hook(type => "pagetemplate", id => "foo", call => \&pagetemplate);
-[[Templates]] are filled out for many different things in ikiwiki, like
-generating a page, or part of a blog page, or an rss feed, or a cgi. This
-hook allows modifying those templates. The function is passed named
-parameters. The "page" and "destpage" parameters are the same as for a
-preprocess hook. The "template" parameter is a [[cpan HTML::Template]]
-object that is the template that will be used to generate the page. The
-function can manipulate that template object.
+[[Templates|wikitemplate]] are filled out for many different things in
+ikiwiki, like generating a page, or part of a blog page, or an rss feed, or
+a cgi. This hook allows modifying the variables available on those
+templates. The function is passed named parameters. The "page" and
+"destpage" parameters are the same as for a preprocess hook. The "template"
+parameter is a [[cpan HTML::Template]] object that is the template that
+will be used to generate the page. The function can manipulate that
+template object.
The most common thing to do is probably to call `$template->param()` to add
a new custom parameter to the template.
+### templatefile
+
+ hook(type => "templatefile", id => "foo", call => \&templatefile);
+
+This hook allows plugins to change the [[template|wikitemplate]] that is
+used for a page in the wiki. The hook is passed a "page" parameter, and
+should return the name of the template file to use, or undef if it doesn't
+want to change the default ("page.tmpl"). Template files are looked for in
+/usr/share/ikiwiki/templates by default.
+
### sanitize
hook(type => "sanitize", id => "foo", call => \&sanitize);
if the name is set to the name of a user who is not registered,
a basic registration of the user will be automatically performed.
+### sessioncgi
+
+ hook(type => "sessioncgi", id => "foo", call => \&sessioncgi);
+
+Unlike the cgi hook, which is run as soon as possible, the sessioncgi hook
+is only run once a session object is available. It is passed both a CGI
+object and a session object. To check if the user is in fact signed in, you
+can check if the session object has a "name" parameter set.
+
### canedit
hook(type => "canedit", id => "foo", call => \&pagelocked);
* forcesubpage - set to force a link to a subpage
* linktext - set to force the link text to something
* anchor - set to make the link include an anchor
+* rel - set to add a rel attribute to the link.
#### `readfile($;$)`
#### `urlto($$)`
-Construct a relative url to the first parameter from the second.
+Construct a relative url to the first parameter from the page named by the
+second. The first parameter can be either a page name, or some other
+destination file, as registered by `will_render`.
#### `targetpage($$)`