原则 2:查询结果为关联数组

Doctrine 2: Query result as associative array(原则 2:查询结果为关联数组)

问题描述

在我的 Repository 类中，我使用以下代码进行查询:

In my Repository class I use the following code to query:

$query = $this->getEntityManager()->createQuery("
    SELECT s.term, COUNT(s.term) AS freq
    FROM AppEntitiesSearchTerm s
    GROUP BY s.term
    ORDER BY s.term ASC
");

$result = $query->getResult();

我得到的结果是这样的:

The result I get is something like:

array (size=4)
  0 => 
    array (size=2)
      'term' => string '' (length=0)
      'freq' => string '1' (length=1)
  1 => 
    array (size=2)
      'term' => string 'foo' (length=3)
      'freq' => string '1' (length=1)
  2 => 
    array (size=2)
      'term' => string 'bar' (length=3)
      'freq' => string '2' (length=1)
  3 => 
    array (size=2)
      'term' => string 'baz' (length=3)
      'freq' => string '2' (length=1)

但我宁愿有一个关联数组作为结果:

But I would rather have an associative array as a result:

array (size=4)
  '' => string '1' (length=1)
  'foo' => string '1' (length=1)
  'bar' => string '2' (length=1)
  'baz' => string '2' (length=1)

这是否可能无需额外的 for 循环来构建所需的数组?

Is this possible without an extra for-loop to build the desired array?

推荐答案

我知道它很旧，但今天我不得不做几乎相同的事情，我的解决方案没有自定义水合器

I know its old but today I had to do almost the same, my solution without a custom hydrator

• 按 s.term 编制索引
• 修改 getResult() 以确保

喜欢

$result = $query->getQuery()->getResult(DoctrineORMAbstractQuery::HYDRATE_ARRAY);

• 格式化结果

作为

$resultNeeded = array_map(function($value) { return $value['freq']; }, $result);

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