Illegal id causes re-render error

[jcoyne]

AbstractController::DoubleRenderError (Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".):
actionpack (3.2.13) lib/action_controller/metal/rendering.rb:15:in render' actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:40:inblock (2 levels) in render'
activesupport (3.2.13) lib/active_support/core_ext/benchmark.rb:5:in block in ms' /home/hydradm/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/benchmark.rb:296:inrealtime'
activesupport (3.2.13) lib/active_support/core_ext/benchmark.rb:5:in ms' actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:40:inblock in render'
actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:83:in cleanup_view_runtime' activerecord (3.2.13) lib/active_record/railties/controller_runtime.rb:24:incleanup_view_runtime'
actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:39:in render' blacklight (4.2.1) lib/blacklight/catalog.rb:308:ininvalid_solr_id_error'
activesupport (3.2.13) lib/active_support/rescuable.rb:80:in call' activesupport (3.2.13) lib/active_support/rescuable.rb:80:inrescue_with_handler'
actionpack (3.2.13) lib/action_controller/metal/rescue.rb:15:in rescue_with_handler' actionpack (3.2.13) lib/action_controller/metal/rescue.rb:32:inrescue in process_action'
actionpack (3.2.13) lib/action_controller/metal/rescue.rb:29:in process_action' actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:30:inblock in process_action'
activesupport (3.2.13) lib/active_support/notifications.rb:123:in block in instrument' activesupport (3.2.13) lib/active_support/notifications/instrumenter.rb:20:ininstrument'
activesupport (3.2.13) lib/active_support/notifications.rb:123:in instrument' actionpack (3.2.13) lib/action_controller/metal/instrumentation.rb:29:inprocess_action'
actionpack (3.2.13) lib/action_controller/metal/params_wrapper.rb:207:in process_action' activerecord (3.2.13) lib/active_record/railties/controller_runtime.rb:18:inprocess_action'

[jcoyne]

Looks like an invalid_solr_id triggers a double render exception in production, and in development mode It causes a view template error:

undefined method []' for nil:NilClass`