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shenry

2008-Jun-17 05:46 UTC

Rails is misinterpreting model name

I have two models

class Ferm < AR::Base
  has_many :daily_analyses
end

class DailyAnalysis < AR::Base
  belongs_to :ferm
end

$ script/console
Loading development environment (Rails 2.0.2)>> f = Ferm.find(:first)
=> #<Ferm ... >>> f.daily_analysesNameError: uninitialized constant Ferm::DailyAnalyAsis
	from /Library/Ruby/Gems/1.8/gems/activesupport-2.0.2/lib/
active_support/dependencies.rb:478:in `const_missing''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
base.rb:1750:in `compute_type''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
reflection.rb:125:in `send''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
reflection.rb:125:in `klass''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
associations/has_many_association.rb:152:in `construct_sql''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
associations/has_many_association.rb:6:in `initialize''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
associations.rb:1032:in `new''
	from /Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/
associations.rb:1032:in `daily_analyses''
	from (irb):3

For some reason Rails is converting "daily_analyses" to
"daily_analy_asis". Using the pluralizer and tableizer for
"daily_analysis" correctly give "daily_analysis".

Should I roll back my schema and rename the table something other than
"daily_analysis?"

Thanks --SH
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Giuseppe Bertini

2008-Jun-17 07:17 UTC

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Re: Rails is misinterpreting model name

Hmmm, that''s weird.
After successfully reproducing your problem, I added the following to 
config/initializers/inflections.rb

Inflector.inflections do |inflect|
  inflect.singular ''daily_analyses'',
''daily_analysis''
end

Now, in the console:
>> "daily_analyses".singularize    # returns
"daily_analysis"
>> "daily_analyses".classify         #returns DailyAnalysis
But calling the association on Ferm still yields an error.

:-O

Giuseppe

shenry wrote:> I have two models
> 
> class Ferm < AR::Base
>   has_many :daily_analyses
> end
> 
> class DailyAnalysis < AR::Base
>   belongs_to :ferm
> end
> 
> $ script/console
> Loading development environment (Rails 2.0.2)
>>> f = Ferm.find(:first)
> => #<Ferm ... >
>>> f.daily_analyses
> NameError: uninitialized constant Ferm::DailyAnalyAsis-- 
Posted via http://www.ruby-forum.com/.

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Phlip

2008-Jun-17 12:20 UTC

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Re: Rails is misinterpreting model name

Giuseppe Bertini wrote:
> Hmmm, that''s weird.
> After successfully reproducing your problem, I added the following to 
> config/initializers/inflections.rb
> 
> Inflector.inflections do |inflect|
>   inflect.singular ''daily_analyses'',
''daily_analysis''
> end
Shouldn''t that be

    inflect.singular ''analyses'', ''analysis''
?


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Max Williams

2008-Jun-17 14:49 UTC

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Re: Rails is misinterpreting model name

You can avoid inflection hassles entirely and just explicitly tell it 
which class to use:

class Ferm < AR::Base
  has_many :daily_analyses, :class_name => "DailyAnalysis"
end

class DailyAnalysis < AR::Base
  belongs_to :ferm
end
-- 
Posted via http://www.ruby-forum.com/.

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shenry

2008-Jun-17 15:05 UTC

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Re: Rails is misinterpreting model name

with :

Inflector.inflections do |inflect|
  inflect.irregular ''daily_analysis'',
''daily_analyses''
end

I get ...
>>"daily_analyses".classify
=> "DailyAnalysis">>ferm.daily_analyses=> NameError: uninitialized constant Ferm::DailyAnalyAsis 
(...etc...)>>"daily_analyses".camelize=>"DailyAnalyses"  # shouldn''t this camelize to
''DailyAnalysis''?>>"daily_analyses".camelize.classify=>"DailyAnalyAsis"

it seems like when rails is putting together the Ferm::DailyAnalysis
relationship it first camelizes "daily_analyses" into
"DailyAnalyses"
then classifies it incorrectly as "DailyAnalyAsis".

I think I''ll just change my table name to something like
"daily".

SH
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Phlip

2008-Jun-17 18:57 UTC

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Re: Rails is misinterpreting model name

shenry wrote:
> Inflector.inflections do |inflect|
>   inflect.irregular ''daily_analysis'',
''daily_analyses''
> end
That inflects too much.

Did anyone try my suggestion?

   inflect.irregular ''analysis'', ''analyses''

It would be the same for ''daily_crisis'' to
''daily_crises''. (-:



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shenry

2008-Jun-18 03:02 UTC

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Re: Rails is misinterpreting model name

@Philp,

I tried your suggestion, same result as the other things I tried.

@Max,

Works great, very simple solution. Thanks,

SH

On Jun 17, 11:57 am, Phlip
<phlip2...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> shenry wrote:
> > Inflector.inflections do |inflect|
> >   inflect.irregular ''daily_analysis'',
''daily_analyses''
> > end
>
> That inflects too much.
>
> Did anyone try my suggestion?
>
>    inflect.irregular ''analysis'',
''analyses''
>
> It would be the same for ''daily_crisis'' to
''daily_crises''. (-:--~--~---------~--~----~------------~-------~--~----~
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Rails - Jun 2008 - Rails is misinterpreting model name

Rails is misinterpreting model name

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