RailsAdmin::MainController# (NoMethodError) "undefined method `label' for nil:NilClass"

[thatandyrose]

Was doing a very vanilla "export to csv" action. Nothing custom, no associations. Got this error on export:

RailsAdmin::MainController# (NoMethodError) "undefined method `label' for nil:NilClass"

/app/vendor/bundle/ruby/1.9.1/gems/rails_admin-0.4.9/lib/rails_admin/support/csv_converter.rb:61:in block (2 levels) in to_csv' /app/vendor/bundle/ruby/1.9.1/gems/rails_admin-0.4.9/lib/rails_admin/support/csv_converter.rb:60:inmap'
/app/vendor/bundle/ruby/1.9.1/gems/rails_admin-0.4.9/lib/rails_admin/support/csv_converter.rb:60:in block in to_csv' /app/vendor/ruby-1.9.3/lib/ruby/1.9.1/csv.rb:1243:ingenerate'
/app/vendor/bundle/ruby/1.9.1/gems/rails_admin-0.4.9/lib/rails_admin/support/csv_converter.rb:58:in to_csv' /app/vendor/bundle/ruby/1.9.1/gems/rails_admin-0.4.9/lib/rails_admin/config/actions/index.rb:63:inblock (4 levels) in class:Index'
/app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/action_controller/metal/mime_responds.rb:196:in call' /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.11/lib/action_controller/metal/mime_responds.rb:196:inrespond_to'

[sunnyrjuneja]

What version of Rails, Ruby and RailsAdmin are you running?

[thatandyrose]

Hey Sunny, here's the info:

rails_admin (0.4.9)
ruby '1.9.3'
gem 'rails', '3.2.11'

[amuntasim]

If any polymorphic fields are there in the exported fields list, its showing that message

[nynhex]

Did anyone else figure out this issue? I'm on 0.3.0 and Rails 3.2.22 and still having this same problem. I'm stuck with legacy Rails/Rails_admin and haven't figured out how to deal with this or patch. Sorry for bumping an old issue.