* Add "last" parameter to hook function. Very basic ordering, and hopefully

[ikiwiki.git] / doc / plugins / write.mdwn

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 651023701f12da4971227373517b937899eb70aa..f808d2e1e089ac412cbabbc2a379e465ca19cbf4 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -36,6 +36,10 @@ before begining to render pages. This parameter should be set to true if
 the hook modifies data in `%links`. Note that doing so will make the hook
 be run twice per page build, so avoid doing it for expensive hooks.
 
+An optional "last" parameter, if set to a true value, makes the hook run
+after all other hooks of its type. Useful if the hook depends on some other
+hook being run first.
+
 ## Types of hooks
 
 In roughly the order they are called.
@@ -119,13 +123,13 @@ return the htmlized content.
 
        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
+[[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 `HTML::Template` object that
-is the template that will be used to generate the page. The function can
-manipulate that template object.
+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.
@@ -177,7 +181,7 @@ terminate the program.
 
 ### auth
 
-       hook(type => "cgi", id => "foo", call => \&auth);
+       hook(type => "auth", id => "foo", call => \&auth);
 
 This hook can be used to implement a different authentication method than
 the standard web form. When a user needs to be authenticated, each registered
@@ -188,6 +192,28 @@ object's "name" parameter to the authenticated user's name. Note that
 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.
 
+### formbuilder
+
+       hook(type => "formbuilder_setup", id => "foo", call => \&formbuilder_setup);
+       hook(type => "formbuilder", id => "foo", call => \&formbuilder);
+
+These hooks allow tapping into the parts of ikiwiki that use [[cpan
+CGI::FormBuilder]] to generate web forms. These hooks are passed named
+parameters: `cgi`, `session`, and `form`. These are, respectively, the
+`CGI` object, the user's `CGI::Session`, and a `CGI::FormBuilder`.
+
+Each time a form is set up, the formbuilder_setup hook is called.
+Typically the formbuilder_setup hook will check the form's title, and if
+it's a form that it needs to modify, will call various methods to
+add/remove/change fields, tweak the validation code for the fields, etc. It
+will not validate or display the form.
+
+Form validation and display can be overridden by the formbuilder hook.
+By default, ikiwiki will do a basic validation and display of the form,
+but if this hook is registered, it will stop that and let the hook take
+over. This hook is passed an additional named parameter: `buttons` is an
+array of the submit buttons for the form.
+
 ### savestate
 
        hook(type => "savestate", id => "foo", call => \&savestate);
@@ -259,8 +285,8 @@ appear on the wiki page, rather than calling error().
 
 #### `template($;@)`
 
-Creates and returns a HTML::Template object. The first parameter is the
-name of the file in the template directory. The optional remaining
+Creates and returns a [[cpan HTML::Template]] object. The first parameter
+is the name of the file in the template directory. The optional remaining
 parameters are passed to HTML::Template->new.
 
 #### `htmlpage($)`