Drupal 6：form_state在提交时为空 [英] Drupal 6: form_state values empty on submit

问题描述

我正在尝试在Drupal 6中创建一个自定义表单，并且所有似乎都可以使用下面的代码工作，包括在数据库中创建新条目时，所有$ form_state值都为空。我缺少什么？

 <？php 
函数rate_form（$ form_state）{
 $ form = array（）; 
 $ form ['rate'] ['name'] = array（
'#type'=>'textfield'，
'#title'=> t ），
'#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; 
} 
 
打印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（'谢谢！您的评分已添加。 
} 
？> 
  

解决方案

除非您指定，否则 $ form_state ['values'] 将是一个平面数组，而不是嵌套的，所以值将位于：

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

您可以使用devel模块很容易地调试此问题。与活性你可以做

 函数rate_form_submit（$ form_id，&安培; $ 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（'谢谢！您的评分已添加。 
} 
  

DPM是devel的定义了一个函数，它创建的一个很好的视觉表示该变量，您单击以显示/隐藏数组和类对象中的值。使用该信息，您将能够在存储所需值的位置。在这种情况下，这是一个很棒的工具，您希望在运行时检查变量。

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.'));
}
?>

解决方案

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']

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 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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