在Drupal的模块开发中使用块中的模板文件中的foreach显示数组值

Question

I created a custom module to create a block programmatically and show country list. It uses custom template file. I passed the country list array to the template file.

Issue is how do I show each country using foreach inside the template file.

My code is given below.

my_web_service.module

    <?php

    /*
     * @file
     * A sample web service module
     */

    /*
     * Implements hook_menu
     */

    function my_web_service_menu() {
      $items = array();

      $items['test-web-service'] = array(
        'title' => 'Test Web Service',
        'description' => 'Test web service',    
        'access arguments' => array('access administration pages'),
        'type' => MENU_NORMAL_ITEM,
      );

      return $items;
    }

    function my_web_service_consume_data() {
      $url = 'http://services.groupkt.com/country/get/all';
      $result = drupal_http_request($url);
      $country_response = drupal_json_decode($result->data);
      $country = array();
      $i = 0;
      if (!empty($country_response)) {
        foreach($country_response['RestResponse']['result'] as $country_arr) {
          $country[$i] = $country_arr['name'];
          $i++;
        }
      }

      return $country; 
    }

    function my_web_service_block_info() {
      $blocks['my_web_service'] = array(
        'info' => t('My Web Service'),
      );

      return $blocks;
    }

    function my_web_service_block_view($delta = '') {
      switch ($delta) {
        case 'my_web_service' :
          $block['subject'] = t('My Web Service');
          if (user_access('access content')) {
            $result = my_web_service_consume_data();
            $variables = $result;
            //$block['content'] = theme('item_list', array('items' => $result)); 
            $block['content'] = theme('block__my_web_service', $variables);
            //$block['content'] = theme('item_list', $variables);
          }
      } 

      return $block;

}
function my_web_service_theme($existing, $type, $theme, $path) {
  $theme = array();
  $theme['block__my_web_service'] = array(
    'variables' => array(),
    'template' => 'block--my_web_service',    
    'path' => drupal_get_path('module', 'my_web_service') . '/templates',
  );
  return $theme;
}

template/block--my_web_service.tpl

<?php
echo '<pre>' . print_r($variables, true) . '</pre>';
?>

Any help is highly appreciated. Please find the screen shot of out put below.

Screen shot

References

Create a custom template file for a custom block in drupal

https://www.jaypan.com/tutorial/custom-drupal-blocks-right-way

Answer 1

I noticed a few issues in your code:

1. Your hook_theme implementation is incomplete. Final code:

   function my_web_service_theme($existing, $type, $theme, $path) {
      $theme = array();
      $theme['block__my_web_service'] = array(
        'variables' => array(
           'results' => array()
         ),
        'template' => 'block--my_web_service',    
        'path' => drupal_get_path('module', 'my_web_service') . '/templates',
      );
      return $theme;
    }
   

2. Call your theme like this:

    ...
    $result = my_web_service_consume_data();
    $variables = array(
        'results' => $result
    );
    $block['content'] = theme('block__my_web_service', $variables);
   

3. Use $results variable in your template:

    <?php
     foreach ($results as $result) {
        echo $result . '<br/>';
     }
    ?>
   

That's pretty much it. Good luck.