Engines: accessing classes from the hosting-apps lib

Rails
1

I have an engine and can access model-classes of the hosting app without
any troubles.

But when I try to access classes that are defined in the lib-directory
of
the hosting app, they are not found and I get a

uninitialized constant Redmine

where Redmine is a module defined in the lib-directory of the hosting
app.
The lib-directory has added this dir to the autoload_paths, but the
engine
does not see them. The documentation
(Rails::Engine) here is a litte
vague:

The Application class adds a couple more paths to this set. And as in
your
Application, all folders under app are automatically added to the load
path. If you have an app/observers folder for example, it will be added
by
default.

but the paths defined as autoload_paths are not added by default?!

Is there a way I can get the engine to load the classes in the lib-dir
of
the hosting app?!

thx for any help,
stefan

2

ok, got this one:

reason for the trouble was the load-sequence: I tried to include a
module
from the hosting app inside a class inside my plugin: this fails inside
tests, as the plugin-classes are loaded before the rest of the app (or
at
least, that is my guess): I solved this by including the module only at
runtime with a

class MyPluginClass
def initialize
self.class.send :include, ::Redmine::I18n unless
self.class.include? ::Redmine::I18n
end
…
end

This gets rid of the direct include-dependency and postpones the
include:
When the class is loaded for the first time, the include is added - now
all
classes, even the ones from lib are available.

Am Donnerstag, 12. Juli 2012 12:05:08 UTC+2 schrieb
[email protected]: