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@@ -45,7 +45,11 @@ class ActiveRecord::Base
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     # Write a file that can be loaded with +fixture :some_table+ in tests.
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     # Uses existing data in the database.
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     #
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-    # Will be written to +test/fixtures/table_name.yml+. Can be restricted to some number of rows.
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+    # Will be written to +test/fixtures/table_name.yml+. Can be restricted to
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+    # some number of rows.
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+    #
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+    # If a method named +to_named_fixture+ is available for the models, the
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+    # fixtures will be named with the result of that method.
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     def to_fixture(limit=nil)
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       opts = {}
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       opts[:limit] = limit if limit
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@@ -53,7 +57,7 @@ class ActiveRecord::Base
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       write_file(File.expand_path("test/fixtures/#{table_name}.yml", RAILS_ROOT), 
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           self.find(:all, opts).inject({}) { |hsh, record|
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               fixture_name = if record.respond_to?(:to_named_fixture)
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-                record.to_named_fixture
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+                record.to_named_fixture.to_s
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               else
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                 "#{table_name.singularize}_#{'%05i' % record.id rescue record.id}"
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               end