# Can't modify frozen hash when upgrade to rails 2.3.2 **URL:** \ **Category:** Rails\ **Created:** [June 20, 2009, 12:11pm UTC](https://www.ruby-forum.com/t/cant-modify-frozen-hash-when-upgrade-to-rails-2-3-2/170656 "2009-06-20T12:11:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![sadeesh](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c6cbf5/32.png) [@sadeesh](https://www.ruby-forum.com/u/sadeesh)\ **Post date:** [June 20, 2009, 12:11pm UTC](https://www.ruby-forum.com/t/cant-modify-frozen-hash-when-upgrade-to-rails-2-3-2/170656/1 "2009-06-20T12:11:43Z")
Hi, When I upgraded my rails application to rails 2.3.2 I am getting error ‘can’t modify frozen hash’ on using @something.update\_attribute(params[:something]). Can anyone help me who is familiarize with this bug? ---
**Author:** ![sadeesh](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c6cbf5/32.png) [@sadeesh](https://www.ruby-forum.com/u/sadeesh)\ **Post date:** [June 20, 2009, 12:59pm UTC](https://www.ruby-forum.com/t/cant-modify-frozen-hash-when-upgrade-to-rails-2-3-2/170656/2 "2009-06-20T12:59:11Z")
On Jun 20, 7:25 am, sadeesh [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Hi, When I upgraded my rails application to rails 2.3.2 I am getting > error ‘can’t modify frozen hash’ on using > > @something.update\_attribute(params[:something]). Can anyone help me > who is familiarize with this bug? > What’s the code around this? what does the stack trace look like ? Fred ---
**Author:** ![sadeesh](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c6cbf5/32.png) [@sadeesh](https://www.ruby-forum.com/u/sadeesh)\ **Post date:** [June 20, 2009, 6:27pm UTC](https://www.ruby-forum.com/t/cant-modify-frozen-hash-when-upgrade-to-rails-2-3-2/170656/3 "2009-06-20T18:27:58Z")
Hey Fred, Sorry for late reply, below is the trace of ajax response caught from firebug. Action Controller: Exception caught body { background-color: #fff; color: #333; } ``` body, p, ol, ul, td { font-family: verdana, arial, helvetica, sans-serif; font-size: 13px; line-height: 18px; } pre { background-color: #eee; padding: 10px; font-size: 11px; } a { color: #000; } a:visited { color: #666; } a:hover { color: #fff; background-color:#000; } ``` # TypeError ``` in Admin/resourceController#script_update ``` ``` can't modify frozen hash ``` `RAILS_ROOT: F:/sadeesh_recital/New Folder/classdrive/master` ` ` ` ``` Application Trace | ``` Framework Trace | ``` Full Trace ``` 
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/

```
active_record/attribute_methods
.rb:313:in []=' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ attribute_methods.rb:313:in wri
te_attribute_without_dirty’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
dirty.rb:139:in write_attribute ' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ attribute_methods.rb:211:in announcement
=’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
base.rb:2745:in send' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ base.rb:2745:in attributes=’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
base.rb:2741:in `each’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
base.rb:2741:in attributes=' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ base.rb:2627:in update_attribut
es’
F:/sadeesh_recital/New Folder/classdrive/master/app/controllers/admin/
resource_controller.rb:423:in
`

``script_update’`

```