Templates from other sources
You can retrieve templates using whatever possible source you can
access with PHP: databases, sockets, LDAP, and so on. You do this
by writing resource plugin functions and registering them with
Smarty.
See resource plugins
section for more information on the functions you are supposed
to provide.
Note: Note that you cannot override the built-in
file resource, but you can provide a resource
that fetches templates from the file system in some other way by
registering under another resource name.
Example 15-9. using custom resources
// from PHP script
// put these function somewhere in your application
function db_get_template ($tpl_name, &$tpl_source, &$smarty_obj)
{
// do database call here to fetch your template,
// populating $tpl_source
$sql = new SQL;
$sql->query("select tpl_source
from my_table
where tpl_name='$tpl_name'");
if ($sql->num_rows) {
$tpl_source = $sql->record['tpl_source'];
return true;
} else {
return false;
}
}
function db_get_timestamp($tpl_name, &$tpl_timestamp, &$smarty_obj)
{
// do database call here to populate $tpl_timestamp.
$sql = new SQL;
$sql->query("select tpl_timestamp
from my_table
where tpl_name='$tpl_name'");
if ($sql->num_rows) {
$tpl_timestamp = $sql->record['tpl_timestamp'];
return true;
} else {
return false;
}
}
function db_get_secure($tpl_name, &$smarty_obj)
{
// assume all templates are secure
return true;
}
function db_get_trusted($tpl_name, &$smarty_obj)
{
// not used for templates
}
// register the resource name "db"
$smarty->register_resource("db", array("db_get_template",
"db_get_timestamp",
"db_get_secure",
"db_get_trusted"));
// using resource from php script
$smarty->display("db:index.tpl");
{* using resource from within Smarty template *}
{include file="db:/extras/navigation.tpl"}
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