Question

我有一个中间件目录包含3个类，即OldInputMiddleware，MiddleWare和ErrorsMiddleware：

class Middleware {

protected $container;

public function __construct($container){
    $this->container = $container;
}


class OldInputMiddleware extends Middleware {

public function __invoke($request, $response, $next){

    if (isset($_SESSION['errors'])) {
        $this->container->view->getEnvironment()->addGlobal('old', $_SESSION['old']);
        $_SESSION['old'] = $request->getParams();
    }

    //always return response with the next occurring
    // request and response
    $response = $next($request, $response);
    return $response;
}

ErrorsMiddleware类似于我在OldInputMiddleware中所拥有的，但它在检索后取消了会话变量，并且在我的signup.twig文件中：

<div class="form-group {{ errors.email ? 'has-error' : '' }}">
<label for="email">Email</label>
<input type="text" name="email" id="email" placeholder="someone@domain.com" class="form-control" value="{{ old.email }}">
{% if errors.email %}
    <span class="help-block">{{ errors.email | first }}</span>
{% endif %}

错误中间件工作正常并返回相关的错误消息，但当我尝试通过在值属性中添加twig注释来预先处理旧数据时，数据无法检索。

Answer 1

回答自己，这句话是一个愚蠢的错误：

if (isset($_SESSION['errors']))

应该是$ _SESSION ['old']而不是$ _SESSION ['errors']

Answer 2

您可以删除if语句。没必要。

您可以编写以下内容而无需if语句。

DECLARE @cardNo VARCHAR(255)

SELECT TOP (1) @cardNo = cardNo 
FROM TABLE1 INNER JOIN 
     TABLE2 
     ON TABLE1.objectid = TABLE2.carrierobjectid
ORDER BY cardNo DESC;

UPDATE A
      SET A.value = CAST(@cardNo + 1 AS varchar(300))
FROM [db].[dbo].[freefieldassignment] A 
WHERE A.[carrierobjectid] = '90465607';

无法从中间件Slim中检索旧数据

2 个答案: