From c61eebd64e579b196678e79dfbc3285de61d3923 Mon Sep 17 00:00:00 2001
From: Carlos Antonio da Silva <carlosantoniodasilva@gmail.com>
Date: Sun, 4 May 2014 10:56:27 -0300
Subject: Simplify building options hash in rename column method for mysql

---
 .../connection_adapters/abstract_mysql_adapter.rb             | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 16e048423f..4184fad81c 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -711,12 +711,13 @@ module ActiveRecord
       end
 
       def rename_column_sql(table_name, column_name, new_column_name)
-        options = { name: new_column_name }
         column  = column_for(table_name, column_name)
-
-        options[:default] = column.default
-        options[:null] = column.null
-        options[:auto_increment] = column.extra == "auto_increment"
+        options = {
+          name: new_column_name,
+          default: column.default,
+          null: column.null,
+          auto_increment: column.extra == "auto_increment"
+        }
 
         current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'", 'SCHEMA')["Type"]
         schema_creation.accept ChangeColumnDefinition.new column, current_type, options
-- 
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