Laravel recursive where for recursive relationship - laravel

Question

I have a table hobbies like this:
-id
-name
-parent_id
and my model
public function sub_hobbies(){
return $this->hasMany(Hobbies::class, 'parent_id');
}
public function parent_hobbies(){
return $this->belongsTo(Hobbies::class, 'parent_id');
}
public function allsub(){
return $this->sub_hobbies()->with('allsub');
}
public function allparent(){
return $this->parent_hobbies()->with('allparent');
}
What i want is to get all hobbies which are not child or grand child of given hobbies
example i have this list:
-hobbies 1
-hobbies 11
-hobbies 12
-hobbies 121
-hobbies 122
-hobbies 13
-hobbies 2
-hobbies 21
-hobbies 22
-hobbies 221
-hobbies 222
-hobbies 23
-hobbies 3
-hobbies 31
-hobbies 32
-hobbies 321
-hobbies 322
-hobbies 33
if i give id of hobbies 1, i want all hobbies except hobbies 11, 12, 121, 122, 13

Answer 1

So i found a little way to make run what i want to do but i don't know if it's the right way:
// get hobbies and exlude given hobbies and his child line
public function scopeIsNotLine($query, $id){
// get all hobbies to exclude by id and his child line
$hobbies = Hobbies::with('allsub')->where('id', $id)->get()->toArray();
// transform result to array of id of hobbies to exclude
$exclude = collect($this->flatten($hobbies))->map(function ($item) {
return collect($item)
->only(['id'])
->all();
})->flatten()->all();
// get hobbies where id not in exluded hobbies
return $query->whereNotIn('id', $exclude)->whereDoesntHave('is_archive');
}
// transform nested result to simple array without nest hierarchie
private function flatten($array) {
$result = [];
foreach ($array as $item) {
if (is_array($item)) {
$result[] = array_filter($item, function($array) {
return ! is_array($array);
});
$result = array_merge($result, $this->flatten($item));
}
}
return array_filter($result);
}
Firts i retrieve the hobbies selected with his all child and grand child
Second, i transform the result into flatten array (list all without nested relationship) with the function flatten that i created
Third i transform again into array of id
Fourth i use this array in whereNotIn to retrieve all hobbies and exclude the hobbies selected and his child line
Fifth i used my scope like Hobbies::isNotLine('the-id-selected')->get();
In result i got all hobbies excluding the hobbies i selected, and his child and grand child