Split apache404 into an independent plugin

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index abcabbdc39e43871af4b491b47b1540fda99a34f..99eea3d1696b3240647b439edae4d8768ddf1033 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -19,7 +19,7 @@ that can be fleshed out to make a useful plugin.
 `IkiWiki::Plugin::pagecount` is another simple example. All perl plugins
 should `use IkiWiki` to import the ikiwiki plugin interface. It's a good
 idea to include the version number of the plugin interface that your plugin
-expects: `use IkiWiki 2.00`.
+expects: `use IkiWiki 3.00`.
 
 An external plugin is an executable program. It can be written in any
 language. Its interface to ikiwiki is via XML RPC, which it reads from
@@ -55,8 +55,8 @@ plugin, and a "call" parameter, which tells what function to call for the
 hook.
 
 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.
+after all other hooks of its type, and an optional "first" parameter makes
+it run first. Useful if the hook depends on some other hook being run first.
 
 ## Types of hooks
 
@@ -303,7 +303,7 @@ can check if the session object has a "name" parameter set.
 
 ### canedit
 
-       hook(type => "canedit", id => "foo", call => \&pagelocked);
+       hook(type => "canedit", id => "foo", call => \&canedit);
 
 This hook can be used to implement arbitrary access methods to control when
 a page can be edited using the web interface (commits from revision control
@@ -321,6 +321,26 @@ This hook should avoid directly redirecting the user to a signin page,
 since it's sometimes used to test to see which pages in a set of pages a
 user can edit.
 
+### checkcontent
+       
+       hook(type => "checkcontent", id => "foo", call => \&checkcontent);
+
+This hook is called to check the content a user has entered on a page,
+before it is saved, and decide if it should be allowed.
+
+It is passed named parameters: `content`, `page`, `cgi`, and `session`. If
+the content the user has entered is a comment, it may also be passed some
+additional parameters: `author`, `url`, and `subject`. The `subject`
+parameter may also be filled with the user's comment about the change.
+
+Note: When the user edits an existing wiki page, the passed `content` will
+include only the lines that they added to the page, or modified.
+
+The hook should return `undef` on success. If the content is disallowed, it
+should return a message stating what the problem is, or a function
+that can be run to perform whatever action is necessary to allow the user
+to post the content.
+
 ### editcontent
 
        hook(type => "editcontent", id => "foo", call => \&editcontent);
@@ -431,7 +451,7 @@ describes the plugin as a whole. For example:
 
 To import the ikiwiki plugin interface:
 
-       use IkiWiki '2.00';
+       use IkiWiki '3.00';
 
 This will import several variables and functions into your plugin's
 namespace. These variables and functions are the ones most plugins need,
@@ -486,7 +506,7 @@ use the following hashes, using a page name as the key:
   destination file.
 * `%pagesources` contains the name of the source file for each page.
 
-Also, the %IkiWiki::version variable contains the version number for the
+Also, the `%IkiWiki::version` variable contains the version number for the
 ikiwiki program.
 
 ### Library functions
@@ -696,11 +716,15 @@ This can be called when creating a new page, to determine what filename
 to save the page to. It's passed a page name, and its type, and returns
 the name of the file to create, relative to the srcdir.
 
-#### `targetpage($$)`
+#### `targetpage($$;$)`
 
 Passed a page and an extension, returns the filename that page will be
 rendered to.
 
+Optionally, a third parameter can be passed, to specify the preferred
+filename of the page. For example, `targetpage("foo", "rss", "feed")`
+will yield something like `foo/feed.rss`.
+
 ## Miscellaneous
 
 ### Internal use pages