I think your trouble here is with the polymorphic association. (Why do
you need it - is there another model that has_one or has_many
:internships :as => :employer?)

Try either removing :polymorphic => true if you don't need it, or
adding :as => :employer to the Employer's has_many :internships line.

http://wiki.rubyonrails.org/rails/pages/UnderstandingPolymorphicAssociations

On Sun, Feb 22, 2009 at 11:12 PM, Sergio Ruiz
<[email protected]> wrote:
> i am currently trying to use :through to attach two of my models
> together using geokit. for some reason, i am running into a problem:
>
> ArgumentError: Unknown key(s): as
>
> i have two models, one that is geocoded, and one that belongs to that
> model. the models look like:
>
> ,----[ employer.rb ]
> | class Employer < ActiveRecord::Base
> |   acts_as_mappable
> |   before_validation_on_create :geocode_address
> |
> |   has_many :internships
> |   belongs_to :account
> |   belongs_to :role
> |
> |  private
> |   def geocode_address
> |     geo=GeoKit::Geocoders::MultiGeocoder.geocode(address1 + " " + city + " 
> " + state + " " + zip)
> |     errors.add(:address, "Could not Geocode address") if !geo.success
> |     self.lat, self.lng = geo.lat,geo.lng if geo.success
> |   end
> |
> | end
> `----
>
> and an internship:
>
> ,----[ internship.rb ]
> | class Internship < ActiveRecord::Base
> |   has_many :internship_categories
> |   belongs_to :employer, :polymorphic => true
> |   acts_as_mappable :through => :employer
> | end
> `----
>
> it seems like there is an intermediary object in the docuements called
> ':locatable' that connects the the two together, but i just can't get
> how that is being called, or what i am supposed to do with it.
>
> no matter where i put it, i end up with this error:
>
> ArgumentError: Unknown key(s): as
>
> if i remove: ":as => :locatable" i end up with a problem in that the
> model doesn't have :lat or :lng, which makes me think that
> the :through is not working at all.
>
> please let me know how to attack this..
>
> thanks!
> --

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