Fix 404 for missing package

app/controllers/packages_controller.rb

@@ -19,16 +19,17 @@ class PackagesController < ApplicationController
     # TODO: Get only screenshots visible to the user (admin or owner or approved)
     @package = Package.find_by(name: params[:name])
 
-    unless @package
+    if @package.nil?
       @packagename = params[:name]
-      render 'notfound'
+      render 'notfound', status: 404
-    end
+    else
 
-    # The first page of screenshots (if there are multiple at all) shows the
+      # The first page of screenshots (if there are multiple at all) shows the
-    # first image twice as large. So the first page contains 5 images while
+      # first image twice as large. So the first page contains 5 images while
-    # the second and further page contain 6 images.
+      # the second and further page contain 6 images.
-    @page = params[:page]
+      @page = params[:page]
-    @screenshots = screenshots_visible_to_user(@package).paginate(page: @page, per_page: 6)
+      @screenshots = screenshots_visible_to_user(@package).paginate(page: @page, per_page: 6)
+    end
   end
   
   # Show upload form for new images

app/views/packages/notfound.slim

@@ -4,7 +4,7 @@ h1
 
 p
   ' I'm afraid but there is no package
-  em =@package_name
+  em =>@packagename
   ' in the database. It may be that a package that is available
   ' in your favorite Linux distribution is not listed here.
   ' If you think this is an error then feel free to leave