Laravel 4.2 Eloquent event on select? - php

Question

Is there a way to add an event on select/get with eloquent ?
I only see these methods :
public function getObservableEvents()
{
return array_merge(
array(
'creating', 'created', 'updating', 'updated',
'deleting', 'deleted', 'saving', 'saved',
'restoring', 'restored',
),
$this->observables
);
}
I want to be able to change values returned by a model
I have this model :
class Fee extends Eloquent {
protected $table = 'fees';
protected $fillable = array('occ_paxs_id',
'description',
'amount',
'other',
'hstgst',
'pst',);
}
$fee = Fee::find($id); // here I want to be able to add a markup on the property amount

Answer 1

Eloquent supports custom accessors and mutators. From the vague description in your question, these will likely do what you need.
class Fee extends Eloquent
{
protected $fillable = [
'occ_paxs_id',
'description',
'amount',
'other',
'hstgst',
'pst',
];
protected $appends = [
'formatted_amount',
];
/**
* Override the default attribute accessor.
*/
public function getAmountAttribute($value)
{
return "This is the amount - {$value}";
}
/**
* Or define a custom attribute accessor.
*/
public function getFormattedAmountAttribute()
{
return "This is my formatted amount - {$this->amount}";
}
}
$fee = Fee::find($id);
echo $fee->amount; // This is the amount - 0.00
echo $fee->formatted_amount; // This is my formatted amount - 0.00

Answer 2

You can have Observers # ORM (e.g. Fee) but it only tracks the regular operations over a single ORM instance: created, creating, updated, updating, deleted, deleting and a couple more I believe.
You can use Mutator and Accessor like this to alter data before insertion and after retrieving data:
class Fee extends Eloquent {
protected $table = 'fees';
protected $fillable = array('occ_paxs_id',
'description',
'amount',
'other',
'hstgst',
'pst',);
//Mutator = before it inserts into the database, it converts $value to a lower case string
public function setAmountAttribute($value) {
$this->attributes['first_name'] = strtolower($value);
}
//Accessor - after it retrieves data from the database, it places the capital letter in UpperCase (ucfirst).
public function getAmountAttribute($value) {
return ucfirst($value);
}
}
By creating a function that starts with get and ends with Attribute, laravel finds the attribute related based on the name. You can also get non-existant attributes and apply logic to it, if needed (for example, getting a fullName of a person in the example below, meaning a variable called fullName will be returned in your ORM result with it's content):
public function getFullNameAttribute() {
return $this->attributes['first_name'] " . " $this->attributes['last_name'];
}
https://laravel.com/docs/4.2/eloquent#accessors-and-mutators

Answer 3

There is a retrieved event that was added in Laravel 5.5.
The retrieved event will fire when an existing model is retrieved from the database.
https://laravel.com/docs/5.5/eloquent#events