Managing polymorphic relationships with relationManager

#1

I have 3 models with a polymorphic relationship set up.

// Group.php
public $morphedByMany = [
    'courses' => [Course::class, 'name' => 'groupable'],
    'nvqs' => [Nvq::class, 'name' => 'groupable']
];

// Course.php
public $morphToMany = [
    'groups' => [Group::class, 'name' => 'groupable']
];

// Nvq.php
public $morphToMany = [
    'groups' => [Group::class, 'name' => 'groupable']
];

In the past I’ve configured separate relation managers for each “Groupable” type. like this

# groups/config_relation.yaml
courses:
  label: Courses
  manage:
    list: models/course/columns.yaml
  view:
    list: models/course/columns.yaml
nvqs:
  label: NVQs
  manage:
    list: models/nvq/columns.yaml
  view:
    list: models/nvq/columns.yaml

# group/fields.yaml
courses:
  type: partial
  path: courses.htm
nvqs:
  type: partial
  path: nvqs.htm

# group/_courses.htm
<?=$this->relationRender('courses');

# group/_nvqs.htm
<?=$this->relationRender('nvqs');

I’d like to use the relation manager to add Courses and NVQs to a Group at the same time if it’s possible. Ideally with the option of adding a “sort_order” value to the pivot table.

Can this be achieved with the relationManager? Or should I be looking at creating something custom?

I feel like if it’s possible I need a “groupable” model - but I’m unsure whether this is the right way to go?

Can anyone point me in the right direction?