Phalcon PHP致命错误：未知的异常与消息“未知的表达式”

Question

我试图按照REST应用程序教程provided by Phalcon，但我试图插入数据时仍遇到问题。我的问题是，我不知道这个错误应该是什么意思。我相信这在Phalcon中是一个错误，但我对C的知识是不存在的。让我知道我是否应该提供更多的上下文。

下面是在PHP的错误日志显示了错误：

PHP Fatal error: Uncaught exception 'Phalcon\\Mvc\\Model\\Exception' with message 'Unknown expression' in /home/acarbonaro/testApplication/index.php:84\n 
Stack trace:\n 
0 [internal function]: Phalcon\\Mvc\\Model\\Query->_getExpression(274, false)\n 
1 [internal function]: Phalcon\\Mvc\\Model\\Query->_prepareInsert()\n 
2 [internal function]: Phalcon\\Mvc\\Model\\Query->parse()\n 
3 [internal function]: Phalcon\\Mvc\\Model\\Query->execute(Array, NULL)\n 
4 /home/acarbonaro/testApplication/index.php(84): Phalcon\\Mvc\\Model\\Manager->executeQuery('INSERT INTO Pro...', Array)\n 
5 [internal function]: {closure}()\n 
6 /home/acarbonaro/testApplication/index.php(115): Phalcon\\Mvc\\Micro->handle()\n 
7 {main}\n 
    thrown in /home/acarbonaro/testApplication/index.php on line 84 

这是一个有行号的POST路线供参考的代码。

71: $app->post('/api/products', function() use ($app) { 
72:  if ($app->request->isPost() == true) { 
73:   if ($app->request->isAjax() == true) { 
74:    $product = $app->request->getJsonRawBody(); 
75:    $partNumber = $product->partNumber; 
76:   } 
77:   $partNumber = $app->request->getPost('partNumber'); 
78:  } 
79: 
80:  $phql = "INSERT INTO Products (partNumber) VALUES (:partNumber:)"; 
81:  $params = array(
82:   'partNumber' => $partNumber 
83: ); 
84:  $status = $app->modelsManager->executeQuery($phql, $params); 
85: 
86:  // Prep the response 
87:  if ($status->success() == true) { 
88:   $response->setStatusCode(201, "Created"); 
89: 
90:   $product->id = $status->getModel()->id; 
91: 
92:   $response->setJsonContent(array('status' => 'OK', 'data' => $product)); 
93:  } else { 
94:   $response->setStatusCode(409, "Conflict"); 
95: 
96:   // Send errors to the client 
97:   $errors = array(); 
98:   foreach($status->getMessages() as $message) { 
99:    $errors[] = $message->getMessage(); 
100:   } 
101: 
102:   $response->setJsonContent(array('status' => 'ERROR', 'messages' => $errors)); 
103:  } 
104: 
105:  return $response; 
106: }); 

Answer 1

80:  $phql = "INSERT INTO Products (partNumber) VALUES (:partNumber)"; 
81:  $params = array(
82:   ':partNumber' => $partNumber 
83: ); 
84:  $status = $app->modelsManager->executeQuery($phql, $params); 

我有这个尔康你讲的没有经验，但是从堆栈跟踪它似乎使用PDO。

80行：删除了最后一个冒号有... VALUES（：部分号码）“;

82行：加冒号数组键的开始，所以你必须 '：PARTNUMBER'=>

这将随后是一个有效的PDO准备（）语句。您的里程可能会有所不同，但是这会是一个很好的起点。