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maddy

2009-Sep-25 09:57 UTC

NoMethodError : undefined method `stringify_keys!'' for "2":String

Hi,

   I have been trying to create a small Rails application. In one of
the steps, I am facing this error as "NoMethodError in
ContactController#update ......  undefined method `stringify_keys!''
for "2":String".

  Let me give a brief description of the application. This application
is to Create, View and Update contacts. The problem came when updating
a record.

  The "Update" action in controller file looks like this,

       def update
             @contact = Contact.new(params[:id])
             @contact.attributes = params[:contact]
             @contact.save!
             redirect_to :action => "index"
       end

 Below is the complete error stack,

-------------------------------------------
xxxxxxxxxxxxxxxx--------------------------------------------------


   NoMethodError in ContactController#update
undefined method `stringify_keys!'' for "2":String
RAILS_ROOT: D:/rails_projects/contactlist

Application Trace | Framework Trace | Full Trace
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:2111:in `attributes=''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:1926:in `initialize''
app/controllers/contact_controller.rb:24:in `new''
app/controllers/contact_controller.rb:24:in `update''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:2111:in `attributes=''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:1926:in `initialize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:1158:in `send''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:1158:in `perform_action_without_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:697:in `call_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:689:in `perform_action_without_benchmark''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/benchmarking.rb:68:in
`perform_action_without_rescue''
D:/RoR/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/benchmarking.rb:68:in
`perform_action_without_rescue''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/rescue.rb:199:in `perform_action_without_caching''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/caching.rb:678:in `perform_action''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/connection_adapters/abstract/query_cache.rb:33:in
`cache''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/query_cache.rb:8:in `cache''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/caching.rb:677:in `perform_action''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:524:in `send''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:524:in `process_without_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:685:in
`process_without_session_management_support''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/session_management.rb:123:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:388:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:171:in `handle_request''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:115:in `dispatch''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:126:in `dispatch_cgi''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:9:in `dispatch''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:76:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:74:in `synchronize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:74:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:159:in `process_client''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:158:in `each''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:158:in `process_client''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `initialize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `new''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `initialize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `new''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:282:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:281:in `each''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:281:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/
mongrel_rails:128:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/command.rb:212:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/
mongrel_rails:281
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:342:in `new_constants_in''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/
mongrel.rb:64
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:496:in `require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:342:in `new_constants_in''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:496:in `require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:
39
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
script/server:3
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:2111:in `attributes=''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/base.rb:1926:in `initialize''
app/controllers/contact_controller.rb:24:in `new''
app/controllers/contact_controller.rb:24:in `update''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:1158:in `send''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:1158:in `perform_action_without_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:697:in `call_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:689:in `perform_action_without_benchmark''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/benchmarking.rb:68:in
`perform_action_without_rescue''
D:/RoR/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/benchmarking.rb:68:in
`perform_action_without_rescue''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/rescue.rb:199:in `perform_action_without_caching''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/caching.rb:678:in `perform_action''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/connection_adapters/abstract/query_cache.rb:33:in
`cache''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/
active_record/query_cache.rb:8:in `cache''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/caching.rb:677:in `perform_action''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:524:in `send''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:524:in `process_without_filters''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/filters.rb:685:in
`process_without_session_management_support''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/session_management.rb:123:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/base.rb:388:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:171:in `handle_request''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:115:in `dispatch''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:126:in `dispatch_cgi''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/
action_controller/dispatcher.rb:9:in `dispatch''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:76:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:74:in `synchronize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/rails.rb:74:in `process''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:159:in `process_client''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:158:in `each''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:158:in `process_client''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `initialize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `new''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:285:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `initialize''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `new''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel.rb:268:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:282:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:281:in `each''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/configurator.rb:281:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/
mongrel_rails:128:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/lib/
mongrel/command.rb:212:in `run''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/
mongrel_rails:281
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:342:in `new_constants_in''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:489:in `load''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/
mongrel.rb:64
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:496:in `require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:342:in `new_constants_in''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:496:in `require''
D:/RoR/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:
39
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require''
D:/RoR/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
script/server:3
Request
Parameters:

{"commit"=>"Update",
 "authenticity_token"=>"9ebbca881cc0e31be50530d9b3f1a38fcf1a74d1",
 "contact"=>{"city"=>"bangalo",
 "country"=>"India",
 "phone"=>"234122342",
 "first_name"=>"abc",
 "last_name"=>"def",
 "address"=>"weiwq,
 werwqqq,
 wer",
 "state"=>"KA",
 "email"=>"adns-jzWB7PFLUjI@public.gmane.org"},
 "id"=>"2"}

Show session dump

---
:csrf_id: 5d52f51ba29b9131292e9e783e78f09b
flash: !map:ActionController::Flash::FlashHash {}


Response
Headers:

{"cookie"=>[],
 "Cache-Control"=>"no-cache"}

-------------------------------------------------
xxxxxxxxxxxxxxxxxxxxxxx----------------------------------------

What I feel is that there is something wrong with this statement in
''Update'' action,

   @contact.attributes = params[:contact]

 I just don''t have enough command on this language to exactly know the
problem.

 Can anyone help me solving this problem? Please do let me know if any
additional details are needed.

Many Thanks!!
Maddy

Amar Daxini

2009-Sep-25 10:41 UTC

head link

Re: NoMethodError : undefined method `stringify_keys!'' for "2":String

maddy wrote:> I think you are updating @contact
@contact.update_attributes(params[:contact])
-- 
Posted via http://www.ruby-forum.com/.

Frederick Cheung

2009-Sep-25 10:59 UTC

head link

Re: NoMethodError : undefined method `stringify_keys!'' for "2":String

On Sep 25, 10:57 am, maddy
<murali.man...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>   The "Update" action in controller file looks like this,
>
>        def update
>              @contact = Contact.new(params[:id])
This should be Contact.find

Fred>              -Ynu+NT5FEZ2xJTTgsDN3Wt7lo5+wdyHW@public.gmane.org =
params[:contact]
>              -Ynu+NT5FEZ1LYScDn9snng@public.gmane.org!
>              redirect_to :action => "index"

maddy

2009-Sep-29 08:31 UTC

head link

Re: NoMethodError : undefined method `stringify_keys!'' for "2":String

Hi Fred,

   Thanks a lot!

   You were right. It had to be Contact.find.

Regards,
maddy

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