Question

所以我现在正试图在Doctrine / Symfony中找到一个列的SUM。

目前我有这样的用户以嵌入的形式输入产品（带有与Product（1-m-1）相关联的嵌入式'ProductRecipe'的配方''ProductRecipe.Amount * Product.Unitcost = Productcost'，其工作正常。现在我需要通过为每个食谱添加所有'Productcost'来计算'Recipe.recipecost'并将其存储在Recipecost的'Recipe'表中。

我尝试过这个例子http://docs.doctrine-project.org/en/2.1/cookbook/aggregate-fields.html但是终生不能让它发挥作用。我尝试的一切都会引发错误。尝试过预先坚持，坚持，进入和进入。尝试添加新配方时出现的当前错误是：

 An exception occurred while executing 'INSERT INTO Recipe (recipename, 
recipedesc, recipeyeild, recipecost, created_at, updated_at, u_id) VALUES 
(?, ?, ?, ?, ?, ?, ?)' with params ["test cost", "test", 1, null, 
"2014-03-22 17:04:56", null, 3]:

 SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'recipecost' 
 cannot be null

很明显，要么计算foreach.productcost要么在持久化之前没有运行，要么根本没有运行。后者是我感觉正在发生的事情，因为即使在尝试运行它之前预先存在它仍然会带来同样的错误。

我目前拥有的是：

//配方实体

class Recipe
{
    private $id;
    private $recipecost;
    protected $product;

    public function __construct()
{
    $this->product = new \Doctrine\Common\Collections\ArrayCollection();
}
public function setRecipecost($recipecost)
{
    $this->recipecost = $recipecost;
    return $this;
}

public function getRecipecost()
{
    $recipecost = null; // note to self try 0
    foreach($this->product AS $productcost){
    $recipecost += $productcost->getProduct(); //note to self try getProductcost
    }
    return $this->recipecost;
}

// ProductRecipe Entity

class ProductRecipe
{
    private $id;
    private $amount;
    private $product;
    private $recipe;
    private $productcost;

    public function setProductcost($productcost) {
       $this->productcost = $productcost;
       return $this;
    }
    public function getProductcost() {
      return $this->productcost;
    }
public function __construct($productcost= 0, $product= '') {
    $this->productcost = $productcost;
    $this->product = $product;
    }

 //This function turns Costunit(from Product table) to Productcost. 
    /**
 * @ORM\PrePersist
 */
public function pc2amc() {
    $am = $this->amount;
    $cu = $this->product->getCostunit();
    $productcost = $am * $cu;
    $this->productcost = $productcost;
}

我希望我已经覆盖了所有内容，已经删除了我认为无关的大部分代码。如果需要，很乐意发布更多内容。

Answer 1

解决了我的问题，

此功能：

public function getRecipecost()
{
  $recipecost = 0;
  foreach($this->product AS $productcost){
  $recipecost += $productcost->getProductcost();
}
  return $this->recipecost;
}

应该是这样的：

public function setRecipecost() //Set not Get to store in DB
{
    // $recipecost = 0; **Remove this line**
    foreach($this->product AS $productcost){
        $this->recipecost += $productcost->getProductcost(); //$recipecost now $this->recipecost.
    }
    return $this->recipecost;
}

和Recipe控制器：

    public function createAction(Request $request)
{
    $entity = new Recipe();
    $product = new ProductRecipe(); //* Add this line *
    $entity->getProduct()->add($product); //* Add this line *
    $form = $this->createCreateForm($entity);
    $form->handleRequest($request);



    if ($form->isValid()) {
        $em = $this->getDoctrine()->getManager();
        $entity->setUser($this->get('security.context')->getToken()->getUser());

        $em->persist($product); //* Add this line *
        $em->persist($entity);
        $em->flush();

现在是一个梦想，希望这对同一个洞中的任何人都有用。

列的总和 - Doctrine2 / Symfony2

1 个答案: