Laravel中数据库查询构建器的位置

Question

I can use scopes to perform basic model-related queries (such as select those users who have a birthday today), scopes are obviously placed in Eloquent Models and return an instance of Eloquent Query Builder. But what if I need to perform a more complex query, say group a massive email log table by email type, join with users and emails and apply some aggregates? Since the resulting fields of the query are mixed (email, email type, user, log fields), I have to use Database Query Builder. I'm hesitating thinking of the best place for the call to the builder.

Is can be a static method in the main model where I join other tables to:

    class ConcreteModel extends Model {

      public static function someQuery(): \Illuminate\Database\Query\Builder {
        return \DB::table('some_table')->join('something');
      }

    }

Or maybe rather to place such stuff in services that need it?

Answer 1

Well I've come up with the idea of using the Visitor pattern for encapsulating complex queries. Visitor objects encapsulate concrete queries, eloquent models can accept visitors passed by the client and invoke standard methods on them passing themselves to the visitor and handing over collections of StdClasses with results from the visitor back to the client. Seems it can work out for me.