add ability to change footer and sidebar of page

lib/gollum/frontend/app.rb

@@ -58,8 +58,11 @@ module Precious
       wiki = Gollum::Wiki.new(settings.gollum_path)
       page = wiki.page(params[:splat].first)
       name = params[:rename] || page.name
-      update_wiki_page(wiki, page, params[:content], commit_message, 
-        name, params[:format])
+      msg  = commit_message
+      update_wiki_page(wiki, page, params[:content], msg, name, 
+        params[:format])
+      update_wiki_page(wiki, page.footer,  params[:footer],  msg) if params[:footer]
+      update_wiki_page(wiki, page.sidebar, params[:sidebar], msg) if params[:sidebar]
 
       redirect "/#{CGI.escape(Gollum::Page.cname(name))}"
     end
@@ -160,8 +163,7 @@ module Precious
     end
 
     def update_wiki_page(wiki, page, content, commit_message, name = nil, format = nil)
-      return if !page
-      return if page.raw_data == content
+      return if !page || !content || page.raw_data == content
       name ||= page.name
       format = (format || page.format).to_sym
       wiki.update_page(page, name, format, content, commit_message)

lib/gollum/wiki.rb

@@ -538,18 +538,19 @@ module Gollum
 
     def commit_index(options = {})
       normalize_commit(options)
-      options[:parent] ||= [@repo.commit('master')]
-      options[:parent].compact!
+      parents = [options[:parent] || @repo.commit('master')]
+      parents.flatten!
+      parents.compact!
       index = self.repo.index
       if tree   = options[:tree]
         index.read_tree(tree)
-      elsif parent = options[:parent][0]
+      elsif parent = parents[0]
         index.read_tree(parent.tree.id)
       end
       yield index if block_given?
 
       actor = Grit::Actor.new(options[:name], options[:email])
-      index.commit(options[:message], options[:parent], actor)
+      index.commit(options[:message], parents, actor)
     end
 
     def full_reverse_diff_for(page, sha1, sha2 = nil)

test/test_app.rb

@@ -28,6 +28,32 @@ context "Frontend" do
     assert_not_equal page_1.version.sha, page_2.version.sha
   end
 
+  test "edits page footer and sidebar" do
+    page_1 = @wiki.page('Bilbo Baggins')
+    foot_1 = page_1.footer
+    side_1 = page_1.sidebar
+
+    post "/edit/#{Gollum::Page.cname page_1.name}",
+      :footer => 'footer', :sidebar => 'sidebar',
+      :format => page_1.format, :message => 'def'
+    follow_redirect!
+    assert last_response.ok?
+
+    @wiki.clear_cache
+    page_2 = @wiki.page(page_1.name)
+    foot_2 = page_2.footer
+    side_2 = page_2.sidebar
+    assert_equal page_1.raw_data, page_2.raw_data
+
+    assert_equal 'footer', foot_2.raw_data
+    assert_equal 'def',    foot_2.version.message
+    assert_not_equal foot_1.version.sha, foot_2.version.sha
+
+    assert_equal 'sidebar', side_2.raw_data
+    assert_equal 'def',     side_2.version.message
+    assert_not_equal side_1.version.sha, side_2.version.sha
+  end
+
   test "renames page" do
     page_1 = @wiki.page('Bilbo Baggins')
     post "/edit/#{Gollum::Page.cname page_1.name}", :content => 'abc',