Use Left Join in second level in contain

Need Help
1

I have in contain

[...]->contain( ['Areas','Materias','Usuarios',
                            'Materias.Cursos',
                            'Materias.Cursos.Universidades']);

produce sql:

  LEFT JOIN areas Areas ON Areas.id = (Pedidos.area_id) 
  LEFT JOIN materias Materias ON Materias.id = (Pedidos.materia_id) 
  INNER JOIN cursos Cursos ON Cursos.id = (Materias.curso_id) 
  INNER JOIN universidades Universidades ON Universidades.id = (Cursos.universidade_id) 
  INNER JOIN usuarios Usuarios ON Usuarios.id = (Pedidos.usuario_id)

note the second level of JOIN is using inner,
I need to change by LEFT JOIN.

hope:

  LEFT JOIN areas Areas ON Areas.id = (Pedidos.area_id) 
  LEFT JOIN materias Materias ON Materias.id = (Pedidos.materia_id) 
  LEFT JOIN cursos Cursos ON Cursos.id = (Materias.curso_id) 
  LEFT JOIN universidades Universidades ON Universidades.id = (Cursos.universidade_id) 
  INNER JOIN usuarios Usuarios ON Usuarios.id = (Pedidos.usuario_id)
2

This is set in the joinType option in your associations.
Have a look at MateriasTable and make sure the association looks like this:

$this->belongsTo('Cursos', [
    'foreignKey' => 'curso_id',
    'joinType' => 'LEFT'
]);

Doc: http://book.cakephp.org/3.0/en/orm/associations.html#belongsto-associations

3

yeeees! Tanks man.
I tried to look at the query, but really much more simple look at the table config.

Ty by.