How to OrderBy on OneToMany/ManyToOne - symfony

Question

I have a Product class that has many fields on it for ManyToMany, such as ingredients, sizes, species, etc.. A total of about 14 different fields
Not all of the fields are are relevant to each product.
I have mapping set up like this
Class product {
/**
* #var Species[]
* #ORM\ManyToMany(targetEntity="Species")
* #ORM\JoinTable(name="product_species",
* joinColumns={#ORM\JoinColumn(name="productId", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="speciesId", referencedColumnName="id")}
* )
* #ORM\OrderBy({"name" = "asc"})
*/
private $species;
This works great for a manytomany/manyto one.
The problem is in my product_ingredients table I needed to add an additional field, meaning need to switch from ManyToMany to a OneToMany/ManyToOne
So like this
/**
* #var ProductIngredient[]
*
* #ORM\OneToMany(targetEntity="ProductIngredient", mappedBy="product")
* #ORM\JoinColumn(name="productId", referencedColumnName="id")
*/
private $ingredients;
Now my ProductIngredient Entity Looks like this
/**
* #var IngredientType
* #ORM\ManyToOne(targetEntity="IngredientType", fetch="EAGER")
* #ORM\JoinColumn(name="ingredientTypeId", referencedColumnName="id")
*/
private $ingredientType;
/**
* #var Ingredient
*
* #ORM\ManyToOne(targetEntity="Ingredient", inversedBy="products", fetch="EAGER")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="ingredientId", referencedColumnName="id")
* })
*/
private $ingredient;
/**
* #var Product
*
* #ORM\ManyToOne(targetEntity="Product", inversedBy="ingredients")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="productId", referencedColumnName="id")
* })
*/
private $product;
So in my product class for species I use the #ORM\OrderBy so that species is already ordered.. Is there a way I can somehow also do this for my ingredients field?
Or am I doing my logic wrong and these shouldn't even be fields on the product class and should just be looking up by the repository instead?
I was wanting it to be easy so I could loop through my objects like $product->getIngredients()
instead of doing
$ingredients = $this->getDoctrine()->getRepository('ProductIngredient')->findByProduct($product->getId());

Answer 1

in the Product entity just also aadd the orderBy to the ingredients relation
/**
* ...
* #ORM\OrderBy({"some_attribute" = "ASC", "another_attribute" = "DESC"})
*/
private $ingredients;

Answer 2

Well I came up with a hackish way.. Since I really only care about the sort on output, I have made a basic twig extension
use Doctrine\Common\Collections\Collection;
public function sort(Collection $objects, $name, $property = null)
{
$values = $objects->getValues();
usort($values, function ($a, $b) use ($name, $property) {
$name = 'get' . $name;
if ($property) {
$property = 'get' . $property;
return strcasecmp($a->$name()->$property(), $b->$name()->$property());
} else {
return strcasecmp($a->$name(), $b->$name());
}
});
return $values;
}
I would like to avoid this hack though and still would like to know a real solution

Answer 3

You should use 'query_builder' option in your Form: http://symfony.com/doc/master/reference/forms/types/entity.html#query-builder
The value of the option can be something like this:
function(EntityRepository $er) {
return $er->createQueryBuilder('i')->orderBy('i.name');
}
Don't forget to add the "use" statement for EntityRepository

Answer 4

If you use xml mapping, you could use
<order-by>
<order-by-field name="some_field" direction="ASC" />
</order-by>
inside your <one-to-many> tag.