Added syntax help to wiki form.

app/models/page.rb

@@ -1,11 +1,12 @@
 class Page < ActiveRecord::Base
 
   validates_presence_of :title, :body
+  validates_uniqueness_of :permalink
 
-  before_save :set_permalink
+  before_validation_on_create :set_permalink
 
   def set_permalink
-    if self.permalink.blank? #FIXME: or title.changed?
+    if self.permalink.blank?
       self.permalink = Page.count == 0 ? "home" : "#{title.downcase.strip.gsub(/ |\.|@/, '-')}"
     end
   end

app/views/pages/_form.html.haml

@@ -1,3 +1,18 @@
+#wiki-syntax-help{:style => "float:right"}
+  %p
+    %b Schnelle Formatierungshilfe
+    %br/
+    :plain
+      [[interner Link]]<br />
+      [externer Link](http://addresse.net)<br />
+      *kursiv*<br />
+      **Fett**<br />
+      * erster Listenpunkt<br />
+      * zweiter Listenpunkt<br />
+  %p
+    Übersicht über alle Formatierungen:
+    = link_to "Markdown Cheatsheet", "http://packetlife.net/static/cheatsheets/markdown.pdf", :target => '_blank'
+
 - form_for @page do |f|
   = f.error_messages
 

app/views/pages/all.html.haml

@@ -4,7 +4,7 @@
 
 %table
   %tr
-    %th Title
+    %th Titel
     %th zuletzt aktualisiert
   - for page in @pages
     %tr