From 3e92806357543cdbabad813884a591fca69193c2 Mon Sep 17 00:00:00 2001 From: Aaron Patterson Date: Thu, 20 Nov 2014 17:37:54 -0800 Subject: raise a better exception for renaming long indexes --- .../connection_adapters/abstract/schema_statements.rb | 3 +++ .../connection_adapters/postgresql/schema_statements.rb | 3 +++ activerecord/test/cases/migration/index_test.rb | 14 ++++++++++++++ 3 files changed, 20 insertions(+) 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 7cc5e666af..99fa9b7d29 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -571,6 +571,9 @@ module ActiveRecord # rename_index :people, 'index_people_on_last_name', 'index_users_on_last_name' # def rename_index(table_name, old_name, new_name) + if new_name.length > allowed_index_name_length + raise ArgumentError, "Index name '#{new_name}' on table '#{table_name}' is too long; the limit is #{allowed_index_name_length} characters" + end # this is a naive implementation; some DBs may support this more efficiently (Postgres, for instance) old_index_def = indexes(table_name).detect { |i| i.name == old_name } return unless old_index_def diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb index 51853c6812..b4b066c06e 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -478,6 +478,9 @@ module ActiveRecord end def rename_index(table_name, old_name, new_name) + if new_name.length > allowed_index_name_length + raise ArgumentError, "Index name '#{new_name}' on table '#{table_name}' is too long; the limit is #{allowed_index_name_length} characters" + end execute "ALTER INDEX #{quote_column_name(old_name)} RENAME TO #{quote_table_name(new_name)}" end diff --git a/activerecord/test/cases/migration/index_test.rb b/activerecord/test/cases/migration/index_test.rb index ac932378fd..b23b9a679f 100644 --- a/activerecord/test/cases/migration/index_test.rb +++ b/activerecord/test/cases/migration/index_test.rb @@ -36,6 +36,20 @@ module ActiveRecord assert connection.index_name_exists?(table_name, 'new_idx', true) end + def test_rename_index_too_long + too_long_index_name = good_index_name + 'x' + # keep the names short to make Oracle and similar behave + connection.add_index(table_name, [:foo], :name => 'old_idx') + e = assert_raises(ArgumentError) { + connection.rename_index(table_name, 'old_idx', too_long_index_name) + } + assert_match(/too long; the limit is #{connection.allowed_index_name_length} characters/, e.message) + + # if the adapter doesn't support the indexes call, pick defaults that let the test pass + assert connection.index_name_exists?(table_name, 'old_idx', false) + end + + def test_double_add_index connection.add_index(table_name, [:foo], :name => 'some_idx') assert_raises(ArgumentError) { -- cgit v1.2.3