Why doesn't a one-to-many relationship work?

Question

Laravel

I can't figure out what the problem is. There is a table with users. And a table with orders.
There is a user_id field in the orders table, it refers to the user id in the user table.
I write a connection in the Order Model. This is how it works (if you specify user_id)

public function userId()
{
    return $this->belongsTo('App\Models\User', 'user_id');
}

But it doesn't work that way - which is strange, because the user_id field exists in the orders table, and it complies with the rules (seemingly).

public function userId()
{
    return $this->belongsTo('App\Models\User');
}

Threat. I looked into the collection, and this is what I saw there

["foreignKey":protected]=>
    string(10) "user_id_id"

That is, for some reason Eloquent added another '_id'. What's my mistake?

Answer 1

public function user() without ID try

Answer 2

Show a one-to-many relationship in the user model, something like this should look like an entry

public function contact()
    {
        return $this->hasMany(Contact::class,'user_id','id');
    }

Where is the first name in the remote table, and at the end is the name in the users table, check if you wrote it correctly