Rails - Jun 2012 - ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: 'Transactions::DummyDdnlTransaction'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. Pleas

Hello,

I stumble upon this error when loading a subclass of the Transaction
class. For full details, see the pastie:

http://pastie.org/4053678

Error message: ActiveRecord::SubclassNotFound: The single-table
inheritance mechanism failed to locate the subclass:
''Transactions::DummyDdnlTransaction''. This error is raised
because the
column ''type'' is reserved for storing the class in case of
inheritance. Please rename this column if you didn''t intend it to be
used for storing the inheritance class or overwrite
Transactions::DummyDdnlTransaction.inheritance_column to use another
column for that information.

Have Googled around, tried solutions like self.subclasses and
require_dependency but they didn''t work for me.

I''m on Rails 2.3.14.

cmdjohnson

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Answer in your error message rename  column " type", or 
Transactions::DummyDdnlTransaction.inheritance_column="not_type_column"

суббота, 9 июня 2012 г., 5:08:18 UTC+4 пользователь Commander Johnson 
написал:
>
> Hello, 
>
> I stumble upon this error when loading a subclass of the Transaction 
> class. For full details, see the pastie: 
>
> http://pastie.org/4053678 
>
> Error message: ActiveRecord::SubclassNotFound: The single-table 
> inheritance mechanism failed to locate the subclass: 
> ''Transactions::DummyDdnlTransaction''. This error is
raised because the
> column ''type'' is reserved for storing the class in case
of
> inheritance. Please rename this column if you didn''t intend it to
be
> used for storing the inheritance class or overwrite 
> Transactions::DummyDdnlTransaction.inheritance_column to use another 
> column for that information. 
>
> Have Googled around, tried solutions like self.subclasses and 
> require_dependency but they didn''t work for me. 
>
> I''m on Rails 2.3.14. 
>
> cmdjohnson 
>
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Sorry, in real it''s about requiring class, try check if your subclasses
class is loaded properly.

суббота, 9 июня 2012 г., 5:08:18 UTC+4 пользователь Commander Johnson 
написал:
>
> Hello, 
>
> I stumble upon this error when loading a subclass of the Transaction 
> class. For full details, see the pastie: 
>
> http://pastie.org/4053678 
>
> Error message: ActiveRecord::SubclassNotFound: The single-table 
> inheritance mechanism failed to locate the subclass: 
> ''Transactions::DummyDdnlTransaction''. This error is
raised because the
> column ''type'' is reserved for storing the class in case
of
> inheritance. Please rename this column if you didn''t intend it to
be
> used for storing the inheritance class or overwrite 
> Transactions::DummyDdnlTransaction.inheritance_column to use another 
> column for that information. 
>
> Have Googled around, tried solutions like self.subclasses and 
> require_dependency but they didn''t work for me. 
>
> I''m on Rails 2.3.14. 
>
> cmdjohnson 
>
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On Friday, 8 June 2012 21:08:18 UTC-4, Commander Johnson
wrote:
>
> Hello, 
>
> I stumble upon this error when loading a subclass of the Transaction 
> class. For full details, see the pastie: 
>
> http://pastie.org/4053678 
>
> Error message: ActiveRecord::SubclassNotFound: The single-table 
> inheritance mechanism failed to locate the subclass: 
> ''Transactions::DummyDdnlTransaction''. This error is
raised because the
> column ''type'' is reserved for storing the class in case
of
> inheritance. Please rename this column if you didn''t intend it to
be
> used for storing the inheritance class or overwrite 
> Transactions::DummyDdnlTransaction.inheritance_column to use another 
> column for that information. 
>
> Have Googled around, tried solutions like self.subclasses and 
> require_dependency but they didn''t work for me. 
>
>
The autoloader is expecting to find Transactions::DummyDdnlTransaction in 
app/models/transactions/dummy_ddnl_transaction.rb - according to the Gist, 
you''ve got the file in the top level of app/models. Either move it, or 
manually require it.

--Matt Jones 

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