Merge pull request #23593 from meinac/add_index_option_for_change_table

index option added for change_table migrations

activerecord/CHANGELOG.md

@@ -1,3 +1,15 @@
+*   Added `index` option for `change_table` migration helpers.
+    With this change you can create indexes while adding new
+    columns into the existing tables.
+
+    Example:
+
+        change_table(:languages) do |t|
+          t.string :country_code, index: true
+        end
+
+    *Mehmet Emin İNAÇ*
+
 *   Fix `transaction` reverting for migrations.
 
     Before: Commands inside a `transaction` in a reverted migration ran uninverted.

activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb

@@ -527,7 +527,9 @@ module ActiveRecord
       #
       # See TableDefinition#column for details of the options you can use.
       def column(column_name, type, options = {})
+        index_options = options.delete(:index)
         @base.add_column(name, column_name, type, options)
+        index(column_name, index_options.is_a?(Hash) ? index_options : {}) if index_options
       end
 
       # Checks to see if a column exists.

activerecord/test/cases/migration/change_table_test.rb

@@ -164,6 +164,14 @@ module ActiveRecord
         end
       end
 
+      def test_column_creates_column_with_index
+        with_change_table do |t|
+          @connection.expect :add_column, nil, [:delete_me, :bar, :integer, {}]
+          @connection.expect :add_index, nil, [:delete_me, :bar, {}]
+          t.column :bar, :integer, index: true
+        end
+      end
+
       def test_index_creates_index
         with_change_table do |t|
           @connection.expect :add_index, nil, [:delete_me, :bar, {}]