How to get the username through an id in Laravel?

I am trying to create an offers forum, where some user can create their offers in order to provide their services and I want to show the name of the person that created that offer instead of the id.

In my database I have the two tables:

• Offers table:
  

• User table:

In offers I have a column of the professor_id, that is related to the id of users table.

This is what i have in my controller to show the offers:

public function ofertes(){

    $ofertes = Oferta::all()->sortByDesc('id');

    return view('create.ofertes')->with(compact('ofertes'));
}

and in the blade.php I have that code:

@foreach($ofertes as $oferta)
    <tr>
        <td>Nom : {{$oferta->professor_id}}</td> <br>
        <td>Títol : {{$oferta->titol}}</td> <br>
        <td>Descripció: {{$oferta->descripcio}}</td> <br>
        <td>Data: {{$oferta->created_at}}</td> <br><br>
    </tr>
@endforeach

and that is what is shown:

Where it says nom, how I can show the name instead of the id?

Thank you!

Answer

If you have specified the relationship to professor in your Oferta model you can use the following code:

public function ofertes(){

    $ofertes = Oferta::with('professor')->latest()->get();

    return view('create.ofertes')->with(compact('ofertes'));
}

Your blade:

@foreach($ofertes as $oferta)
    <tr>
        <td>Nom : {{$oferta->professor->nom}}</td> <br>
        <td>Títol : {{$oferta->titol}}</td> <br>
        <td>Descripció: {{$oferta->descripcio}}</td> <br>
        <td>Data: {{$oferta->created_at}}</td> <br><br>
    </tr>
@endforeach

If you haven’t specified the relation you should add the following method to your Oferta model (you might need to tweak this a little bit based on your namespaces):

public function professor()
{
    return $this->belongsTo(User::class);
}