[TYPO3] Extending Existing Extensions

[Sebastian Fuchs]

Hi Marco,
as far as i know there are two typo3 concepts of extending other 
extensions. the two buzz words are XCLASSes and Hooks.
there is an article by robert lemke about hooks:
http://typo3.org/development/articles/how-to-use-existing-hooks/

these hooks have to be implemented in the extension themself. i dont 
know tt_products at all so i cant tell you if there are any (probalby 
there is a different way of doing it with tt_products).

so to override one function you could use XCLASSes.
for index_search this would look like this:

in ext_localconf.php of your extension you register your xclass:

$TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/indexed_search/pi/class.tx_indexedsearch.php'] 
= t3lib_extMgm::extPath($_EXTKEY).'class.ux_tx_indexedsearch.php';

your xclass would than exend the original class:

class ux_tx_indexedsearch extends tx_indexedsearch {...}

and overrides the desired function.

hope it helps,
sebastian




Marco Fang wrote:
> Dear all,
> 
> I would like to utilize some functions, for example, extending the 
> product page of tt_products to put comment or downloads on it.
> 
> Is that possible to use some kind of setting to make it successful or I 
> have to write or find another extension to utilize it?
> 
> Your comments are appreciated.
> 
> 
> Marco Fang