Ahh, after some investigation, I found that starting the ferret server
puts the following in the Rails log:
Asked for a remote server ? true, ENV["FERRET_USE_LOCAL_INDEX"] is nil,
server is not_running
Will use remote index server which should be available at
druby://127.0.0.1:9010
Which was only vaguely suspicious, but then the code revealed:
# Usually the automatic detection of server mode works fine, however if
you
# require your model classes in environment.rb they will get loaded
before the
# DRb server is started, so this code is executed too early and
detection won't
# work. In this case you'll get endless loops resulting in "stack level
too deep"
# errors.
# To get around this, start the server with the environment variable
# FERRET_USE_LOCAL_INDEX set to '1'.
Now the comments claim that we would get "stack level too deep" but
because RemoteIndex::add modifies the argument with a to_doc, we
actually get a NoMethodError from the second call to to_doc:
undefined method `to_doc' for {"firstname"=>"Seggy",
"lastname"=>"Umboh", :id=>1}:Ferret::Document
This effectively cuts the infinite loop, and avoids the "stack level too
deep" error.
So, the solution, at least in my case, is to run the server with:
FERRET_USE_LOCAL_INDEX=1 script/ferret_start
Hope that helps...
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