Improve missing template error messages a little bit.

actionpack/lib/action_view/base.rb

@@ -6,15 +6,20 @@ class ActionViewError < StandardError #:nodoc:
   end
 
   class MissingTemplate < ActionViewError #:nodoc:
-    attr_reader :path, :action_name
+    attr_reader :path
 
-    def initialize(paths, path, template_format = nil)
+    def initialize(paths, path, details, partial)
       @path = path
-      @action_name = path.split("/").last.split(".")[0...-1].join(".")
-      full_template_path = path.include?('.') ? path : "#{path}.erb"
       display_paths = paths.compact.join(":")
-      template_type = (path =~ /layouts/i) ? 'layout' : 'template'
-      super("Missing #{template_type} #{full_template_path} in view path #{display_paths}")
+      template_type = if partial
+        "partial"
+      elsif path =~ /layouts/i
+        'layout'
+      else
+        'template'
+      end
+
+      super("Missing #{template_type} #{path} with #{details.inspect} in view path #{display_paths}")
     end
   end
 

actionpack/lib/action_view/paths.rb

@@ -45,7 +45,7 @@ def find(path, details = {}, prefix = nil, partial = false)
         end
       end
 
-      raise ActionView::MissingTemplate.new(self, "#{prefix}/#{path} - #{details.inspect} - partial: #{!!partial}")
+      raise ActionView::MissingTemplate.new(self, "#{prefix}/#{path}", details, partial)
     end
 
     def exists?(path, extension = nil, prefix = nil, partial = false)

actionpack/test/controller/mime_responds_test.rb

@@ -499,7 +499,7 @@ def using_resource_with_responder
 
   def using_resource_with_action
     respond_with(resource, :action => :foo) do |format|
-      format.html { raise ActionView::MissingTemplate.new([], "method") }
+      format.html { raise ActionView::MissingTemplate.new([], "foo/bar", {}, false) }
     end
   end