Drupal 6:form_state 值在提交时为空

问题描述

我正在尝试在 Drupal 6 中创建一个自定义表单，下面的代码似乎一切正常，包括提交时在数据库中创建了一个新条目，但所有 $form_state 值都是空的.我错过了什么?

I'm trying to create a custom form in Drupal 6 and everything seems to work okay with the code below including when submitted a new entry is created in the database however all the $form_state values are empty. What am I missing?

<?php
function rate_form($form_state) {
  $form = array();
  $form['rate']['name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name'),
    '#size' => 30,
    '#maxlength' => 100,
    '#required' => TRUE,
  );
  $form['rate']['description'] = array(
    '#type' => 'textarea',
    '#title' => t('blah, blah'),
    '#maxlength' => 1500,
  );
  $form['rate']['submit'] = array('#type' => 'submit', '#value' => t('Rate!'));
  return $form;
}

print drupal_get_form($form_id);

function rate_form_submit($form_id, &$form_state) {
  db_query("INSERT INTO {rate_comments} (name, description) VALUES ('%s', '%s')", $form_state['values']['rate']['name'], $form_state['values']['rate']['description']);
  drupal_set_message(t('Thank you! Your rating has been added.'));
}
?>

推荐答案

除非你指定，$form_state['values'] 将是一个平面数组而不是一个嵌套数组，所以值将位于:

Unless you specify it, $form_state['values'] will be a flat array and not a nested one so the values will be located at:

$form_state['values']['name']
$form_state['values']['description']

您可以很容易地使用 devel 模块自行调试此问题.有了那个主动你可以做

You could have debugged this problem yourself pretty easily using the devel module. With that active you could do

function rate_form_submit($form_id, &$form_state) {
    dpm($form_state);
    //db_query("INSERT INTO {rate_comments} (name, description) VALUES ('%s', '%s')", $form_state['values']['rate']['name'], $form_state['values']['rate']['description']);
    drupal_set_message(t('Thank you! Your rating has been added.'));
}

dpm 是 devel 定义的一个函数，它创建了一个很好的变量可视化表示，您可以在其中单击以显示/隐藏数组和类对象中的值.使用该信息，您可以确定所需值的存储位置.在您想在运行时检查变量的情况下，这是一个很好的工具.

dpm is a function that devel has defined, it creates a nice visual representation of the variable, where you click to show/hide the values inside arrays and class objects. Using that info you would have been able to fine where the values you needed was stored. It's a great tool in situations like this, where you want to inspect variables at runtime.

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