I have a model called Book for a table called books, that has a field called cover_image.
However, I want to define an accessor for the field cover_image instead of just retrieving the default value.
This is how I attempted to do this:
class Book extends Model {
public function getCoverImageAttribute() {
if ($this->cover_image === null) { // Not sure how to check current value?
return "a.jpg"
}
return $this->cover_image;
}
}
However the above of course does not work because calling $this->cover_image again would cause recursion
How can I fix this?
You must check for the attribute instead:
class Book extends Model {
public function getCoverImageAttribute() {
return $this->attributes['cover_image'] ?? "a.jpg";
}
}
This will allow you to normally use $book->cover_image as well.
I believe the following example will also work:
class Book extends Model {
public function getCoverImageAttribute($value) {
return is_null($value) ? 'a.jpg' : $value;
}
}