Smarty

[maka]

Hi,
Supose I have a traditional situation of a template file main.tpl that include
header.tpl, body.tpl and footer.tpl

The title html tag is defined in header.tpl, but I want to change it to a value comming from inside body.tpl.

in header.tpl I did: <title>{$title|default:"untitled"}</title>

and in body.tpl I did: {*title=Main Page*} for example.

To complete I create a pre filter that pregmatch the comment from body.tpl and assign it to $smarty object that is passed by reference as the second parameter at my filter. Every thing works fine, excepty for the problem that seens that smarty call each template with a diferent $smarty object, not with the same. The vars that I assign exist just for the current tpl.
Is it a bug or a feature??
I think it's a bug, since if I define a var in the main.php ou inside each template, the var is visible in all the next template.

there's a way to do this or something similar?

[messju]

a prefilter is called at compile-time, not at display-time. the $smarty-object passed by reference is actually an instance of Smarty_Compiler and not the instance of (your subclass of)Smarty. the Smarty_Compiler-object is a different one for each template and the prefilter is called only at the first time of display() of your template so it is not a good place to assign variables.

[maka]

Thank's, I didn't know that!

just two question:

What interesting thing could I do whith this $smarty inside a filter?

there's a way to do this or something similar?

[messju]

you can call all methods of $smarty because Smarty_Compiler is a subclass of Smarty. i don't know if that is "a interesting thing".

to get access to the "real" $smarty we can dirty our hands a little:

before you call display() which triggers compilation:

[maka]

nice trick, I test it here and works only while the cache has not expired.
The solution would be insert code in the compiled file.

Would it be possible if I use a pre_filter with post_filter too? or perhaps an output_filter?

will try this tonight