Do not fetch all participants of given survey to get information if participant has filled the survey

src/Result/Collection/ParticipantsDetails.php

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\LimeSurvey\ApiClient\Result\Collection;
+
+use Meritoo\LimeSurvey\ApiClient\Base\Result\BaseParticipantsCollection;
+
+/**
+ * Collection of participants' full data.
+ * All participants grouped per survey.
+ *
+ * It's a collection of participants' collections.
+ * The survey ID is used as an index per each collection of participants, so they are grouped by survey.
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class ParticipantsDetails extends BaseParticipantsCollection
+{
+    /**
+     * Returns information if survey with given ID has participant with given e-mail address
+     *
+     * @param int    $surveyId         ID of survey
+     * @param string $participantEmail E-mail of searched participant
+     * @return bool
+     */
+    public function hasParticipantOfSurvey($surveyId, $participantEmail)
+    {
+        return null !== $this->getParticipantOfSurvey($surveyId, $participantEmail);
+    }
+}