I am running a Rails 5 application which has 2 models - a User and a Provider. I am using multiple table inheritance to show that each Provider "is a" User (via the active_record-acts_as gem). So, in effect, creating a Provider with the related fields would create a User at the same time.
I wanted to implement slugging for these models, so I integrated the friendly_id gem for that purpose.
Both models are slugged via a field called username. The code in question being:
class User
extend FriendlyId
friendly_id :username, use: :slugged
# ...
end
for the User model and
class Provider
extend FriendlyId
friendly_id username, use: :slugged
def username
acting_as.username # this fetches the parent model (User)'s username field.
end
# ...
end
for the Provider model.
When I attempt to create a Provider via a controller action (providers#create), it fails, with the error being:
TypeError at /providers
nil is not a symbol nor a string
The stack trace identifies the problem to be at lib/friendly_id/slugged.rb:299, which is the body of the should_generate_new_friendly_id? method. This method was called by the set_slug method in the same file, slugged.rb.
I have created an issue on the GitHub page of friendly_id, where you can find the request parameters and full stack trace.
Edit: added friendly_id_config for both: https://gist.github.com/mindseyeblind/9b78c588f5008a494f7157e72da1de6e
