Drupal 7:文件字段导致可靠下拉列表出错

时间:2012-10-25 21:24:56

标签: drupal-7 drupal-modules drupal-fapi drupal-forms

我正在使用Form API在模块中构建一个Form。我有几个依赖的下拉菜单一直工作得很好。代码如下:

$types = db_query('SELECT * FROM {touchpoints_metric_types}') -> fetchAllKeyed(0, 1);
$types = array('0' => '- Select -') + $types;
$selectedType = isset($form_state['values']['metrictype']) ? $form_state['values']['metrictype'] : 0;
$methods = _get_methods($selectedType);
$selectedMethod = isset($form_state['values']['measurementmethod']) ? $form_state['values']['measurementmethod'] : 0;
$form['metrictype'] = array(
    '#type' => 'select',
    '#title' => t('Metric Type'),
    '#options' => $types,
    '#default_value' => $selectedType,
    '#ajax' => array(
        'event' => 'change',
        'wrapper' => 'method-wrapper',
        'callback' => 'touchpoints_method_callback'
    )
);

$form['measurementmethod'] = array(
    '#type' => 'select',
    '#title' => t('Measurement Method'),
    '#prefix' => '<div id="method-wrapper">',
    '#suffix' => '</div>',
    '#options' => $methods,
    '#default_value' => $selectedMethod,
);

以下是_get_methods和touchpoints_method_callback函数:

function _get_methods($selected) {
    if ($selected) {
        $methods = db_query("SELECT * FROM {touchpoints_m_methods} WHERE mt_id=$selected") -> fetchAllKeyed(0, 2);
    } else {
        $methods = array();
}
    $methods = array('0' => "- Select -") + $methods;
    return $methods;
}

function touchpoints_method_callback($form, &$form_state) {
    return $form['measurementmethod'];
}

这一切都正常,直到我向表单添加了一个文件字段。这是我用于此的代码:

$form['metricfile'] = array(
    '#type' => 'file',
    '#title' => 'Attach a File',
);

现在,如果我更改了第一个下拉列表,则会添加该文件,并且旁边会显示“请稍候”消息,而不会加载第二个下拉列表的内容。我的JavaScript控制台中也出现以下错误:

“Uncaught TypeError:Object function(a,b){return new p.fn.init(a,b,c)}没有方法'handleError'”

我在这里做错了什么?

0 个答案:

没有答案