AWDWR Chpt6: Webrick Get...200... then ...500

Hi, Rails produces to diff Gets on the Webrick:
AWDWR Chpt 6 strange results:

First browser call to /Admin shows correct form; - And WEBrick reports:

“Get /admin HTTP/1.1” 200 485 - -> /admin

Subsequent browser calls to /Admin show:
NoMethodError in AdminController#index
undefined method `each’ for #Mysql:0x37aba80

  • And WEBrick reports:

“Get /admin HTTP/1.1” 500 10767 - -> /admin

First browser call to /Admin/new shows correct form for editing; - And
WEBrick reports:

“Get /admin/new HTTP/1.1” 200 10767 - -> /admin/new

Subsequent browswer calls to /Admin/new show:
NoMethodError in AdminController#new
undefined method `each’ for #Mysql:0x376d7e8
RAILS_ROOT: ./script/…/config/…

  • And WEBrick reports:

“Get /admin/new HTTP/1.1” 500 9798 - -> /admin/new

So the first calls produce a “Get…200…” and the right browser
results.
Subsequent calls produce a “Get…500…” and “NoMethodError”

Thanks for your help,
Joe

My AdminController class:

def index
list
render :action => ‘list’
end

def new
@product = Product.new
end

My routes.rb:
map.connect ‘:controller/service.wsdl’, :action => ‘wsdl’
map.connect ‘:controller/:action/:id’

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