Can't mass-assign protected attributes in Rails 4 -

i can't understand what's wrong code (rails 4):

parameters post:

{:name => "name"}

new action:

m=menu.new(params.permit(:name))

last line of code generates "can't mass-assign protected attributes menu: name"

the standard way use strong_parameters in rails 4 create private method in controller defines permitted params. so:

def new   @m = menu.new(menu_params) end  private  def menu_params   params.require(:menu).permit(:name, :etc, :etc) end

then, can remove attr_accessible line model.

see:

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