如何按列名搜索实体中的值？

Question

我试图在我的 table 行中按列名称查找一个值：

$entity = $this->getDoctrine()->getRepository($EntityName)->findOneBy(['uuid' => $uuid]);
$result = $entity->getCat();

困难在于，我希望能够用变量替换 "Cat"。

不幸的是，这是不可能的：

$myvariable = "Cat";
$result = $entity->'get'.$myvariable.();

所以我采用了另一种方法：

$entity = $this->getDoctrine()->getRepository($EntityName)->findBy(array('uuid' => $uuid));
$result = array_search($myvariable, $entity);

但是这里我得到一个空输出。

另一种方法：

 foreach ($entity as $key => $value) {
     if($myvariable == $key){
            $result = $value;
     }
  }

这里的错误信息是：

An exception has been thrown during the rendering of a template ("Catchable Fatal Error: Object of class App\Entity\Documents could not be converted to string").

我只是很难找到实现我想要的目标的正确方法。

Answer 1

你可以试着用反射来做到这一点。这里简单的例子

<?php

class ClassName
{

    private $property1;
    private $property2;

    public function __construct($property1, $property2)
    {
        $this->property1 = $property1;
        $this->property2 = $property2;
    }

    public function getProperty1()
    {
        return $this->property1;
    }

    public function getProperty2()
    {
        return $this->property2;
    }
}


$class = new ClassName('test1', 'test2');

$field = 'property2';

$reflectionClass = new \ReflectionClass($class);

if ($reflectionClass->hasProperty($field)) {
    $property = $reflectionClass->getProperty($field);
    $property->setAccessible(true);
    echo $property->getValue($class);
}

// or

echo $class->{sprintf('get%s', ucfirst($field))}();

Answer 2

尝试使用 variable function:

$myvariable = "getCat";
$result = $entity->$myvariable();

如何按列名搜索实体中的值？

How can I search for value in entity by column name?

arrays

variables

entity

object

symfony