Laravel eloquent selecting most recent row from joined table

Question

I have two tables, Project and Projectnote

There is a one to many relationship between project and projectnote.

I want to be able to list my projects and sel

Answer 1

You can join the table on the latest value:

->join('t1', function($join) {
        $join->on('t1.t2_id', '=', 't2.id')
             ->on('t1.id', '=', DB::raw("(select max(id) from t1 WHERE t1.t2_id = t2.id)"));

If you also want to join where t1 does not have a value, use a leftJoin. In your case this would look like this:

$projects = Project::leftJoin('projectnotes', function($join) { 
        $join->on('projectnotes.project_id', '=', 'projects.id')
             ->on('projectnotes.id', '=', DB::raw("(SELECT max(id) from projectnotes WHERE projectnotes.project_id = projects.id)")); 
        })
        ->select(array('projects.*', 'projectnotes.note as note'))