# What it needs to be done to upgrade to 2.0?

**URL:** <https://www.ruby-forum.com/t/what-it-needs-to-be-done-to-upgrade-to-2-0/132954>\
**Category:** Rails\
**Created:** [March 26, 2008, 3:53am UTC](https://www.ruby-forum.com/t/what-it-needs-to-be-done-to-upgrade-to-2-0/132954 "2008-03-26T03:53:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mister\_Yu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/22d042/32.png) [@Mister\_Yu](https://www.ruby-forum.com/u/Mister_Yu)\
**Post date:** [March 26, 2008, 3:53am UTC](https://www.ruby-forum.com/t/what-it-needs-to-be-done-to-upgrade-to-2-0/132954/1 "2008-03-26T03:53:10Z")

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Hi,

I had to left my project for some time to take care of some other  
stuff last December, i was using 1.2.5, everything works just fine  
then.

when i tried to pick up my project and give 2.0 a try, everything  
seems to fall apart and stop running.

first, i solve the OpenID warning  
then, the action\_mailer warning

after this there was this “500 internal server error” problem, no  
matter what url i put in. after i’ve doen some research on google, i  
add “config.action\_controller.session = { :session\_key =\>  
“\_myapp\_session”, :secret =\>“write smth here with at least 30  
characters” }” in my environment.rb, the problem is gone

but things aren’t just that easy, now the problems are just  
everywhere. for example, i’ve got message like:  
The :dependent option expects either :destroy, :delete\_all,  
or :nullify (true)

c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active\_record/  
associations.rb:1149:in `configure_dependency_for_has_many' c:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/ associations.rb:669:in`has\_many’  
vendor/plugins/acts\_as\_rateable/lib/acts\_as\_rateable.rb:12:in  
`acts\_as\_rateable’

my project isn’t really a RESTful design, is there something to do  
with this? do i declare “has\_many” relationship diferently on 2.0?

what exactly needs to be done to upgrade to rails 2.0? is there a  
list? why did it make it so hard to upgrade??

thanks.

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**Author:** ![Mister\_Yu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/22d042/32.png) [@Mister\_Yu](https://www.ruby-forum.com/u/Mister_Yu)\
**Post date:** [March 26, 2008, 8:43am UTC](https://www.ruby-forum.com/t/what-it-needs-to-be-done-to-upgrade-to-2-0/132954/2 "2008-03-26T08:43:17Z")

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On 26 Mar 2008, at 02:52, Mister Yu wrote:

> vendor/plugins/acts\_as\_rateable/lib/acts\_as\_rateable.rb:12:in  
> `acts\_as\_rateable’
> 
> my project isn’t really a RESTful design, is there something to do  
> with this? do i declare “has\_many” relationship diferently on 2.0?

Kind of what it says: you used to be able to say :dependant =\> true,  
but not any more. It looks like thats happening inside the acts as  
rateable plugin so I’d check that you’ve got the latest version of that.

> what exactly needs to be done to upgrade to rails 2.0? is there a  
> list? why did it make it so hard to upgrade??

It was very smooth for me. However they key to that was having really  
good test coverage and then bashing every deprecation warning that  
showed up in the test logs. Plugins are also vulnerable, because they  
often monkey patch internals which are liable to change at the drop of  
a hat.

Fred