laravel4cookbook

API 135
1 public function setNameAttribute($value)
2 {
3 $clean = preg_replace("/\W/", "", $value);
4 $this->attributes["name"] = $clean;
5 }
6
7 public function getDescriptionAttribute()
8 {
9 return trim($this->attributes["description"]);
10 }
.
This was extracted from app/models/Event.php.
You can catch values, before they hit the database, by creating public set*Attribute() methods. These
should transform the $value in some way and commit the change to the internal $attributes array.
You can also catch values, before they are returned, by creating get*Attribute() methods.
In the case of these methods; I am removing all non-word characters from the name value, before it
hits the database; and trimming the description before it’s returned by the property accessor. Getters
are also called by the toArray() and toJson() methods which transform model instances into either
arrays or JSON strings.
You can also add attributes to models by creating accessors and mutators for them, and mentioning
them in the $appends property:
1 protected $appends = ["hasCategories", "hasSponsors"];
2
3 public function getHasCategoriesAttribute()
4 {
5 $hasCategories = $this->categories()->count() > 0;
6 return $this->attributes["hasCategories"] = $hasCategories;
7 }
8
9 public function getHasSponsorsAttribute()
10 {
11 $hasSponsors = $this->sponsors()->count() > 0;
12 return $this->attributes["hasSponsors"] = $hasSponsors;
13 }