模块开发：hook_form()、hook_menu()以及如何获取$_POST

Question

我想提高我在模块开发方面的知识（离基础还很远），所以我尝试开发一个周边搜索模块。 我现在所实现的是一个包含表单的块：

function perimeter_search_block_view($delta = '') {
  // Define an empty array for the block output.
  $block = array();

  switch($delta) {
    case 'perimeter_search_box':
      $block['subject'] = t('Perimeter search box');
      $block['content'] = drupal_get_form('perimeter_search_form');;
      break;
  }

  return $block;
}

/**
* Implementation of the perimeter search form
* @return array with form data
*/
function perimeter_search_form($form, &$form_state) {
  $form = array(
    '#action' => 'perimeter-search-results',
    'keyword' => array(
      '#type' => 'textfield'
    ),
    'location' => array(
      '#type' => 'textfield'
    ),
    'perimeter' => array(
      '#type' => 'select',
      '#title' => t('Perimeter'),
      '#options' => array('15 km', '30 km', '60 km', '120 km')
    ),
    'submit' => array(
      '#type' => 'submit',
      '#value' => t('Start search')
    )
  );

  return $form;
}

我还有一个输出搜索结果的函数：

/**
* Implementation of hook_menu()
* @return defined menu/page items
*/
function perimeter_search_menu() {
  $items = array();

  // Search results page
  $items['perimeter-search-results'] = array(
    'title' => t('Perimeter search results'),
    'page callback' => 'perimeter_search_results',
    'access arguments' => array('view perimeter search'),
    'type' => MENU_NORMAL_ITEM
  );

  return $items;
}

/**
* Processing job search queries
*/
function perimeter_search_results() {
  $page_content = t('Search results');
  return $page_content;
} 

我的（简单？）问题是：如何在我的 perimeter_search_results( ） 功能？

Answer 1

很简单，您必须为表单创建 _submit 函数，这里有一个示例：

function perimeter_search_form_submit($form, &$form_state) {
    /*
     * Your data handling goes here on the $form_state['values']['myfieldname']
     * variable.
     */
     drupal_set_message(t('Awesome, you managed to fill the form!'));
}

如果您需要验证..

function perimeter_search_form_validate($form, &$form_state) {
    if($form_state['values'['myfieldname'] == '') {
      form_set_error('', t('Hey, it doesn't work like that!'));
    }
}

请记住，如果您添加属性 '#required' =>对于表单字段为 TRUE，该字段将自动验证为始终需要该字段，因此如果您只需要编译该字段，则无需对该字段使用验证器。