Mongrel users - Apr 2010 - Problem with mongrel_rails, but works with script/server

On Mon, Apr 19, 2010 at 9:21 AM,  <rpavesic at gmail.com>
wrote:
> Hi there, I am having problem with mongrel_rails and
> I do not know whom to ask so I found your e-mail as
> one of the last people contributing to mongrel_rails, so
> may be you would be able to help me out.
>
Please, email mongrel-users mailing list for problems, so in that way
all benefit from the answers.

http://rubyforge.org/mailman/listinfo/mongrel-users
> Here is the problem:
> My platform is XP, ruby 1.8.6, rails 2.3.2. mongrel-1.1.5-x86-mswin32-60,
> mongrel_service-0.3.4-x86-mswin32.
>
> I have my application working perfectly when I start it with
> "script/server", but
> when ?I "use mongrel_rails start" it starts the app but on
several
> controllers it breaks (not all of them though <-how come???) and when it
> braks ti shows the
> message "undefined method `reflect_on_association'' for
Service:Module"
>
Do you have a model called Service? mongrel_service it also contains a
module called Service, so maybe ActiveRecord might be clashing, which
is strange.

Please provide a backtrace of the error, not just the last line of the error.
> When I set the break point in,the action of the controller where it breaks,
> and
> when the processing stop on this break point and if I type
> ?>params
> It says
>>"Unknown command: "params". Try "help"
> but If I type
>>eval params
> it shows me the correct content of params hash:
>> {"action"=>"index",
"controller"=>"doctor"}.
>
> Also if I type
>>@_params
> it says
>>"Unknown commad" "@_params". Try "help"
> but if I type
>>eval @_params
> it responds properly
>> {"action"=>"index",
"controller"=>"doctor"}
>
> It even do not understands.
If you''re using ruby-debug, you need to eval to get information from
the process you''re debugging, you can''t call params directly.
> Please help me if you can or may be direct me to somewhere where I could
> find help, advise or answers.
>
Please provide a full backtrace, you might be using a served word for
a controller or model that could be clashing with Mongrel, Rails or
mongrel_service.

Also, join and respond to mongrel-users mailing list, so all benefit
from the findings.

-- 
Luis Lavena
AREA 17
-
Perfection in design is achieved not when there is nothing more to add,
but rather when there is nothing more to take away.
Antoine de Saint-Exup?ry

On Mon, Apr 19, 2010 at 2:07 PM,  <rpavesic at gmail.com>
wrote:
> Hi Luis, thank you very much for the answer. Using eval (per your
> suggestion:)) I was
> able to start debugging the problem.
> The error shows up when executing the following statement:
> @customers=provider.customers
>
> Here is the full error log that
> gets shown on the browser:
> ------>>>>>---------
>
> undefined method `reflect_on_association'' for Service:Module
>
> RAILS_ROOT: C:/RubyOnRails/rails_apps/msms
> Application Trace | Framework Trace | Full Trace
>
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/reflection.rb:257:in `source_reflection''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/reflection.rb:257:in `collect''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/reflection.rb:257:in `source_reflection''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/reflection.rb:288:in `check_validity!''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/associations/has_many_through_association.rb:5:in `initialize''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/associations.rb:1277:in `new''
>
C:/RubyOnRails/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_rec
> ord/associations.rb:1277:in `customers''
> C:/RubyOnRails/rails_apps/msms/app/controllers/doctor_controller.rb:17:in
> `index''
> ---------<<<<<<<<<-----
>
> I have the following relatonships relating to this problem in my models:
>
> class Provider < ActiveRecord::Base
> ? ? ? ?has_many :services
> ? ? ? ?has_many :customers, :through => :services
> ? ? ?......
> ? ? ? ?.....
> end
>
> class Service < ActiveRecord::Base
> ? ? ? ?belongs_to :provider
> ? ? ? ?belongs_to :customer
> ? ? ? ?belongs_to :invoice
> ? ? ?......
> ? ? ? ?.....
> end
>
> class Customer < ActiveRecord::Base
> ? ? ? ?has_many :services
> ? ? ? ?has_many :providers, :through => :services
> ? ? ? ?has_many :invoices, :dependent=> :destroy
> ? ? ?......
> ? ? ? ?.....
> end
>
> class Invoice < ActiveRecord::Base
> ? ? ? ?has_many :services
> ? ? ? ?belongs_to :customer
> ? ? ?......
> ? ? ? ?.....
> end
>
> What is puzzling is that if I use "script/server" (which starts
the mongrel)
> all works fine,
> but if I use "mongrel_rails start" this error shows up. What is
diffenrent
> under the hub between
> these two?
script/server initializes Rails before Mongrel, while mongrel_rails
does the opposite.

Since you''ve installed mongrel_service gem, it defines a Service
module, which is used as plugin to install inside mongrel how command
functionality:

http://github.com/fauna/mongrel_service/blob/master/lib/mongrel_service/init.rb#L8-9

If you aren''t using mongrel_service, I would suggest you remove the
gem.

The problem is that the plugin for mongrel can''t be named differently.
If we do, then will break compatibility with old versions.

-- 
Luis Lavena
AREA 17
-
Perfection in design is achieved not when there is nothing more to add,
but rather when there is nothing more to take away.
Antoine de Saint-Exup?ry