custom rails3 scaffold template by your self

i cost 2 day to find this out,hope help someone .
the rails3 provide a way to custom the scaffold code
when i use rails g scaffold_controller admin/Product name:string to separate the backend code from frontend.
the crud code didn't woks well due to the generate code has some bug,it's only suit for
rails g scaffold Product name:string this Product is on the root level.
so i need custom the scaffold tempate
bellow is the detail:
put the attachment under lib folder and untar them
this code i have tested both suit above situation

-- lib
|   |-- tasks
|   |-- templates
|   |   |-- erb
|   |   |   `-- scaffold
|   |   |       |-- edit.html.erb
|   |   |       |-- _form.html.erb
|   |   |       |-- index.html.erb
|   |   |       |-- new.html.erb
|   |   |       `-- show.html.erb
|   |   `-- rails
|   |       `-- scaffold_controller
|   |           `-- controller.rb

i have hack the default template code suit for my situation,also i think this is a common way,may be rails3 need patch it as default 

https://files.cnblogs.com/lexus/templates.zip