Return the last record in a One to many Eloquent Relation using Laravel

You can use first() instead of get(). So it'll get a single model instance. get() method give a collection and first() method give you a single model instance.

User::with(
          $this->particulars()
        )->orderBy('id', 'desc')->first()

Or you can use latest() to get the last inserted record.

User::with(
          $this->particulars()
        )->latest()->first()

->latest() fetches the most recent set of data from the Database. In short, it sorts the data fetched, using the created_at column to chronologically order the data.

Edit:-

As you wanted to get the last record of the relationship you can do as below.

User::with('ejob', function($query) {
    return $query->latest()->first();
})->get();

// in your case

public function currentJob()
{
   return $this->hasOne(Ejob::class, ...)->latestOfMany();
   // order by by how ever you need it ordered to get the latest
}

// another example 

public function latestPerformance()
{
    return $this->hasOne(Performance::class)->latestOfMany();
}

You could define another relationship method for the same relationship but define it as a Has One instead of a Has Many:

public function currentJob()
{
   return $this->hasOne(Ejob::class, ...)->latest();
   // order by by how ever you need it ordered to get the latest
}

Then you could eager load that instead of the ejob relationship where needed.