In Rails, you add error messages to the view like so:
<% remote_form_for(mymodel) do |f| %>
<%= f.error_messages %>
However, if mymodel is a Datamapper rather than an ActiveRecord model,
it produces an error:
undefined method `count' for {}:Hash
At the moment I am addressing this unfortunately by removing the call
to error_messages in the view.
Is there a better workaround?
This is the stack trace, in case it helps (I just updated to the
latest 0.10 release candidate for all dm gems).
----------------------------------------------------------------------------------------------------
C:/Ruby18/lib/ruby/gems/1.8/gems/dm-validations-0.10.0/lib/dm-
validations/validation_errors.rb:106:in `send'
C:/Ruby18/lib/ruby/gems/1.8/gems/dm-validations-0.10.0/lib/dm-
validations/validation_errors.rb:106:in `method_missing'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
helpers/active_record_helper.rb:179:in `error_messages_for'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
renderable.rb:77:in `inject'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
helpers/active_record_helper.rb:179:in `each'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
helpers/active_record_helper.rb:179:in `inject'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
helpers/active_record_helper.rb:179:in `error_messages_for'
C:/Ruby18/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_view/
helpers/form_helper.rb:984:in `error_messages'
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