Laravel eloquent how to order collection by accessor in appends array

Question

I have following Eloquent model:

class Song extends Eloquent {

protected $table = \'mg_songs\';
protected $hidden = array(\'events\');
protected $appends =          


        

Answer 1

You can sort the resulting collection by accessor, obviously the query can't be ordered, for it's not in the db.

$songs = Song::all(); // get the result
$songs->sortByDesc('lastDate'); // sort using collection method

// or ascending:
$songs->sortBy('lastDate');

You could achieve the same using joins, if you prefer to do this in the db call (it's better in terms of performance).

---

Another thing: you use if( ! $this->events) which will cause trouble soon.

Check this out:

// hasOne / belongsTo / morphTo etc - single relations
$model->relation; // returns related model OR null -> evaluates to false

// BUT for hasMany / belongsToMany etc - multiple results
$model->relation; // always returns a collection, even if empty, evaluates to true

So change this if to:

public function getLastDateAttribute()
{
    if ( ! count($this->events)) return null;

    return $this->events[0]->date->formatLocalized('%d.%m.%Y (%a, %Hч)');
}}