I’d like to ask something. I have messages and I have countries. I do
searches of messages by country. So a country has_many messages and
message belongs_to country.
I have defined a country_id on the messages country.
Is there a quick way to find how many messages belong to a country
without going through the messages find? I thought of adding a counter
to the country table and increase/decrease when a message for that
country is handled. Is this the right approach?