Execute an SQL statement each time DB connection is set up

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

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

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