按共同属性对多个不同实体进行排序

Question

使用 Symfony 5.4.17。 Symfony 新手。

我有三个相似的实体类型，想要返回一个名为

Food

的数组，我可以在树枝模板中循环它，如下所示：

    {% for food in foodArr %}
    <div class = 'border p-3 mb-3'>
        <a href="/food/show/{{get_class(food)}}/{{food.id}}">View</a>
        <p>Food Name: {{food.Description}}</p>
        <p>Food Id: {{food.id}}</p>
        <p>Date: {{food.Date|date('m-d-Y')}}</p>
        <a href="/food/delete/{{get_class(food)}}/{{food.id}}">Delete?</a>
    </div>
    {% endfor %}

这是控制器中的代码。请注意，我获取了与当前用户相关的每个食物类型对象，并且暂时将它们放入数组中。

$menustatFoodRepo = $this->em->getRepository(MenustatFood::class);
$usdaBrandedFoodRepo = $this->em->getRepository(UsdaBrandedFood::class);
$usdaNonBrandedFoodRepo = $this->em->getRepository(UsdaNonBrandedFood::class);

$menustatFoods= $menustatFoodRepo->findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);
$usdaBrandedFoods = $usdaBrandedFoodRepo -> findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);
$usdaNonBrandedFoods = $usdaNonBrandedFoodRepo -> findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);

$foodArr = array();
// add all foods to array
array_push($foodArr,$menustatFoods,$usdaBrandedFoods,$usdaNonBrandedFoods);

如何将按

Date

排序的这三种实体类型存储为可渲染格式？这个想法是拥有一个已按日期排序的可循环数组，其中包含三种类型中的任何一种。

Answer 1

在@Cerad的帮助下，我做出了答案：

控制器中的排序功能：

function date_sort($objA,$objB){
    if($objA->getDate() == $objB->getDate()) return 0;
    return ($objA->getDate() < $objB->getDate()) ? -1:1;
}

控制器视图：

$menustatFoodRepo = $this->em->getRepository(MenustatFood::class);
$usdaBrandedFoodRepo = $this->em->getRepository(UsdaBrandedFood::class);
$usdaNonBrandedFoodRepo = $this->em->getRepository(UsdaNonBrandedFood::class);

$menustatFoods= $menustatFoodRepo->findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);
$usdaBrandedFoods = $usdaBrandedFoodRepo -> findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);
$usdaNonBrandedFoods = $usdaNonBrandedFoodRepo -> findBy(
    ['User' => $this->getUser()],
    ['Date' => 'ASC']
);

$foodArr = array_merge($menustatFoods,$usdaBrandedFoods,$usdaNonBrandedFoods);
// add all foods to array

usort($foodArr,array($this,"date_sort"));