Sqlite adapter's copy_table incorrectly attempts to recreate a primary key id (:id => true in the create_table) if an :id column is present, even if it isn't a primary_key.

This fix sets :id => false if there is an :id column, but it's not the primary_key.

Signed-off-by: Michael Koziarski <michael@koziarski.com>
[#1766 state:committed]

Author: jdunphy

activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb

@@ -306,7 +306,7 @@ def move_table(from, to, options = {}, &block) #:nodoc:
         end
 
         def copy_table(from, to, options = {}) #:nodoc:
-          options = options.merge(:id => !columns(from).detect{|c| c.name == 'id'}.nil?)
+          options = options.merge(:id => (!columns(from).detect{|c| c.name == 'id'}.nil? && 'id' == primary_key(from).to_s))
           create_table(to, options) do |definition|
             @definition = definition
             columns(from).each do |column|

activerecord/test/cases/copy_table_test_sqlite.rb

@@ -46,6 +46,17 @@ def test_copy_table_without_primary_key
     test_copy_table('developers_projects', 'programmers_projects')
   end
 
+  def test_copy_table_with_id_col_that_is_not_primary_key
+    test_copy_table('goofy_string_id', 'goofy_string_id2') do |from, to, options|
+      original_id = @connection.columns('goofy_string_id').detect{|col| col.name == 'id' }
+      copied_id = @connection.columns('goofy_string_id2').detect{|col| col.name == 'id' }
+      assert_equal original_id.type, copied_id.type
+      assert_equal original_id.sql_type, copied_id.sql_type
+      assert_equal original_id.limit, copied_id.limit
+      assert_equal original_id.primary, copied_id.primary
+    end
+  end
+
 protected
   def copy_table(from, to, options = {})
     @connection.copy_table(from, to, {:temporary => true}.merge(options))

activerecord/test/schema/schema.rb

@@ -154,6 +154,11 @@ def create_table(*args, &block)
     t.string :name
   end
 
+  create_table :goofy_string_id, :force => true, :id => false do |t|
+    t.string :id, :null => false
+    t.string :info
+  end
+
   create_table :items, :force => true do |t|
     t.column :name, :integer
   end