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-rw-r--r--activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb6
-rw-r--r--activerecord/test/cases/primary_keys_test.rb6
-rw-r--r--activerecord/test/models/mixed_case_monkey.rb2
3 files changed, 8 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 88bf15bc18..ad069f5e53 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -120,9 +120,9 @@ module ActiveRecord
# The name of the primary key, if one is to be added automatically.
# Defaults to +id+. If <tt>:id</tt> is false this option is ignored.
#
- # Also note that this just sets the primary key in the table. You additionally
- # need to configure the primary key in the model via +self.primary_key=+.
- # Models do NOT auto-detect the primary key from their table definition.
+ # Note that Active Record models will automatically detect their
+ # primary key. This can be avoided by using +self.primary_key=+ on the model
+ # to define the key explicitly.
#
# [<tt>:options</tt>]
# Any extra options you want appended to the table definition.
diff --git a/activerecord/test/cases/primary_keys_test.rb b/activerecord/test/cases/primary_keys_test.rb
index 1b915387be..51ddd406ed 100644
--- a/activerecord/test/cases/primary_keys_test.rb
+++ b/activerecord/test/cases/primary_keys_test.rb
@@ -180,6 +180,11 @@ class PrimaryKeysTest < ActiveRecord::TestCase
assert !col1.equal?(col2)
end
end
+
+ def test_auto_detect_primary_key_from_schema
+ MixedCaseMonkey.reset_primary_key
+ assert_equal "monkeyID", MixedCaseMonkey.primary_key
+ end
end
class PrimaryKeyWithNoConnectionTest < ActiveRecord::TestCase
@@ -214,4 +219,3 @@ if current_adapter?(:MysqlAdapter, :Mysql2Adapter)
end
end
end
-
diff --git a/activerecord/test/models/mixed_case_monkey.rb b/activerecord/test/models/mixed_case_monkey.rb
index 4d37371777..1c35006665 100644
--- a/activerecord/test/models/mixed_case_monkey.rb
+++ b/activerecord/test/models/mixed_case_monkey.rb
@@ -1,5 +1,3 @@
class MixedCaseMonkey < ActiveRecord::Base
- self.primary_key = 'monkeyID'
-
belongs_to :man
end