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Berger, Daniel

2006-Aug-08 14:57 UTC

[Rails] Problem with plurals, migrations?

Hi,

Ruby 1.8.4
Rails 1.1.4
Windows XP Pro

I''m hitting an issue with migrations that I suspect relates to
pluralization.  Here''s the migration:

class Hardware < ActiveRecord::Migration   
   def self.up
      create_table :hardware do |h|
         h.column :vendor, :string, :limit => 32
         h.column :model,  :string, :limit => 32
      end

      Hardware.create(:vendor => ''Foo'', :model =>
''Bar'')
   end

   def self.down
      drop_table :hardware
   end
end

Here''s the model:

class Hardware < ActiveRecord::Base
   set_table_name "hardware"
   has_many :schedules
end

When I run the migration the table creation occurs, but then I get this
error:

-- create({:vendor=>"Foo", :model=>"Bar"})
rake aborted!
undefined method `create'' for
#<ActiveRecord::ConnectionAdapters::PostgreSQLAdapter:0x39293cc>

My guess is that it was expecting a "hardwares" table instead of
"hardware", and is getting confused.  But, I didn''t see a
method in the
docs to set the table name ala ActiveRecord.

Or am I missing something obvious here?  I checked the docs and Google,
but didn''t find anything.

Below is the full trace.

Thanks,

Dan

rake aborted!
undefined method `create'' for
#<ActiveRecord::ConnectionAdapters::PostgreSQLAdapter:0x39293cc>
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:272:in `send''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:272:in `method_mis
sing''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:256:in `say_with_t
ime''
c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:256:in `say_with_t
ime''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:270:in `method_mis
sing''
./db/migrate//004_hardware.rb:13:in `real_up''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:210:in `migrate''
c:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:210:in `migrate''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:332:in `migrate''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:327:in `migrate''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:294:in `up''
c:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/mig
ration.rb:285:in `migrate''
c:/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/tasks/databases.rake:4
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:357:in `invoke''
c:/ruby/lib/ruby/1.8/thread.rb:135:in `synchronize''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run''
c:/ruby/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/rake:7
c:/ruby/bin/rake.bat:25


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dblack@wobblini.net

2006-Aug-08 15:18 UTC

head link

[Rails] Problem with plurals, migrations?

Hi --

On Tue, 8 Aug 2006, Berger, Daniel wrote:
> Hi,
>
> Ruby 1.8.4
> Rails 1.1.4
> Windows XP Pro
>
> I''m hitting an issue with migrations that I suspect relates to
> pluralization.  Here''s the migration:
>
> class Hardware < ActiveRecord::Migration
>   def self.up
>      create_table :hardware do |h|
>         h.column :vendor, :string, :limit => 32
>         h.column :model,  :string, :limit => 32
>      end
>
>      Hardware.create(:vendor => ''Foo'', :model =>
''Bar'')
>   end
>
>   def self.down
>      drop_table :hardware
>   end
> end
>
> Here''s the model:
>
> class Hardware < ActiveRecord::Base
>   set_table_name "hardware"
>   has_many :schedules
> end
>
> When I run the migration the table creation occurs, but then I get this
> error:
>y -- create({:vendor=>"Foo",
:model=>"Bar"})> rake aborted!
> undefined method `create'' for
> #<ActiveRecord::ConnectionAdapters::PostgreSQLAdapter:0x39293cc>
>
> My guess is that it was expecting a "hardwares" table instead of
> "hardware", and is getting confused.  But, I didn''t see
a method in the
> docs to set the table name ala ActiveRecord.
Could the problem be that you''ve got two classes named Hardware?
Maybe name the migration class CreateHardware and see what happens.


David

-- 
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Berger, Daniel

2006-Aug-08 15:37 UTC

head link

[Rails] Problem with plurals, migrations?

> -----Original Message-----
> From: rails-bounces@lists.rubyonrails.org 
> [mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of 
> dblack@wobblini.net
> Sent: Tuesday, August 08, 2006 9:18 AM
> To: rails@lists.rubyonrails.org
> Subject: Re: [Rails] Problem with plurals, migrations?
> 
> 
> Hi --
> 
> On Tue, 8 Aug 2006, Berger, Daniel wrote:
> 
> > Hi,
> >
> > Ruby 1.8.4
> > Rails 1.1.4
> > Windows XP Pro
> >
> > I''m hitting an issue with migrations that I suspect relates
to
> > pluralization.  Here''s the migration:
> >
> > class Hardware < ActiveRecord::Migration
> >   def self.up
> >      create_table :hardware do |h|
> >         h.column :vendor, :string, :limit => 32
> >         h.column :model,  :string, :limit => 32
> >      end
> >
> >      Hardware.create(:vendor => ''Foo'', :model
=> ''Bar'')
> >   end
> >
> >   def self.down
> >      drop_table :hardware
> >   end
> > end
> >
> > Here''s the model:
> >
> > class Hardware < ActiveRecord::Base
> >   set_table_name "hardware"
> >   has_many :schedules
> > end
> >
> > When I run the migration the table creation occurs, but then I get 
> > this
> > error:
> >
> y -- create({:vendor=>"Foo", :model=>"Bar"})
> > rake aborted!
> > undefined method `create'' for 
> > #<ActiveRecord::ConnectionAdapters::PostgreSQLAdapter:0x39293cc>
> >
> > My guess is that it was expecting a "hardwares" table
instead of
> > "hardware", and is getting confused.  But, I didn''t
see a method in
> > the docs to set the table name ala ActiveRecord.
> 
> Could the problem be that you''ve got two classes named 
> Hardware? Maybe name the migration class CreateHardware and 
> see what happens.
> 
> 
> David
Oh, duh, thanks.  I need more caffeine.

- Dan


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privileged information. Unauthorized use of this communication is strictly 
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in error, please immediately notify the sender by reply e-mail and destroy 
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