From 5e4c22dfbb6dad676f74ded50b8c2536834a46a7 Mon Sep 17 00:00:00 2001 From: Mehmet Emin INAC Date: Sat, 22 Sep 2018 16:47:57 +0200 Subject: Index option added for change_table migrations In case if we want to add a column into the existing table with index on it, we have to add column and index in two seperate lines. With this feature we don't need to write an extra line to add index for column. We can just use `index` option. Old behaviour in action: ``` change_table(:languages) do |t| t.string :country_code t.index: :country_code end ``` New behaviour in action: ``` change_table(:languages) do |t| t.string :country_code, index: true end ``` Exactly same behaviour is already exist for `create_table` migrations. --- activerecord/CHANGELOG.md | 12 ++++++++++++ .../connection_adapters/abstract/schema_definitions.rb | 2 ++ activerecord/test/cases/migration/change_table_test.rb | 8 ++++++++ 3 files changed, 22 insertions(+) (limited to 'activerecord') diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index cfc5647969..8bdcdbda9b 100644 --- a/activerecord/CHANGELOG.md +++ b/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* + * Don't update counter cache unless the record is actually saved. Fixes #31493, #33113, #33117. diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb index 582ac516c7..015204c056 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/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. diff --git a/activerecord/test/cases/migration/change_table_test.rb b/activerecord/test/cases/migration/change_table_test.rb index 034bf32165..c108d372d1 100644 --- a/activerecord/test/cases/migration/change_table_test.rb +++ b/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, {}] -- cgit v1.2.3