3

我想要做的完美小模块是为drupal 6制作的，但令我沮丧的是它在drupal 7上不起作用。我了解到drupal 7有一个用于数据库的新api。我试图让它发挥作用，但我承认我在这里不合群。我希望有人能给我一点指导。特别是 db_query。

function webform_image_validation_webform_validation_validate($validator_name, $items,   
$components, $rule) {
$errors = array();
if ($items) {
switch ($validator_name) {
  case 'max_image_size':
    $dimensions = explode('x', $rule['data']);
    foreach ($items as $key => $val) {
      if (is_numeric($val['_fid'])) {
        $result = db_query("select * from {files} where fid = %d", $val['_fid']);
        while ($data = db_fetch_object($result)) {
          $thefile = $data;
        }
        $image_info = image_get_info($thefile->filepath);
        if (webform_image_validation_validate_image($image_info, $dimensions[0], $dimensions[1], FALSE) === FALSE) {
          $errors[$key] = t('Your image did not match the required width and/or height. (') . $dimensions[0] . t(' x ') . $dimensions[1] . t(')');
        }
      }
    }

这是我收到的错误。

Argument 2 passed to db_query() must be an array, string given, called in
/home/designco/public_html/dev/sites/all/modules/webform_image_validation/
webform_image_validation.module on line 69 and defined in
/home/designco/public_html/dev/includes/database/database.inc on line 2310

看来我需要添加一个数组，但我迷路了。任何帮助，将不胜感激。我只是想知道我是否走对了路。

4

3 回答 3

15

db_query 在 Drupal7 中的工作方式不同。 


$result = db_query("select * from {files} where fid = %d", $val['_fid']);
while ($data = db_fetch_object($result)) {
  $thefile = $data;
}
becomes 

$results = db_query("select * from {files} where fid = :fid", array(':fid' => $val['_fid']));
foreach($results as $result) {
  // Do your thing for each result.
}

于 2012-07-07T06:49:08.140 回答
1

尝试改变

$result = db_query("select * from {files} where fid = %d", $val['_fid']);
while ($data = db_fetch_object($result)) {
  $thefile = $data;
}

到

$query = db_select('files', 'f')
  ->fields('f')
  ->condition('fid', $val['_fid']);
$thefile = $query->execute()->fetchObject();

Drupal 7 数据库 API 文档http://drupal.org/node/310069

于 2012-07-06T21:40:42.187 回答
1

谢谢你JurgenR的回答。

再补充一件事：在 drupal 6 中，我们使用 '%s' 作为字符串。在 drupal 7 中，对所有人都是一样的。例如：

$results = db_query("select * from {files} 
where filename = :fname", array(':fname' => $filename));

如果要搜索以模式开头的记录，则查询将是：

$results = db_query("select * from {files} 
where filename = :fname", array(':fname' => $filename.'%'));

希望这是有用的。

于 2013-05-31T20:09:56.743 回答