在laravel 5.4中将空值转换为空字符串 [英] convert null values into empty string in laravel 5.4

问题描述

我想将使用过 array_walk_recursive 的空字符串转换为所有null，但是我还没有想要的东西，请帮助我找出我在这里做错的地方.

I want to convert all null with empty string I have used array_walk_recursive but I haven't got what I want please help me to figure it out what I have done wrong here.

protected function setData($key, $value)
{
    $this->data[$key] = $value;
    array_walk_recursive($this->data, function (&$item, $key) {
        $item = null === $item ? '' : $item;
    });
    return $this->data;
}

推荐答案

好吧，这只是雄辩的灯错误，我们总是在雄辩的对象中得到结果，这里我在 array_walk_recursive 内部传递雄辩的对象所以在传递之前，我需要像这样在laravel中使用-> toArray()方法将雄辩的对象转换为数组.

well, that's just a lamp mistake in eloquent we always get result in eloquent object and here I'm passing eloquent object inside array_walk_recursive so before passing I need to convert into array from eloquent object using ->toArray() method in laravel like this.

内部用户控制器

$this->setData("friendList", $loadFriends->friends->toArray());

然后 array_walk_recursive 将起作用.

protected function setData($key, $value)
{
    array_walk_recursive($value, function (&$item, $key) {
        $item = null === $item ? '' : $item;
    });
    $this->data[$key] = $value;
    return $this->data;
}

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