Database Query during Dynamic Drupal node creation to get Entity ID - php

Question

I have a script which grabs the latest image from our surf webcam, it saves a node of type Photos. In that content type i have an entity field which references the swell size (content type swell_data). I can add a static entity id no problem:
// Reference Swell Data ID 176821
$node->field_buoy_ref[$node->language][0]['target_id'] = 176821;
How would I dynamically find the latest node created by the swell_data content type (added hourly using a CRON job) and use that value instead? For your reference this is the current script i am using (thanks to FooNinja)
define('DRUPAL_ROOT', getcwd());
require_once 'includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
$bodytext = "This was the view from the Camera at ".date('gA')." on ".date('l F jS Y');
$node = new stdClass(); // Create a new node object
$node->type = "photos"; // Or page, or whatever content type you like
node_object_prepare($node);
$node->title = "Caswell Camera ". date('D M j G:i');
$node->language = LANGUAGE_NONE;
// Author
$node->name = "Gower Live"; // UID of the author of the node; or use $node->name
// Publish Node
$node->status = 1;
//Set Body Text
$node->body[$node->language][0]['value'] = $bodytext;
$node->body[$node->language][0]['summary'] = text_summary($bodytext);
$node->body[$node->language][0]['format'] = 'filtered_html';
//Set Image Location (Caswell)
$node->field_photo_location[$node->language][0]['lat'] = 51.570195982718374;
$node->field_photo_location[$node->language][0]['lng'] = -4.030849980797484;
// Set the Photos date
$node->field_image_date[$node->language][0]['value'] = date("Y-m-d H:i:s");
// From the Webcam
$node->field_webcam_photo[$node->language][0]['value'] = "Caswell";
// Reference Wave Buoy
$node->field_buoy_ref[$node->language][0]['target_id'] = 176821; // I'd this value dynamically pulled from the DB
// Attach Latest Webcam Image
$file_path = drupal_realpath('images/webcams/caswell-webcam.jpg');
$file = (object) array(
'uid' => 1,
'uri' => $file_path,
'filemime' => file_get_mimetype($file_path),
'status' => 1,
);
// You can specify a subdirectory, e.g. public://foo/
$file = file_copy($file, 'public://');
$node->field_user_photo[$node->language][0] = (array) $file;
$path = 'node_created_on' . date('YmdHis');
$node->path = array('alias' => $path);
if($node = node_submit($node)) { // Prepare node for saving
node_save($node);
echo "Node with nid " . $node->nid . " saved!\n";
}
thanks
Lee

Answer 1

I added the following below the Bootstrap Line and bingo.
$result = db_query("SELECT nid, title, created FROM {node} WHERE type = :type AND title =:title", array(
':type' => 'wavebuoy_data',
':title' => "Buoy ". date('D M j gA'),
));
foreach($result as $row) {
$wave_buoy_ref_value = $row->nid;
//print_r($row);
}
Then when building the node, added the following:
// Reference Wave Buoy
$node->field_buoy_ref[$node->language][0]['target_id'] = $wave_buoy_ref_value;
Lee