Rails - Feb 2010 - Why does config.gem mess up migration?

I was working this morning, trying to clean up my project and I did
something that sent migrations to hell-in-a-hand-basket.

I tried to run rake db:migrate --trace  I got the following error msg:
(in /Users/richardmartin/NetBeansProjects/ReTrace)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Mysql::Error: Table ''rt_dev.priorities'' doesn''t
exist: SELECT * FROM
`priorities`  LIMIT 1
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/abstract_adapter.rb:219:in `log''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/mysql_adapter.rb:323:in `execute''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/mysql_adapter.rb:608:in `select''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/abstract/database_statements.rb:7:in
`select_all_without_query_cache''

I looked at the environment.rb and noticed one thing that was
"abnormal" from my experience. I had cut-pasted the following
config.gem line:
  config.gem ''thoughtbot-factory_girl'', :lib =>
''factory_girl'', :source =>
''http://gems.github.com''

So I changed it to
  config.gem ''thoughtbot-factory_girl'', :lib =>false,
:source =>
''http://gems.github.com''

to look like the other config.gem lines and everything went back to
normal. I have since moved all of them to the config/environments/
test.rb and cucumber.rb since that was where I needed them.

My question that I hope some guru will answer for my own education:
 Why did thaving the clause " :lib => ''factory_girl''
" cause problems
with migrations?

Just want to attain a higher level of understanding.

Rick

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On Feb 12, 2:42 pm, bearblu <r...-nJe+0kHbNGlBDgjK7y7TUQ@public.gmane.org>
wrote:
> I was working this morning, trying to clean up my project and I did
> something that sent migrations to hell-in-a-hand-basket.
>
> I tried to run rake db:migrate --trace  I got the following error msg:
> (in /Users/richardmartin/NetBeansProjects/ReTrace)
> ** Invoke db:migrate (first_time)
> ** Invoke environment (first_time)
> ** Execute environment
> rake aborted!
> Mysql::Error: Table ''rt_dev.priorities'' doesn''t
exist: SELECT * FROM
> `priorities`  LIMIT 1
> /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> connection_adapters/abstract_adapter.rb:219:in `log''
> /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> connection_adapters/mysql_adapter.rb:323:in `execute''
> /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> connection_adapters/mysql_adapter.rb:608:in `select''
> /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> connection_adapters/abstract/database_statements.rb:7:in
> `select_all_without_query_cache''
>
[snip]
> My question that I hope some guru will answer for my own education:
>  Why did thaving the clause " :lib =>
''factory_girl'' " cause problems
> with migrations?
>
> Just want to attain a higher level of understanding.
You''ll get a lot more understanding if you don''t cut the stack
trace
off before it gets interesting... :)

Anyway, the relevant bit appears to be missing from the trace above -
but I''d hazard that you''re somehow querying the DB in your
factory
definitions, most likely a line like "Priority.first" or similar.

--Matt Jones

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