Laravel5.5-How to use morph to query different fields of different tables according to type

In Laravel 5.5，I have three tables.

posts
id - integer
name - string

users
id - integer
nickname - string

images
id - integer
url - string
imageable_id - integer
imageable_type - string

Then we add the morphTo association to the images model.

public function imageable()
{
    return $this->morphTo();
}

Problem:

Images::with(['imageable:id,name'])->get();

A problem found in the above use process is that when we design the table, the fields in posts and users are different, then there will be a requirement to judge in with whether the source of the table is posts or users to query different The table fields have the desired effect.

Similar to whereHasMorph:

Images::whereHasMorph(
    'imageable',
    [Users::class, Posts::class],
    function (Builder $query, $type) {
        if ($type === Users::class) {
            $query->selectRaw("id,nickname");
        } elseif ($type === Posts::class) {
            $query->selectRaw("id,name");
        }
    }
);

At present, no effective way has been found to achieve this purpose. The only one that can be achieved is as follows.

$imageUsers = images::with([
    'imageable' => function ($query) {
        $query->selectRaw("id,nickname");
    }
])->where('imageable_type', 'App\Users')->get();

$imagePosts = images::with([
    'imageable' => function ($query) {
        $query->selectRaw("id,name");
    }
])->where('imageable_type', 'App\Posts')->get();

So, My question is how to determine whether the source of the table is posts or users in with to query different table fields to achieve the desired effect.

via Chebli Mohamed