fixes #1579

app/controllers/wiki_pages_controller.rb

@@ -69,8 +69,6 @@ class WikiPagesController < ApplicationController
     @wiki_page = WikiPage.find_by_title(params[:title])
     if @wiki_page
       redirect_to wiki_page_path(@wiki_page)
-    else
-      redirect_to new_wiki_page_path(:wiki_page => {:title => params[:title]})
     end
   end
 

app/models/wiki_page.rb

@@ -6,7 +6,7 @@ class WikiPage < ActiveRecord::Base
   belongs_to :creator, :class_name => "User"
   belongs_to :updater, :class_name => "User"
   validates_uniqueness_of :title, :case_sensitive => false
-  validates_presence_of :title
+  validates_presence_of :title, :body
   validate :validate_locker_is_janitor
   attr_accessible :title, :body, :is_locked
   has_one :tag, :foreign_key => "name", :primary_key => "title"

app/views/wiki_pages/show_or_new.html.erb

@@ -0,0 +1,18 @@
+<div id="c-wiki-pages">
+  <div id="a-show">
+    <%= render "sidebar" %>
+
+    <section id="content">
+      <h1 id="wiki-page-title"><%= params[:title] %></h1>
+      <div id="wiki-page-body" class="prose">
+        <p>This wiki page does not exist. <%= link_to "Create new wiki page", new_wiki_page_path(:wiki_page => {:title => params[:title]}) %>.</p>
+      </div>
+    </section>
+  </div>
+</div>
+
+<% content_for(:page_title) do %>
+  Wiki - <%= params[:title] %> - <%= Danbooru.config.app_name %>
+<% end %>
+
+<%= render "secondary_links" %>