Table hasOne relation not being created - laravel-5.3

Question

I have a tables table with the model defined like so:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Table extends Model
{
public function location()
{
return $this->hasOne('App\Location');
}
}
And I have a locations table with a table_id column, and the model defined like so:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Location extends Model
{
public function table()
{
return $this->belongsTo('App\Table');
}
}
I have seeded the database with a sample location, which has an id of 1. Inside my controller, inside a DB::transaction block, I run the following code:
$table = new Table;
$location = Location::findOrFail(1);
$table->location()->save($location);
$table->saveOrFail();
This code runs without error, however, when I look at the database, the table_id column for my location is still empty. What am I doing wrong?
I have also tried the following, to no avail:
$table = new Table;
$location = Location::findOrFail(1);
$table->saveOrFail();
$location->table()->associate($table);
Only the following seems to work:
$table = new Table;
$table->save();
$location = Location::findOrFail(1);
$location->table_id = $table->id;
$location->save();

Answer 1

You are doing it the opposite way. Try the following:
$table = new Table;
$location = Location::findOrFail(1);
$location->table()->associate($table);
$location->save();
What you really need to do is associate the foreign key of the instance to a new object, and the foreign key is in the Location model.