Execute an SQL statement each time DB connection is set up

rubyonrails-talk
1

Hi everyone.

I need to execute a "SET SQL_MODE='STRICT_ALL_TABLES'" after my application's DB connection is established by AcriveRecord. This is important since I want the DB itself be more strict about logical data integrity.

Which is the proper place within application code from where I can issue this query?

Tried to make an ActiveRecord::Base.connection.execute() in an initializer, but it only runs once after server startup. At next request the connection is re-created, but initializers aren't invoked.

Alex

2

Alex Fortuna wrote:

I need to execute a "SET SQL_MODE='STRICT_ALL_TABLES'" after my application's DB connection is established by AcriveRecord. This is important since I want the DB itself be more strict about logical data integrity.

Which is the proper place within application code from where I can issue this query?

Tried to make an ActiveRecord::Base.connection.execute() in an initializer, but it only runs once after server startup. At next request the connection is re-created, but initializers aren't invoked.

In 2.2.2 there doesn't seem to be a callback when a connection is established & re-established, so try an initializer like

ActiveRecord::ConnectionAdapters::MysqlAdaptor.class_eval do    private    def connect_with_strict      connect_without_strict      execute "SET SQL_MODE='STRICT_ALL_TABLES'"    end    alias_method_chain :connect, :strict end

3

Hi Alex, STRICT_ALL_TABLES is an option that one would set on a database.

Thus, why don’t you set it when you create the database?

-Conrad