From fb0bf3c984fb088b5e436b25e6e5ae042e99c523 Mon Sep 17 00:00:00 2001 From: kennyj Date: Mon, 31 Oct 2011 22:53:47 +0900 Subject: Fixed an issue id false option is ignored on mysql/mysql2 (fix #3440) --- .../connection_adapters/abstract_mysql_adapter.rb | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'activerecord/lib/active_record') 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 dd573ba569..e2075225f0 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb @@ -496,8 +496,17 @@ module ActiveRecord # Returns a table's primary key and belonging sequence. def pk_and_sequence_for(table) - execute_and_free("DESCRIBE #{quote_table_name(table)}", 'SCHEMA') do |result| - keys = each_hash(result).select { |row| row[:Key] == 'PRI' }.map { |row| row[:Field] } + sql = <<-SQL + SELECT t.constraint_type, k.column_name + FROM information_schema.table_constraints t + JOIN information_schema.key_column_usage k + USING (constraint_name, table_schema, table_name) + WHERE t.table_schema = DATABASE() + AND t.table_name = '#{table}' + SQL + + execute_and_free(sql, 'SCHEMA') do |result| + keys = each_hash(result).select { |row| row[:constraint_type] == 'PRIMARY KEY' }.map { |row| row[:column_name] } keys.length == 1 ? [keys.first, nil] : nil end end -- cgit v1.2.3