Yikes! I can't reproduce this... does the test suite pass for you? Does 
the same thing happen when you just do a non-partialized template with 
something very simple? When you use bin/haml?

- Nathan

Russell Norris wrote:
> This is happening all over my code. I tried a few puts but inspecting 
> the attributes or attributes_hash [which I suspect is the problem] 
> raises an error about undefined method 'buffer' for "":String. :/ 
> Here's the backtrace without the puts...
>
> ActionView::TemplateError: undefined method `merge!' for "":String
>     On line #2 of app/views/categories/_form.haml
>
>     1: %p
>     2:   %label{:for => :category_title} Title
>     3:   = f.text_field :title, :size => 50, :class => :text
>     4: %p
>     5:   %label{:for => :category_misc} Description <em>(optional)</em>
>
>     app/views/categories/_form.haml:2
>     vendor/plugins/haml/lib/haml/buffer.rb:121:in `merge_attrs'
>     vendor/plugins/haml/lib/haml/buffer.rb:92:in `open_tag'
>     (eval):12:in `_render_haml_2'
>     vendor/plugins/haml/lib/haml/engine.rb:434:in `send'
>     vendor/plugins/haml/lib/haml/engine.rb:434:in `compile'
>     vendor/plugins/haml/lib/haml/engine.rb:186:in `to_html'
>     vendor/plugins/haml/lib/haml/template.rb:69:in `render'
>     vendor/rails/actionpack/lib/action_view/base.rb:502:in 
> `delegate_render'
>     vendor/rails/actionpack/lib/action_view/base.rb:324:in 
> `render_template_old'
>     vendor/plugins/haml/lib/haml/template.rb:96:in `render_template'
>     vendor/rails/actionpack/lib/action_view/base.rb:286:in `render_file'
>     vendor/rails/actionpack/lib/action_view/base.rb:301:in 
> `render_without_haml'
>     vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:17:in 
> `render'
>     vendor/rails/actionpack/lib/action_view/partials.rb:62:in 
> `render_partial'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:26:in 
> `benchmark'
>     /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
>     /usr/lib/ruby/1.8/benchmark.rb:307:in `realtime'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:26:in 
> `benchmark'
>     vendor/rails/actionpack/lib/action_view/partials.rb:61:in 
> `render_partial'
>     vendor/rails/actionpack/lib/action_view/base.rb:312:in 
> `render_without_haml'
>     vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:17:in 
> `render'
>     (eval):12:in `_render_haml_1'
>     vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:82:in `call'
>     vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:82:in 
> `form_for'
>     vendor/plugins/haml/lib/haml/helpers.rb:284:in `call'
>     vendor/plugins/haml/lib/haml/helpers.rb:284:in `bind_proc'
>     
> vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:220:in 
> `fields_for'
>     
> vendor/rails/actionpack/lib/action_view/helpers/form_helper.rb:180:in 
> `form_for_without_haml'
>     vendor/plugins/haml/lib/haml/helpers/action_view_mods.rb:86:in 
> `form_for'
>     (eval):10:in `_render_haml_1'
>     vendor/plugins/haml/lib/haml/engine.rb:434:in `send'
>     vendor/plugins/haml/lib/haml/engine.rb:434:in `compile'
>     vendor/plugins/haml/lib/haml/engine.rb:186:in `to_html'
>     vendor/plugins/haml/lib/haml/template.rb:69:in `render'
>     vendor/rails/actionpack/lib/action_view/base.rb:502:in 
> `delegate_render'
>     vendor/rails/actionpack/lib/action_view/base.rb:324:in 
> `render_template_old'
>     vendor/plugins/haml/lib/haml/template.rb:96:in `render_template'
>     vendor/rails/actionpack/lib/action_view/base.rb:286:in `render_file'
>     vendor/rails/actionpack/lib/action_controller/base.rb:875:in 
> `render_file'
>     vendor/rails/actionpack/lib/action_controller/base.rb:810:in 
> `render_with_no_layout'
>     vendor/rails/actionpack/lib/action_controller/layout.rb:246:in 
> `render_without_benchmark'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in 
> `render_without_query_stats'
>     /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:51:in 
> `render_without_query_stats'
>     vendor/plugins/query_stats/lib/query_stats/labeler.rb:19:in `render'
>     app/controllers/oyster_controller.rb:113:in `render_common_form'
>     app/controllers/categories_controller.rb:12:in `new'
>     vendor/rails/actionpack/lib/action_controller/base.rb:1132:in `send'
>     vendor/rails/actionpack/lib/action_controller/base.rb:1132:in 
> `perform_action_without_filters'
>     vendor/rails/actionpack/lib/action_controller/filters.rb:713:in 
> `call_filters'
>     vendor/rails/actionpack/lib/action_controller/filters.rb:752:in 
> `perform_action_without_benchmark'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in 
> `perform_action_without_rescue'
>     /usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
>     
> vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in 
> `perform_action_without_rescue'
>     vendor/rails/actionpack/lib/action_controller/rescue.rb:133:in 
> `perform_action_without_caching'
>     vendor/rails/actionpack/lib/action_controller/caching.rb:661:in 
> `perform_action'
>     vendor/rails/activerecord/lib/active_record/query_cache.rb:99:in 
> `cache'
>     vendor/rails/actionpack/lib/action_controller/caching.rb:660:in 
> `perform_action'
>     vendor/rails/actionpack/lib/action_controller/base.rb:494:in `send'
>     vendor/rails/actionpack/lib/action_controller/base.rb:494:in 
> `process_without_filters'
>     vendor/rails/actionpack/lib/action_controller/filters.rb:747:in 
> `process_without_session_management_support'
>     
> vendor/rails/actionpack/lib/action_controller/session_management.rb:122:in 
> `sass_old_process'
>     vendor/plugins/haml/lib/sass/plugin.rb:124:in `process_without_test'
>     
> vendor/rails/actionpack/lib/action_controller/test_process.rb:15:in 
> `process'
>     
> vendor/rails/actionpack/lib/action_controller/test_process.rb:394:in 
> `process'
>     
> vendor/rails/actionpack/lib/action_controller/test_process.rb:365:in `get'
>     test/functional/categories_controller_test.rb:43:in `test_new'
>     test/test_helper.rb:43:in `active_users'
>     test/test_helper.rb:42:in `each'
>     test/test_helper.rb:42:in `active_users'
>     test/functional/categories_controller_test.rb:41:in `test_new'
>     /usr/lib/ruby/1.8/test/unit/testcase.rb:78:in `__send__'
>     /usr/lib/ruby/1.8/test/unit/testcase.rb:78:in `run'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:34:in `run'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `each'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `run'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:34:in `run'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `each'
>     /usr/lib/ruby/1.8/test/unit/testsuite.rb:33:in `run'
>     /usr/lib/ruby/1.8/test/unit/ui/testrunnermediator.rb:46:in `run_suite'
>     /usr/lib/ruby/1.8/test/unit/ui/console/testrunner.rb:67:in 
> `start_mediator'
>     /usr/lib/ruby/1.8/test/unit/ui/console/testrunner.rb:41:in `start'
>     /usr/lib/ruby/1.8/test/unit/ui/testrunnerutilities.rb:29:in `run'
>     /usr/lib/ruby/1.8/test/unit/autorunner.rb:200:in `run'
>     /usr/lib/ruby/1.8/test/unit/autorunner.rb:13:in `run'
>     /usr/lib/ruby/1.8/test/unit.rb:278
>     test/functional/categories_controller_test.rb:94
>
> RSL
>
> >


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