Laravel 8：试图获取非对象错误的属性“名称”

Question

I'm working with Laravel 8 to develop my Forum project. So I created a table called answers , and here is the Migration for that:

public function up()
    {
        Schema::create('answers', function (Blueprint $table) {
            $table->id();
            $table->text('answer');
            $table->foreignId('user_id')->constrained()->onDelete('cascade');
            $table->foreignId('question_id')->constrained()->onDelete('cascade');
            $table->timestamps();
        });
    }

And then in order to make relation between Question Model & Answer Model, I added these:

Question.php:

public function answers()
    {
        return $this->hasMany(Answer::class);
    }

User.php:

public function answers()
    {
        return $this->hasMany(Answer::class);
    }

After that, I added this for showing the question information:

@foreach($show->answers as $ans)
<table class="table table-striped table-bordered table-responsive-lg">
    <thead class="thead-light">
        <tr>
            <th scope="col"></th>
            <th scope="col">Answer</th>
        </tr>
    </thead>
    <tbody>
        <tr></tr>
        <tr>
            <td style="text-align:right">
                <div><span>Writer: </span><a href="">{{ $ans->id->name }}</a></div>
            </td>
            <td style="text-align:right">
                <p>
                    {{ $ans->answer }}
                </p>
            </td>
        </tr>
    </tbody>
</table>
 @endforeach

But now I get this error:

ErrorException Trying to get property 'name' of non-object

So what is going wrong here? How can I properly return the name of user who asked a question?

I would really appreciate if you share any idea or suggestion about this,

Thanks.

UPDATE #1:

UPDATE #2:

class Answer extends Model
{
    protected $fillable = ['answer', 'user_id', 'question_id'];

}

Answer 1

you should build the relation between Answer an User models in Answer model:

class Answer extends Model
{
    protected $fillable = ['answer', 'user_id', 'question_id'];

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

  public function question()
    {
        return $this->belongsTo(Question::class);
    }
}

and in your blade, assuming that the $ans is an instance of Answer model, you can use:

{{ $ans->user->name }}

Answer 2

$table->foreign('user_id')->references('id')->on('users')->constrained()->onDelete('cascade');

$table->foreign('question_id')->references('id')->on('questions')->constrained()->onDelete('cascade');