Rails - Feb 2008 - Should there be trouble w/has_many_polymorphs in a plugin?

Folks,

As much as I like generators, I''d greatly prefer to just throw my
has_many_polymorphs tagging and commenting engines into projects as
plugins. However, after transplanting my tag.rb and tagging.rb files
into the lib folder of a ''has_many_tags'' plugin and adding the
obligatory plugin requirements (init.rb and an include in
environment.rb), I''m not having any luck. All I get is a white screen
courtesy of a call to .tag_list (incidentally - anyone know how to get
view exceptions to actually show up instead of just a white screen?)

Due to said white screen and lack of exception data (in logs or
anywhere), I''ve hit a bit of a road block. Does anyone have any
suggestions, or know if there''s some kind of hackery required to make
has_many_polymorphs and plugins happy together?

Thanks,
Mike
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Note - even a ''yes, I''ve successfully used has_many_polymorphs
in a
plugin and/or engine'' would be beneficial. A little confirmation might 
just boost me back into hardcore troubleshooting mode... :-)
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On 11 Feb 2008, at 20:07, Mike Laurence wrote:
>
> Note - even a ''yes, I''ve successfully used
has_many_polymorphs in a
> plugin and/or engine'' would be beneficial. A little confirmation
might
> just boost me back into hardcore troubleshooting mode... :-)
I know nothing about has_many_polymorphs, but here''s a random guess:  
remove your plugin from Dependencies.load_once_paths (I usually do  
this in the init.rb of the plugin).
Otherwise really weird stuff can happen, because your plugin isn''t  
reloaded, but models it references are reloaded.

Fred
>
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Frederick Cheung wrote:
> On 11 Feb 2008, at 20:07, Mike Laurence wrote:
> 
>>
>> Note - even a ''yes, I''ve successfully used
has_many_polymorphs in a
>> plugin and/or engine'' would be beneficial. A little
confirmation might
>> just boost me back into hardcore troubleshooting mode... :-)
> 
> I know nothing about has_many_polymorphs, but here''s a random
guess:
> remove your plugin from Dependencies.load_once_paths (I usually do
> this in the init.rb of the plugin).
> Otherwise really weird stuff can happen, because your plugin isn''t
> reloaded, but models it references are reloaded.
> 
> Fred
Hmmm... tried removing either & both plugins (has_many_polymorphs and my 
plugin) out of the load_once_paths, but it didn''t fix the issue. 
''respond_to'' shows that the tagging methods are in fact
present in my
plugin models, but something''s going wrong in the internals. Guess
I''ll
try and dig deeper.

Load_once_path should help with the debugging process quite a bit, 
though - didn''t know about that one, so thank you for the tip!

FYI to any folks who need to remove anything from load_once_path - if 
''Dependencies.load_once_paths.delete xxxx'' is giving you
trouble (I
couldn''t get my paths to match dynamically due to issues with 
RAILS_ROOT), use:
Dependencies.load_once_paths.delete_if { |e| e.match(/plugin_regex/) }
etc.

That way you''re guaranteed it will delete properly.

Mike
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