from each entry. The date is formatted with the date_format modifier. The Name and Comment are HTML-escaped using the escape modifier to avoid any HTML tag clashes or scripting attacks. The {cycle} function is used to cycle through background colors every two table rows.

/web/www.example.com/smarty/guestbook/templates/guestbook_form.tpl

{* Smarty *}

<form action="{$SCRIPT_NAME}?action=submit" method="post">
  <table border="1">
    {if $error ne ""}
      <tr>
      <td bgcolor="yellow" colspan="2">
      {if $error eq "name_empty"}You must supply a name.
      {elseif $error eq "comment_empty"} You must supply a comment.
      {/if}
      </td>
      </tr>
    {/if}
    <tr>
      <td>Name:</td>
      <td>
        <input type="text" name="Name"
          value="{$post.Name|escape}" size="40">
      </td>
    </tr>
    <tr>
      <td valign="top">Comment:</td>
      <td>
        <textarea name="Comment" cols="40" rows="10">{$post.Comment|escape}</textarea>
      </td>
    </tr>
    <tr>
      <td colspan="2" align="center">
        <input type="submit" value="Submit">
      </td>
    </tr>
  </table>
</form>

guestbook_form.tpl is the template for adding an entry to the guestbook. If the form is being redisplayed due to a validation error, the form values are repopulated and the appropriate error message is displayed. The form values are HTML-escaped so there are no HTML tag or quote character clashes (very important!)

With this sample application we have accomplished several key aspects of a Smarty driven application.

Hopefully this gives you an idea how to setup your applications to work with Smarty in a way that cleanly separates the application from its presentation.

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