Can't modify frozen hash when upgrade to rails 2.3.2

sadeesh · June 20, 2009, 12:11pm

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?

sadeesh · June 20, 2009, 12:59pm

On Jun 20, 7:25 am, sadeesh [email protected] 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

sadeesh · June 20, 2009, 6:27pm

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


<a href="#" onclick="document.getElementById('Framework-

Trace’).style.display=‘none’;document.getElementById

(‘Full-Trace’).style.display=‘none’;document.getElementById

(‘Application-Trace’).style.display=‘block’
;; return false;">Application Trace |
<a href="#" onclick="document.getElementById('Application-

Trace’).style.display=‘none’;document.getElementById
(‘Full-Trace’).style.display=‘none’;document.getElementById(‘Framework-

Trace’).style.display=‘block’

;; return false;">Framework Trace |
<a href="#" onclick="document.getElementById('Application-

Trace’).style.display=‘none’;document.getElementById
(‘Framework-Trace’).style.display=‘none’;document.getElementById(‘Full-

Trace’).style.display=‘block’

;; return false;">Full Trace
<div id="Application-Trace" style="display: block;">

  <pre><code>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’

<div id="Framework-Trace" style="display: none;">
  <pre><code>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' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ base.rb:1322:in send’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
base.rb:1322:in `perform_actio

n_without_filters’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:617:in call_filter s' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:638:in run_before_

filters’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:189:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:189:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:635:in `run_before_

filters’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:615:in call_filter s' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:610:in perform_act

ion_without_benchmark’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
benchmarking.rb:68:in perform _action_without_rescue' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/ core_ext/benchmark.rb:17:in m

s’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/
core_ext/benchmark.rb:10:in r ealtime' C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/ core_ext/benchmark.rb:17:in m

s’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
benchmarking.rb:68:in perform _action_without_rescue' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ rescue.rb:160:in perform_acti

on_without_flash’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
flash.rb:141:in perform_actio n' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ base.rb:523:in send’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
base.rb:523:in process_withou t_filters' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:606:in process’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
base.rb:391:in process' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ base.rb:386:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
routing/route_set.rb:433:in `c

all’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
dispatcher.rb:88:in dispatch' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ dispatcher.rb:111:in _call’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
dispatcher.rb:82:in initializ e' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ query_cache.rb:29:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
query_cache.rb:29:in `call’

C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
connection_adapters/abstract/query_cache
.rb:34:in cache' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ query_cache.rb:9:in cache’

C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/
query_cache.rb:28:in call' C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/ connection_adapters/abstract/connection_pool .rb:361:in call’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/head.rb:9
:in `call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/methodoverride

.rb:24:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ params_parser.rb:15:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
rewindable_input.rb:25:in `cal

l’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
session/cookie_store.rb:93:in
`call’
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/
cache/strategy/local_cache.rb:24

:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ reloader.rb:9:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
failsafe.rb:11:in `call’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/lock.rb:11
:in `call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/lock.rb:11

:in synchronize' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/lock.rb:11 :in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
dispatcher.rb:106:in `call’

C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/rails/rack/static.rb:
31:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/urlmap.rb :46:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/urlmap.rb

:40:in each' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/urlmap.rb :40:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/rails/rack/
log_tailer.rb:17:in `call’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/content_length
.rb:13:in `call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/chunked.rb

:15:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/handler/mongrel .rb:61:in process’
C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:159:in `orig_process_clie

nt’
C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:158:in each' C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/ mongrel.rb:158:in orig_process_clie
nt’

F:/sadeesh_recital/New Folder/classdrive/master/vendor/plugins/spawn/
lib/patches.rb:59:in process_c lient' C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/ mongrel.rb:285:in run’
C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:285:in `initialize’

C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:285:in new' C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/ mongrel.rb:285:in run’
C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:268:in `initialize’

C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/
mongrel.rb:268:in new' C:/Ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/lib/ mongrel.rb:268:in run’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
vendor/rack-1.0/rack/handler/mongrel

.rb:34:in run' C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/commands/server.rb:111 C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require’
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require’

script/server:3

<div id="Full-Trace" style="display: none;">
  <pre><code>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’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
base.rb:1322:in send' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ base.rb:1322:in perform_actio
n_without_filters’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:617:in call_filter s' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:638:in run_before_
filters’

C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:189:in call' C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ filters.rb:189:in call’
C:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/
filters.rb:635:in `run_before_