Adhearsion's dialplan can't access rails models - ruby-on-rails

Question

In my adhearsion dialplan, I have the following code that is causing an immediate disconnect from the call without any output to the log or console:
the_flow = CallFlow.where(:dnis => dnis).first
CallFlow is a model in my rails app (gui/app/models/call_flow.rb), which lives in the gui directory of my adhearsion app. In my .ahnrc file I have:
paths:
# All paths are relative to this file's directory
init: config/startup.rb
dialplan: dialplan.rb
events: events.rb
models: gui/app/models/*.rb
And this is call_flow.rb:
class CallFlow < ActiveRecord::Base
belongs_to :routable, :polymorphic => true
def dialplan
puts self.routable.description.squeeze("\n").strip
end
def target_route=(params)
self.routable = params[:kind].constantize.new(params.reject {|k,v| k == "kind"})
end
end
And finally, I have the following line in config/startup.rb:
config.enable_rails :path => 'gui', :env => :development
I know the model works because I can create records using the rails server. But I don't even know how to get any information about what's going on to make the dialplan disconnect the call when it gets to that first line above.

Answer 1

Some things to check:
Ensure you have set logging to :debug in config/startup.rb
Ensure you have enabled either Rails integration or database integration, not both.
If you are running a version of Adhearsion prior to 1.1.0, some exceptions that occur in dialplan.rb may be silently lost. Consider upgrading to 1.1.0 or later (1.2.0 is current stable) and create an exception handler. This can be a simple message logger or you can report exceptions to Airbrake. See the bottom of this post for a simple Adhearsion exception logger.
Try starting the Adhearsion console to see if your models are loaded at all. Start the Adhearsion console with ahn start console /path/to/ahn/app. You will then have a console similar to the Rails console and should have access to all your ActiveRecord models (assuming the Rails integration loaded correctly).
Example exception logger for Adhearsion 1.1.0 or later. Put this in your events.rb:
events.exception.each do |e|
ahn_log.error e.message
ahn_log.debug e.backtrace.join("\n")
end
General notes on Rails vs. Database integration for Adhearsion:
For Rails integration have a line something like config.enable_rails :path => '/path/to/rails/app', :env => :production
For database integration, use something like:
config.enable_database :adapter => 'mysql',
:username => 'root',
:password => '',
:host => 'localhost'
For database integration only (not Rails integration), you should make sure that your models are in a place where Adhearsion can find them. The default location is models/ but this can be changed by editing the .ahnrc file in the Adhearsion app's base directory.

Answer 2

try to run this code in rails console
first start the console
bundle exec rails console
and then try to run the code which is causing the issue
CallFlow.where(:dnis => "something").first # replace "something" with something valid