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@@ -35,10 +35,10 @@ module ActiveRecord
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             columns = @owner.connection.columns(@reflection.options[:join_table], "#{@reflection.options[:join_table]} Columns")
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             attributes = columns.inject({}) do |attrs, column|
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-              case column.name
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-                when @reflection.primary_key_name
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+              case column.name.to_s
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+                when @reflection.primary_key_name.to_s
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                   attrs[column.name] = @owner.quoted_id
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-                when @reflection.association_foreign_key
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+                when @reflection.association_foreign_key.to_s
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                   attrs[column.name] = record.quoted_id
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                 else
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                   if record.has_attribute?(column.name)

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@@ -50,6 +50,23 @@ class DeveloperForProjectWithAfterCreateHook < ActiveRecord::Base
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     :foreign_key => "developer_id"
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 end
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+class ProjectWithSymbolsForKeys < ActiveRecord::Base
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+  set_table_name 'projects'
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+  has_and_belongs_to_many :developers,
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+    :class_name => "DeveloperWithSymbolsForKeys",
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+    :join_table => :developers_projects,
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+    :foreign_key => :project_id,
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+    :association_foreign_key => "developer_id"
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+end
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+
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+class DeveloperWithSymbolsForKeys < ActiveRecord::Base
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+  set_table_name 'developers'
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+  has_and_belongs_to_many :projects,
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+    :class_name => "ProjectWithSymbolsForKeys",
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+    :join_table => :developers_projects,
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+    :association_foreign_key => :project_id,
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+    :foreign_key => "developer_id"
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+end
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 class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
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   fixtures :accounts, :companies, :categories, :posts, :categories_posts, :developers, :projects, :developers_projects,
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@@ -650,4 +667,16 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
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   def test_has_many_through_polymorphic_has_manys_works
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     assert_equal [10, 20].to_set, pirates(:redbeard).treasure_estimates.map(&:price).to_set
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   end
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+
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+  def test_symbols_as_keys
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+    developer = DeveloperWithSymbolsForKeys.new(:name => 'David')
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+    project = ProjectWithSymbolsForKeys.new(:name => 'Rails Testing')
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+    project.developers << developer
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+    project.save!
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+
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+    assert_equal 1, project.developers.size
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+    assert_equal 1, developer.projects.size
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+    assert_equal developer, project.developers.find(:first)
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+    assert_equal project, developer.projects.find(:first)
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+  end
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 end