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Chris McDevitt

2006-Jan-11 00:03 UTC

[Rails] Help -- NoMethodError in

Hi,

I am just learing Rails and I am going through the Agile Web Development 
with Rails book.  I am receiving:

NoMethodError in Store#add_to_cart
undefined method `add_product'' for #<StoreController:0x3764d80>
RAILS_ROOT: ./script/../config/..

Application Trace | Framework Trace | Full Trace
#{RAILS_ROOT}/app/controllers/store_controller.rb:12:in `add_to_cart''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`send''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`perform_action_without_filters''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
`perform_action_without_benchmark''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`measure''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
`perform_action''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`send''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`process_without_session_management_support''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
`process''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in 
`dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in 
`handle_dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in 
`service''
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in `start_thread''
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start_thread''
c:/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each''
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in 
`dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require__''
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require''
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require__''
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require''
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
./script/server:3
#{RAILS_ROOT}/app/controllers/store_controller.rb:12:in `add_to_cart''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`send''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
`perform_action_without_filters''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
`perform_action_without_benchmark''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`measure''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
`perform_action''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`send''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
`process_without_session_management_support''
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
`process''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in 
`dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in 
`handle_dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in 
`service''
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in `start_thread''
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start_thread''
c:/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each''
c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in 
`dispatch''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require__''
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require''
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require__''
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in 
`require''
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
`require''
./script/server:3
Request
Parameters: {"id"=>"2"}

Show session dump

---
:cart: !ruby/object:Cart
  items: []
  total_price: 0.0
flash: !ruby/hash:ActionController::Flash::FlashHash {}
Response
Headers: {"cookie"=>[],
"Cache-Control"=>"no-cache"}

-- 
Posted via http://www.ruby-forum.com/.

Douglas Livingstone

2006-Jan-11 00:19 UTC

head link

[Rails] Help -- NoMethodError in

2006/1/11, Chris McDevitt <jcmcdevitt@yahoo.com>:> Hi,
>
> I am just learing Rails and I am going through the Agile Web Development
> with Rails book.  I am receiving:
>
> NoMethodError in Store#add_to_cart
> undefined method `add_product'' for
#<StoreController:0x3764d80>
> RAILS_ROOT: ./script/../config/..
>
Doeas your StoreController have an add_product method?

If not, you probably need to add it.

If you think you do, please post the relevant code and lets have a
look at it. Also, what does the code in the Store#add_to_cart method
look like?

Douglas

M Daggett

2006-Jan-11 00:21 UTC

head link

[Rails] Help -- NoMethodError in

Hi Chris,
This means that your store_controller.rb file is missing a function

def add_to_cart
   product = Product.find(params[:id])
   ....
   ....
end

you might have misspelled the name?


On 1/10/06, Chris McDevitt <jcmcdevitt@yahoo.com>
wrote:> Hi,
>
> I am just learing Rails and I am going through the Agile Web Development
> with Rails book.  I am receiving:
>
> NoMethodError in Store#add_to_cart
> undefined method `add_product'' for
#<StoreController:0x3764d80>
> RAILS_ROOT: ./script/../config/..
>
> Application Trace | Framework Trace | Full Trace
> #{RAILS_ROOT}/app/controllers/store_controller.rb:12:in
`add_to_cart''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
> `send''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
> `perform_action_without_filters''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
> `perform_action_without_benchmark''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `perform_action_without_rescue''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `measure''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `perform_action_without_rescue''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
> `perform_action''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
> `send''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
> `process_without_session_management_support''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
> `process''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in
> `dispatch''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in
> `handle_dispatch''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in
> `service''
> c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
> c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in `start_thread''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start_thread''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in
> `dispatch''
>
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require__''
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require''
>
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
> `require''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require__''
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require''
>
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
> `require''
> ./script/server:3
> #{RAILS_ROOT}/app/controllers/store_controller.rb:12:in
`add_to_cart''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
> `send''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
> `perform_action_without_filters''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/filters.rb:332:in
> `perform_action_without_benchmark''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `perform_action_without_rescue''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `measure''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
> `perform_action_without_rescue''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/rescue.rb:82:in
> `perform_action''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
> `send''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:369:in
> `process_without_session_management_support''
>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/session_management.rb:116:in
> `process''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/dispatcher.rb:38:in
> `dispatch''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in
> `handle_dispatch''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:83:in
> `service''
> c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
> c:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:155:in `start_thread''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start_thread''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
> c:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:69:in
> `dispatch''
>
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/servers/webrick.rb:59
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require__''
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require''
>
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
> `require''
> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/commands/server.rb:28
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require__''
> c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
> `require''
>
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
> `require''
> ./script/server:3
> Request
> Parameters: {"id"=>"2"}
>
> Show session dump
>
> ---
> :cart: !ruby/object:Cart
>   items: []
>   total_price: 0.0
> flash: !ruby/hash:ActionController::Flash::FlashHash {}
> Response
> Headers: {"cookie"=>[],
"Cache-Control"=>"no-cache"}
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

--
--------------------------------------------------------------------
I am Mark Daggett and I approve this message.

