On Mon, 06 May 2013 11:59:49 -0700, Jim Hu jimhu@tamu.edu wrote:

I'm rewriting some of our tag extensions to be more up to date in coding practice. In the docs for $wgTitle, it suggests using $parser->getTitle() to replace $wgTitle in tag extensions. What's the difference between that and using $frame->getTitle()?

I'm trying to understand what I should be using $frame for.

Thanks!

There are multiple levels of frame. $frame->getTitle() can potentially refer to say the title of a template being transcluded. While $parser->getTitle() refers to the title of the actual page being parsed.

For example if we have: ## [[Template:Foo]] {{#test:...}}

## [[Bar]] {{Foo}}

And you parse [[Bar]]. Then $parser->getTitle() should always refer to [[Bar]]. While for the #test implementation $frame->getTitle() should iirc refer to the #test parser function somehow (don't remember the specifics) and $frame->parent->getTitle() should refer to [[Template:Foo]]. And $frame->parent->parent->getTitle() finally being [[Bar]].

((Ok there are some situations like i18n messages where $parser->getTitle() may not be the actual page being parsed but the page it's being parsed to be displayed on))