Problem accessing a One to Many interface in Laravel

Question

My Product model has the following relationship:

public function categoria(){
    return $this->belongsTo('estoque\Categoria');
}

and my Category model has:

public function produtos(){
        return $this->hasMany('estoque\Produto');
}

When trying to access the view:

<td> {{$p->categoria}} <td>

Call me back :

{"id":1,"nome":"Cerveja","descricao":"Todas cervejas","ativo":1,"created_at":"2015-10-24 13:53:14","updated_at":"2015-10-24 13:53:14"}

But I only need the category name, so I’m trying to access it like this:

<td> {{$p->categoria->nome}} <td>

But generates the following error:

Trying to get property of non-object

According to the documentation on the website of Lavael, I could use {{$p->categoria->nome}}, but I can’t. Any idea?

Answer 1

Rafael, by the return you show me you Not Selected the field related to the relationship, if you used the function select.

The problem is that Laravel 4 can’t relate items internally when you don’t select them.

So if you’re doing a select similar to that:

User::select('nome', 'email')->with('role')->get();

You should do this (add the relationship key between models):

User::select('nome', 'email', 'role_id')->with('role')->get();

Every time I’ve had problems like this, this is how I solved.

Answer 2

You need to set the foreign key in the relationship, so it stays like this:

public function categoria(){
    return $this->belongsTo('estoque\Categoria', 'categoria_id');
}

So just access as an object:

<td> {{$p->categoria->nome}} <td>

I asked on the Soen: link