龚乐鑫修改意见4：去除render action 之前调用对应的 action 方法。

app/controllers/courses_controller.rb

@@ -86,7 +86,6 @@ class CoursesController < ApplicationController
     else
       respond_to do |format|
         format.html {
-          settings
           render :action => 'settings'
         }
         format.api  { render_validation_errors(@course) }

app/controllers/settings_controller.rb

@@ -24,7 +24,6 @@ class SettingsController < ApplicationController
   before_filter :require_admin
 
   def index
-    edit
     render :action => 'edit'
   end
 

app/controllers/trackers_controller.rb

@@ -57,7 +57,6 @@ class TrackersController < ApplicationController
       redirect_to trackers_path
       return
     end
-    new
     render :action => 'new'
   end
 

app/controllers/web_footer_companies_controller.rb

@@ -20,7 +20,6 @@ class WebFooterCompaniesController < ApplicationController
       redirect_to web_footer_companies_path
     else
       flash[:error] = "#{l :web_footer_company_create_fail}: #{@company.errors.full_messages[0]}"
-      new
       render :action => 'new'
     end
   end
@@ -42,7 +41,6 @@ class WebFooterCompaniesController < ApplicationController
       redirect_to web_footer_companies_path
     else
       flash[:error] = "#{l :web_footer_company_update_fail}: #{@company.errors.full_messages[0]}"
-      edit
       render :action => 'edit'
     end
   end

app/controllers/wiki_controller.rb

@@ -68,7 +68,6 @@ class WikiController < ApplicationController
   def show
     if @page.new_record?
       if User.current.allowed_to?(:edit_wiki_pages, @project) && editable? && !api_request?
-        edit
         render :action => 'edit'
       else
         render_404