make checkcontent compatible with hooks that need the full content

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index a1e14cb948989fe82f14eb54b8267aeec7975d23..7ba01ae53f1d796bf31677183492a82d485849a0 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -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 +321,21 @@ 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.
 
+### cansave
+
+       hook(type => "cansave", id => "foo", call => \&cansave);
+
+This hook can be used to implement arbitrary access methods to control
+when a page being edited can be saved using the web interface (commits
+from revision control bypass it).
+
+When a page is about to be saved, each registered cansave hook is
+called in turn, and passed the page name, the edited content, a CGI
+object and a session object.
+
+The return value of a cansave hook is interpreted the same as for the
+canedit hook.
+
 ### canremove
 
        hook(type => "canremove", id => "foo", call => \&canremove);
@@ -335,7 +350,32 @@ bypass it). It works exactly like the `canedit` hook.
 
 This hook can be used to implement arbitrary access methods to control when
 a page can be renamed using the web interface (commits from revision control
-bypass it). It works exactly like the `canedit` hook.
+bypass it). It works exactly like the `canedit` and `canremove` hook,
+but is passed:
+* a CGI object
+* a session object
+* the named parameters `src`, `srcfile`, `dest` and `destfile`.
+
+### 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, this hook is also
+passed a `diff` named parameter, which 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
 
@@ -536,6 +576,10 @@ the id can be controled by the user.
 Logs a debugging message. These are supressed unless verbose mode is turned
 on.
 
+#### `warning($)`
+
+Logs a warning message.
+
 #### `error($;$)`
 
 Aborts with an error message. If the second parameter is passed, it is a