Chris McDevitt

2006-Jan-11 00:34 UTC

head link

[Rails] Re: Help -- NoMethodError in

In theory, the add_product() is located in the model cart...

Here is my store_controler:

class StoreController < ApplicationController

	  def index
		 @products = Product.salable_items

	end

	def add_to_cart

		product = Product.find(params[:id])
		@cart = find_cart
		@cart = add_product(product)
		redirect_to(:action => ''display_cart'')
	end

	def display_cart
		@cart = find_cart
		@items = @cart.items
	end


	private
	def find_cart
		# Conditional Assignment Operator
		# In hash session it looks for key work "cart"
		# If found, it returns the current cart
		# If not found a new cart is created and stored in the session hash
		session[:cart] ||= Cart.new
	end




end

Teh missing function is located in \app\model\cart.rb:

class Cart
	attr_reader :items
	attr_reader :total_price
		def initialize
			@items = []
			@total_price = 0.0
		end
		def add_product(product)
		@items << LineItem.for_product(product)
		@total_price += product.price
		end
end

And....
application.rb
# Filters added to this controller will be run for all controllers in 
the application.
# Likewise, all the methods added will be available for all controllers.
class ApplicationController < ActionController::Base

model :Cart
model :Line_item
end







M Daggett wrote:> Hi Chris,
> This means that your store_controller.rb file is missing a function
> 
> def add_to_cart
>    product = Product.find(params[:id])
>    ....
>    ....
> end
> 
> you might have misspelled the name?
> 
> 
> On 1/10/06, Chris McDevitt <jcmcdevitt@yahoo.com> wrote:
>> #{RAILS_ROOT}/app/controllers/store_controller.rb:12:in
`add_to_cart''
>>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/benchmarking.rb:69:in
>> `dispatch''
>> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each''
>>
c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.2.5/lib/active_support/dependencies.rb:214:in
>>
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.11.2/lib/action_controller/base.rb:853:in
>> `perform_action_without_rescue''
>> c:/ruby/lib/ruby/gems/1.8/gems/rails-1.0.0/lib/webrick_server.rb:117:in
>> c:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start''
>> `require''
>>
>> --
>> Posted via http://www.ruby-forum.com/.
>> _______________________________________________
>> Rails mailing list
>> Rails@lists.rubyonrails.org
>> http://lists.rubyonrails.org/mailman/listinfo/rails
>>
> 
> 
> --

-- 
Posted via http://www.ruby-forum.com/.

Chris McDevitt

2006-Jan-11 01:36 UTC

head link

[Rails] Re: Help -- NoMethodError in

Douglas Livingstone wrote:> 2006/1/11, Chris McDevitt <jcmcdevitt@yahoo.com>:
>> Hi,
>>
>> I am just learing Rails and I am going through the Agile Web
Development
>> with Rails book.  I am receiving:
> Douglas
Any Sugestions?

-- 
Posted via http://www.ruby-forum.com/.

Tom Fakes

2006-Jan-11 01:39 UTC

head link

[Rails] Re: Help -- NoMethodError in

This line:

	@cart = add_product(product)

Should be

	@cart.add_product(product)

	def add_to_cart
		product = Product.find(params[:id])
		@cart = find_cart
		@cart.add_product(product)
		redirect_to(:action => ''display_cart'')
	end


-----Original Message-----
From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Chris McDevitt
Sent: Tuesday, January 10, 2006 5:36 PM
To: rails@lists.rubyonrails.org
Subject: [Rails] Re: Help -- NoMethodError in

Douglas Livingstone wrote:> 2006/1/11, Chris McDevitt <jcmcdevitt@yahoo.com>:
>> Hi,
>>
>> I am just learing Rails and I am going through the Agile Web
Development
>> with Rails book.  I am receiving:
> Douglas
Any Sugestions?

-- 
Posted via http://www.ruby-forum.com/.
_______________________________________________
Rails mailing list
Rails@lists.rubyonrails.org
http://lists.rubyonrails.org/mailman/listinfo/rails

Chris McDevitt

2006-Jan-11 02:33 UTC

head link

[Rails] RE: Re: Help -- NoMethodError in

Tom Fakes wrote:> This line:
> 
> 	@cart = add_product(product)
> 
> Should be
> 
> 	@cart.add_product(product)
> 
> 	def add_to_cart
> 		product = Product.find(params[:id])
> 		@cart = find_cart
> 		@cart.add_product(product)
> 		redirect_to(:action => ''display_cart'')
> 	end


That worked!  Thanks very very much!

-- 
Posted via http://www.ruby-forum.com/.

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