Script.aculo.us helpers "drop_receiving_element" and "sortable_element" broken in Rails 2.1.0
Reported by Mark Myers | June 22nd, 2008 @ 08:05 PM
Script.aculo.us helpers "drop_receiving_element" and
"sortable_element" calling against a nil object and returning a
NoMethodError exception.
I have tested this same code on Rails 1.2.6 and it works successfully.
Example view code 1:
<%= draggable_element :dragit %>
<%= drop_receiving_element :dropHelperDIV, :hoverclass => 'hover' %>
Error "NoMethodError":
You have a nil object when you didn't expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]
Application Trace:
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
url_rewriter.rb:102:in `rewrite_url'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
url_rewriter.rb:88:in `rewrite'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:621:in `url_for'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
url_helper.rb:76:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
url_helper.rb:76:in `url_for'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
prototype_helper.rb:461:in `remote_function'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
scriptaculous_helper.rb:212:in `drop_receiving_element_js'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
scriptaculous_helper.rb:207:in `drop_receiving_element'
app/views/chapter4/draggables.html.erb:5:in
`_run_erb_47app47views47chapter447draggables46html46erb'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
338:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
338:in `execute'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template_handlers/compilable.rb:29:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template_handlers/compilable.rb:29:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template.rb:35:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template.rb:22:in `render_template'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
245:in `render_file'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1108:in `render_for_file'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:841:in `render_with_no_layout'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
layout.rb:251:in `render_without_benchmark'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:51:in `render'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
core_ext/benchmark.rb:8:in `realtime'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:51:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1157:in `default_render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1168:in `perform_action_without_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:580:in `call_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:573:in `perform_action_without_benchmark'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
rescue.rb:201:in `perform_action_without_caching'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
caching/sql_cache.rb:13:in `perform_action'
/Library/Ruby/Gems/1.8/gems/activerecord-2.1.0/lib/active_record/
connection_adapters/abstract/query_cache.rb:33:in `cache'
/Library/Ruby/Gems/1.8/gems/activerecord-2.1.0/lib/active_record/
query_cache.rb:8:in `cache'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
caching/sql_cache.rb:12:in `perform_action'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:529:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:529:in `process_without_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:569:in `process_without_session_management_support'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
session_management.rb:130:in `process'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:389:in `process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:76:in
`process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in
`synchronize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in
`process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
282:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
281:in `each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
281:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:
212:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:354:in `new_constants_in'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/rails-2.1.0/lib/commands/servers/
mongrel.rb:64
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:509:in `require'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:354:in `new_constants_in'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:509:in `require'
/Library/Ruby/Gems/1.8/gems/rails-2.1.0/lib/commands/server.rb:39
-------------------------------------------------------------------------------------------------------------------------------------
Example view code 2:
- x Buy milk
- x Take out trash
- x Make first million
<%= sortable_element :listHandle, :handle => 'handle' %>
Error "NoMethodError":
You have a nil object when you didn't expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]
Application Trace:
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
url_rewriter.rb:102:in `rewrite_url'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
url_rewriter.rb:88:in `rewrite'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:621:in `url_for'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
url_helper.rb:76:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
url_helper.rb:76:in `url_for'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
prototype_helper.rb:461:in `remote_function'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
scriptaculous_helper.rb:141:in `sortable_element_js'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/helpers/
scriptaculous_helper.rb:136:in `sortable_element'
app/views/chapter4/draggables.html.erb:7:in
`_run_erb_47app47views47chapter447draggables46html46erb'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
338:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
338:in `execute'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template_handlers/compilable.rb:29:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template_handlers/compilable.rb:29:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template.rb:35:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/
template.rb:22:in `render_template'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_view/base.rb:
245:in `render_file'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1108:in `render_for_file'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:841:in `render_with_no_layout'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
layout.rb:251:in `render_without_benchmark'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:51:in `render'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
core_ext/benchmark.rb:8:in `realtime'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:51:in `render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1157:in `default_render'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:1168:in `perform_action_without_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:580:in `call_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:573:in `perform_action_without_benchmark'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
rescue.rb:201:in `perform_action_without_caching'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
caching/sql_cache.rb:13:in `perform_action'
/Library/Ruby/Gems/1.8/gems/activerecord-2.1.0/lib/active_record/
connection_adapters/abstract/query_cache.rb:33:in `cache'
/Library/Ruby/Gems/1.8/gems/activerecord-2.1.0/lib/active_record/
query_cache.rb:8:in `cache'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
caching/sql_cache.rb:12:in `perform_action'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:529:in `send'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:529:in `process_without_filters'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
filters.rb:569:in `process_without_session_management_support'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
session_management.rb:130:in `process'
/Library/Ruby/Gems/1.8/gems/actionpack-2.1.0/lib/action_controller/
base.rb:389:in `process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:76:in
`process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in
`synchronize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in
`process'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in
`process_client'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`initialize'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `new'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
282:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
281:in `each'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:
281:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/lib/mongrel/command.rb:
212:in `run'
/Library/Ruby/Gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:354:in `new_constants_in'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:502:in `load'
/Library/Ruby/Gems/1.8/gems/rails-2.1.0/lib/commands/servers/
mongrel.rb:64
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:509:in `require'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:354:in `new_constants_in'
/Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/active_support/
dependencies.rb:509:in `require'
/Library/Ruby/Gems/1.8/gems/rails-2.1.0/lib/commands/server.rb:39
Comments and changes to this ticket
-
-
Bill Coomer July 7th, 2008 @ 04:12 PM
- → Tag cleared.
I have essentially the same problem. If I do the following in a view:
Drop Here<%= drop_receiving_element_js :dropTest, :hoverclass => "hover" %>
I get the
"You have a nil object when you didn't expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]"
error. I can create this error consistently using Rails 2.1.0, ruby 1.8.6 or 1.8.5, running on a win32 platform using mongrel.
-
deliverator August 3rd, 2008 @ 11:58 PM
Same problem using rails 2.1.0 with mongrel on OS X 10.5.4, Ruby 1.8.6 (2008-03-03 patchlevel 114)...
And also using rails 2.1.0 with mongrel on Gentoo with ruby 1.8.6 (2008-03-03 patchlevel 114).
-
Dieter Komendera August 4th, 2008 @ 07:10 AM
This seems to be already fixed by commit 96708af6a58a48c2324a3bf8d34232bc29b398c9: http://github.com/rails/rails/co...
-
Joshua Peek November 10th, 2008 @ 06:51 PM
- → State changed from “new” to “resolved”
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