First steps for an own wiki.

* Scaffold for Page Objekt
* Using textile for rendering html
* Easy wiki-links with [[wikipage]]

app/controllers/pages_controller.rb

@@ -0,0 +1,86 @@
+class PagesController < ApplicationController
+
+  def index
+    @page = Page.find_by_permalink "home"
+
+    if @page
+      render :action => 'show'
+    else
+      redirect_to all_pages_path
+    end
+  end
+
+  def show
+    @page = Page.find_by_permalink(params[:permalink])
+
+    if @page.nil?
+      redirect_to new_page_path(:title => params[:permalink])
+    end
+  end
+
+  # GET /pages/new
+  # GET /pages/new.xml
+  def new
+    @page = Page.new(:title => params[:title])
+
+    respond_to do |format|
+      format.html # new.html.erb
+      format.xml  { render :xml => @page }
+    end
+  end
+
+  # GET /pages/1/edit
+  def edit
+    @page = Page.find(params[:id])
+  end
+
+  # POST /pages
+  # POST /pages.xml
+  def create
+    @page = Page.new(params[:page])
+
+    respond_to do |format|
+      if @page.save
+        flash[:notice] = 'Page was successfully created.'
+        format.html { redirect_to(@page) }
+        format.xml  { render :xml => @page, :status => :created, :location => @page }
+      else
+        format.html { render :action => "new" }
+        format.xml  { render :xml => @page.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # PUT /pages/1
+  # PUT /pages/1.xml
+  def update
+    @page = Page.find(params[:id])
+
+    respond_to do |format|
+      if @page.update_attributes(params[:page])
+        flash[:notice] = 'Page was successfully updated.'
+        format.html { redirect_to(@page) }
+        format.xml  { head :ok }
+      else
+        format.html { render :action => "edit" }
+        format.xml  { render :xml => @page.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /pages/1
+  # DELETE /pages/1.xml
+  def destroy
+    @page = Page.find(params[:id])
+    @page.destroy
+
+    respond_to do |format|
+      format.html { redirect_to(pages_url) }
+      format.xml  { head :ok }
+    end
+  end
+
+  def all
+    @pages = Page.all :order => 'created_at'
+  end
+end

app/helpers/pages_helper.rb

@@ -0,0 +1,18 @@
+module PagesHelper
+
+  def wikified_body(body)
+    r = RedCloth.new(body)
+    r.gsub!(/\[\[(.*?)(\|(.*?))?\]\]/) { wiki_link($1, $3) }
+    sanitize r.to_html
+    r.to_html
+  end
+
+  def wiki_link(wiki_words, link_text = nil)
+    permalink = wiki_words.downcase.gsub(' ', '-')
+    if Page.exists?(:permalink => permalink)
+      link_to((link_text || wiki_words), wiki_page_url(permalink))
+    else
+      link_to((link_text || wiki_words), wiki_page_url(permalink), :class => "new_wiki_link")
+    end
+  end
+end

app/models/page.rb

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

app/views/layouts/_main_tabnav.html.erb

@@ -16,6 +16,11 @@
           { :name => "Aufgaben", :url => "/tasks"}
         ]
       },
+      { :name => "Wiki", :url => "/pages", :active => ["pages", "wiki"],
+        :subnav => [
+          { :name => "Alle Seiten", :url => "pages/all" }
+        ]
+      },
       { :name => "Bestellungen", :url => u.ordergroup ? "/ordering/" : "/orders",
         :active => ["orders", "ordering"],
         :subnav => [

app/views/pages/_form.html.haml

@@ -0,0 +1,15 @@
+- form_for @page do |f|
+  = f.error_messages
+
+  %p
+    %b Title
+    %br/
+    = f.text_field :title
+  %p
+    %b Inhalt
+    %br/
+    = f.text_area :body, :size => "60x30"
+  %p
+    = f.submit "Speichern"
+    |
+    = link_to "Abbrechen", :back

app/views/pages/all.html.haml

@@ -0,0 +1,12 @@
+- title "Alle Wikiseiten"
+
+%p= link_to "Neue Seite anlegen", new_page_path
+
+%table
+  %tr
+    %th Title
+    %th zuletzt aktualisiert
+  - for page in @pages
+    %tr
+      %td= link_to page.title, page
+      %td= format_date page.updated_at

app/views/pages/edit.html.haml

@@ -0,0 +1,3 @@
+- title "#{@page.title} bearbeiten"
+
+= render :partial => 'form'

app/views/pages/new.html.haml

@@ -0,0 +1,3 @@
+- title "Neue Wikiseite anlegen"
+
+= render :partial => 'form'

app/views/pages/show.html.haml

@@ -0,0 +1,7 @@
+- title @page.title
+
+= wikified_body @page.body
+
+%hr/
+%p
+  = link_to "Seite bearbeiten", edit_page_path(@page)