Getting array of related IDs from a belongsToMany relation - Laravel 5.4

Question

I had this solution working well in Laravel 5.3

$procedure = Procedure::findOrFail($id);

$attached_stages = $procedure->stages()->getRelatedIds()->toArray();

In my

Procedure

model:

public function stages()

{



    return $this->belongsToMany('App\Models\Stage', 'procedure_stage', 'procedure_id', 'stage_id')->withPivot('id','status')->withTimestamps();

}

Now, after migrating to Laravel 5.4, I get this error:

Call to undefined method Illuminate\Database\Query\Builder::getRelatedIds()

Seems that the

getRelatedIds

has been removed.

My question:

how to get the array in 5.4?

Thank you in advance.

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Answer 1

to get ids array you can use pluck function

$procedure->stages()->pluck('stages.id')->toArray();

Getting array of related IDs from a belongsToMany relation - Laravel 5.4

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