Rails has_many association count child rows

Question

What is the \"rails way\" to efficiently grab all rows of a parent table along with a count of the number of children each row has?

I don\'t want to use counte

Answer 1

From a SQL perspective, this looks trivial - Just write up a new query.

From a Rails perspective, The values you mention are computed values. So if you use find_by_sql, the Model class would not know about the computed fields and hence would return the computed values as strings even if you manage to translate the query into Rails speak. See linked question below.
The general drift (from the responses I got to that question) was to have a separate class be responsible for the rollup / computing the desired values.

How to get rails to return SUM(columnName) attributes with right datatype instead of a string?