Hey smart people. I'm trying to solve a problem I am sure has been
solved by someone out there already, and am hoping one of them is on
this list.
Here goes, as simply as I can make it:
I am building a set of engine-ized plugins for core services I want to
reuse (like C++ libraries). So, for example, I have a calendar plugin,
a user management plugin, a file management plugin...
I want to have relationships between these plugins, for example, have a
User optionally has_one() a Calendar. This should *only* happen if the
calendar plugin is installed.
So, first question:
How do I figure out, safely and consistently, that a given plugin
has been installed? I seem to recall some sort of list being maintained
by Rails, but couldn't find where I read about it. Is there such a
list? When does it get initialized?
Second question:
I'm planning on creating the relationships using polymorphic
associations. Is there a smarter/better way to do this? Has anyone
tried cross-plugin associations?
Thanks for any thoughts/advice on this. I'm *really* enjoying the
functionality the engines plugin provides. (Thanks, James!)
-Rob Morris
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