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Drupal7 form表单二次开发要点与实例_PHP

Jun 01, 2016 am 11:56 AM

Drupal

请记得收藏此文,在你进行Drupal 7 custom module时,经常会用到的form 表单的跳转或重载。

主要汇总三个要点:

1.页面提交后,经过#submit处理后,需要redirect 跳转到另外一个页面。
2.url路径中存在destination参数时,页面直接跳转到destination所指的url,无法控制的问题。
3.form表单如何实现multiple steps forms 多个步骤,或者表单提交后,如何在表单获取到提交上来的值。

一、Form 表单 redirect(跳转)到另外一个页面

$form_state['redirect'] 的值可以是字符串或者数组,值通过url后,生成跳转地址。

复制代码 代码如下:$form_state['redirect'] = array(
  'node/123',
  array(
    'query' => array(
      'foo' => 'bar',
    ),
    'fragment' => 'baz',
}
//页面将会跳转到 node/123?foo=bar#baz

复制代码 代码如下:$form_state['redirect'] = 'node/123'
//页面将会跳转到 node/123


如果不指定$form_state['redirect'] 的值,默认跳转到当前页面。drupal_goto(current_path(), array(‘query' => drupal_get_query_parameters())); API中是这样执行的。

二、Form 表单 destination(目的地)被指定时也可以改变跳转的地址

在drupal_goto 函数中,你可以看到如果url路径中存在destination参数,页面直接就到destination所指向的链接,导致某些表单下的多个按钮提交后,本应redirect 跳转的页面也不尽不同。

于是在form的#submit 函数中,某些操作时可以直接删除掉destination。

复制代码 代码如下:if (isset($_GET['destination'])) {
  $form_state['redirect'] = array('next_step_page_url', array('query' => drupal_get_destination()));
  unset($_GET['destination']);
}
我采取的方法是,重新定义一个url并继续传递destination,但是将$_GET中的destination删除掉。但是一般还是会经常用到destination这个目的地的跳转。

三、Form 表单 实现multiple steps多个步骤,Form表单重载,获取Form提交的值

这些问题其实归根到底都是一个意思,就是让表单继续提交下去。而不是刷新页面。只需在form 表单的 #submit 函数中 执行以下代码:

复制代码 代码如下:if ($form_state['values']['op'] == t("Next Step")) {
  $form_state['rebuild'] = TRUE;
  $form_state['storage']['users'] = $form_state['values']['users'];
}
在form的define定义中即可获取到$form_state['storage']['users']这个值。

参考Drupal7 相关API函数:

drupal_redirect_form
drupal_goto
drupal_get_destination

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