Where to define static array related to an entity in symfony2 ? - arrays

Question

I have an array contains static data related to an entity Product:
public static $category = array(
1 => 'animal.png',
2 => 'blague.png',
3 => 'devinette.png',
4 => 'enfant.png',
5 => 'h-f.png',
6 => 'nationalite.png',
7 => 'politique.png',
8 => 'sport.png',
9 => 'name',
10 => 'travail.png',
11 => 'vulgaire.png',
12 => 'autre.png',
);
Where i should declare the array ?
And how i can accede to data from the Twig view ?
Thanks

Answer 1

I don't know if that's the best way but I used something similar to your code:
class Product
{
protected static $category = array(
1 => 'animal.png',
2 => 'blague.png',
3 => 'devinette.png',
// ...
)
);
}
Then you can add some functions in this class in order to get data from the array
public function getCategoryImageFromIndex($a)
{
return self::$category[$a];
}
// if you have a getter getCategory() which returns the category of the Product
public function getCategoryImage()
{
return self::$category[$this->getCategory()];
}
Then you can call these functions from Twig:
{{ product.categoryImageFromIndex(1) }}
will display:
animal.png
And
{{ product.categoryImage }}
will display the corresponding image from the category.

Answer 2

I've always used a Twig extension function to access the static array.
For example, in my Order entity, I have something like this:
class Order
{
const ORDER_STATUS_PENDING = 0;
const ORDER_STATUS_AWAITING_PAYMENT = 1;
const ORDER_STATUS_COMPLETE = 2;
public static $ORDER_STATUS_DISPLAY = [
self::ORDER_STATUS_PENDING => 'Pending',
self::ORDER_STATUS_AWAITING_PAYMENT => 'Order placed',
self::ORDER_STATUS_COMPLETE => 'Order completed',
];
then assuming you already have a registered Twig_Extension class, create a new filter function:
public function displayOrderStatus($orderStatus)
{
return Order::$ORDER_STATUS_DISPLAY[$orderStatus];
}
Finally, use the filter in your Twig template:
{{ order.orderStatus|displayOrderStatus }}