drupal 查询按匹配结果中关键字出现次数排序

Question

在 @Fky 尤其是 @Syscall 的大力帮助下，我设法将 drupal 查询更改为在 3 个表而不是两个表内搜索，并添加条件以及关键字拆分和删除空格。

drupal sql 多个表的条件子句？

我希望结果 1) 按匹配结果的关键字出现次数排序，然后 2) 按 ASC 中的标题排序。

即。搜索“香蕉苹果橙”返回：

• 香蕉橙
• 苹果
• 香蕉
• 橙色

我设法按标题排序，但不知道如何先按关键字出现次数排序？

$term = strip_tags(drupal_substr($_POST['keyword'], 0, 100));
$terms = explode(' ', $term); // split using ' '
$terms = array_map('trim', $terms); // remove unwanted spaces
$termsfiltered = array_filter($terms);
 $or = db_or();
  foreach ($termsfiltered as $term) {
    $or->condition('fd.field_detailed_question_value', '%'.db_like($term).'%', 'LIKE');
    $or->condition('fb.body_value','%'.db_like($term).'%' , 'LIKE');
    $or->condition('n.title','%'.db_like($term).'%' , 'LIKE');
    }
 $query = db_select('node', 'n');

$query->fields('n');
$query->range(0,20); //LIMIT to 15 records
$query->orderBy('title', 'ASC'); //ORDER BY title
$query->leftJoin('field_data_body' , 'fb', 'fb.entity_id=n.nid');
$query->leftJoin('field_data_field_detailed_question' ,'fd', 'fd.entity_id=n.nid');
$query->condition($or);
$query->condition('n.status','1');
$stmt = $query->execute(); // execute the query (returns the "statement" to fetch).

我发现了一个问题Sort sql result by Outences of a set of keywords提到

将 where 子句中的所有 or 替换为 +，并确保每个 个人喜欢的陈述用括号括起来，然后按它排序。

我还看到了使用 $query->addExpression...

的示例

这是正确的方法/如何使用 drupal 查询来做到这一点？请帮忙:)

更新：或者以某种方式将 orderby 与 COUNT 结合起来？

Answer 1

链接的答案似乎是执行此操作的正确方法。

为 Drupal 查询创建

ORDER BY

 语句可以像这样完成：

$term = strip_tags(drupal_substr($_POST['keyword'], 0, 100));
$terms = explode(' ', $term); // split using ' '
$terms = array_map('trim', $terms); // remove unwanted spaces
$termsfiltered = array_filter($terms);

$order_array = [] ; // Create an empty array to create the string
$or = db_or() ;
foreach ($termsfiltered as $term) {

    // Or condition
    $or->condition('fd.field_detailed_question_value', '%'.db_like($term).'%', 'LIKE');
    $or->condition('fb.body_value','%'.db_like($term).'%' , 'LIKE');
    $or->condition('n.title','%'.db_like($term).'%' , 'LIKE');

    // Order by array (add the concat of each fields)
    $order_array[] = '(concat(title, fd.field_detailed_question_value, fb.body_value) like \'%'.db_like($term).'%\')';
}

$query = db_select('node', 'n');
$query->fields('n');
$query->range(0,20);
$query->orderBy(implode('+',$order_array), 'desc'); // Dynamic order by
$query->leftJoin('field_data_body' , 'fb', 'fb.entity_id=n.nid');
$query->leftJoin('field_data_field_detailed_question' ,'fd', 'fd.entity_id=n.nid');
$query->condition($or);
$query->condition('n.status','1');
$stmt = $query->execute(); // execute the query (returns the "statement" to fetch).

添加的内容是：

循环之前

• $order_array = [] ;
• $order_array[] = '(concat...)

  在循环内

• $query->orderBy(implode('+',$order_array), 'desc');

  改变了

请注意，您可以通过使用（或类似的东西）来防止错误：

if (empty($termsfiltered)) { return "No matches."; }

---

另一件事。在 Drupal 中使用

$_POST

 并不是一个好的做法。如果您来自表单，则应使用 

$form_state['values']['keyword']

 而不是 

$_POST['keyword']

：请参阅 

此示例。

---

编辑

$term = strip_tags(drupal_substr($_POST['keyword'], 0, 100));
$terms = explode(' ', $term); // split using ' '
$terms = array_map('trim', $terms); // remove unwanted spaces
$termsfiltered = array_filter($terms);

$order_array = ['title'=>[],'question'=>[],'body'=>[]] ; // Create an empty array to create the string
$or = db_or() ;
foreach ($termsfiltered as $term) {

    // Or condition
    $or->condition('fd.field_detailed_question_value', '%'.db_like($term).'%', 'LIKE');
    $or->condition('fb.body_value','%'.db_like($term).'%' , 'LIKE');
    $or->condition('n.title','%'.db_like($term).'%' , 'LIKE');

    // Order by array (add the concat of each fields)
    $order_array['title'][] = '(title like \'%'.db_like($term).'%\')';
    $order_array['question'][] = '(fd.field_detailed_question_value like \'%'.db_like($term).'%\')';
    $order_array['body'][] = '(fb.body_value like \'%'.db_like($term).'%\')';
}

$query = db_select('node', 'n');
$query->fields('n');
$query->range(0,20);
$query->orderBy(implode('+',$order_array['title']), 'desc'); // Dynamic order by
$query->orderBy(implode('+',$order_array['question']), 'desc'); // Dynamic order by
$query->orderBy(implode('+',$order_array['body']), 'desc'); // Dynamic order by
$query->leftJoin('field_data_body' , 'fb', 'fb.entity_id=n.nid');
$query->leftJoin('field_data_field_detailed_question' ,'fd', 'fd.entity_id=n.nid');
$query->condition($or);
$query->condition('n.status','1');
$stmt = $query->execute();