Handle duplicate page error in frontend. Closes #10.

HISTORY.md

@@ -6,6 +6,7 @@
     and have bugs that may allow non-whitelisted HTML to sneak
     through.
   * Introduce Ruby 1.9 compatibility fixes.
+  * Handle duplicate page errors in frontend.
 
 # 1.0.1 / 2010-08-12
 

lib/gollum/frontend/app.rb

@@ -68,8 +68,13 @@ module Precious
 
       format = params[:format].intern
 
-      wiki.write_page(name, format, params[:content], commit_message)
-      redirect "/#{name}"
+      begin
+        wiki.write_page(name, format, params[:content], commit_message)
+        redirect "/#{name}"
+      rescue Gollum::DuplicatePageError => e
+        @message = "Duplicate page: #{e.message}"
+        mustache :error
+      end
     end
 
     post '/preview' do

lib/gollum/frontend/templates/error.mustache

@@ -0,0 +1,11 @@
+<div class="guide">
+  <div class="main">
+    <div class="actions">
+      <a href="/">Home</a>
+    </div>
+    <h1>Error</h1>
+    <div class="error">
+      {{message}}
+    </div>
+  </div>
+</div>

lib/gollum/frontend/views/error.rb

@@ -0,0 +1,7 @@
+module Precious
+  module Views
+    class Error < Layout
+      attr_reader :message
+    end
+  end
+end