Using search api programatically

Question

I have read and tried https://www.drupal.org/docs/8/modules/search-api/developer-documentation/executing-a-search-in-code

I am using drupal 8 and using the default content index for testing. I am able to run the following code and I get a result count, but not result items.

$index = \Drupal\search_api\Entity\Index::load('default_index');
$query = $index->query();

// Change the parse mode for the search.
$parse_mode = \Drupal::service('plugin.manager.search_api.parse_mode')
  ->createInstance('direct');
$parse_mode->setConjunction('OR');
$query->setParseMode($parse_mode);

// Set fulltext search keywords and fields.
$query->keys('');
$query->setFulltextFields(['title', 'name', 'body']);

// Do paging.
$query->range(20, 10);

// Set one or more tags for the query.
// @see hook_search_api_query_TAG_alter()
// @see hook_search_api_results_TAG_alter()
$query->addTag('custom_search');

// Execute the search.
$results = $query->execute();

echo "Result count: {$results->getResultCount()}\n";
$ids = implode(', ', array_keys($results->getResultItems()));
echo "Returned IDs: $ids.\n";

Count shows a value but I can't get any result items. I tried with $query->keys(''); $query->keys('*'); and some value $query->keys('some value'); In all cases the count seems to be correct. The search therefore seems to be executed correctly, but how can I retrieve the items?

Answer 1

    //first just run this line
    kint($results);
    //and then you can uncomment the next lines, in my case I needed the response key 'elasticsearch_response'
    $response = $results->getExtraData('elasticsearch_response', []);
    $hits = $response['hits']['hits'];
    foreach($hits as $hit){
      kint($hit);
    }

Answer 2

Just found this old post while debugging the same issue. Adding my fix in case other hit it too..

The problem I ran into using the sample code was this line:

// Do paging.
$query->range(20, 10);

I since I only had a few records in my database, there wasn't 20+ records, the total count was correct, but couldn't page that far.

Updating to:

// Do paging.
$query->range(0, 10);

Fixed my issue.

Answer 3

You need to iterate and get them. Here is one way I did it:

$results = $query->execute();
$output = '';

foreach ($results as $result) {
  $value = $result->getField('fieldname')->getValues();
  $output .= $value[0];
}