I made an extension which uses the header_link field to set up links. Problem is that with external links I want the <a> tag with an extra class, which is ok since there is a field for that in the backend. Problem is, I dont know where this value is stored. Anyone can help me, please?
Thanks!
After re-reading your question, I think the answer is simpler then I initially thought. Standard link fields are a string stored to the database like that:
www.linktarget.com - - - customlinkclass
Which pretty much explains itself. You can access the values seperately with t3lib_div::trimExplode() in your extensions php code, then create the link with tslib_cObj::typoLink
However, I don't know exactly what you mean with header_link field.