Add ContactIsAttendingConditionRule example

examples/Module.php

@@ -5,6 +5,7 @@
 use Craft;
 use craft\base\conditions\BaseCondition;
 use craft\events\RegisterConditionRulesEvent;
+use modules\conditions\segments\ContactIsAttendingConditionRule;
 use modules\conditions\segments\ContactIsUserConditionRule;
 use modules\conditions\sendouts\LastEntryHasImageConditionRule;
 use modules\conditions\sendouts\MondayMorningSendoutConditionRule;
@@ -26,6 +27,7 @@ public function init(): void
             BaseCondition::EVENT_REGISTER_CONDITION_RULES,
             function(RegisterConditionRulesEvent $event) {
                 $event->conditionRules[] = ContactIsUserConditionRule::class;
+                $event->conditionRules[] = ContactIsAttendingConditionRule::class;
             }
         );
 

examples/conditions/segments/ContactIsAttendingConditionRule.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * @copyright Copyright (c) PutYourLightsOn
+ */
+
+namespace modules\conditions\segments;
+
+use craft\base\conditions\BaseConditionRule;
+use craft\base\ElementInterface;
+use craft\elements\conditions\ElementConditionRuleInterface;
+use craft\elements\db\ElementQueryInterface;
+use craft\elements\Entry;
+
+class ContactIsAttendingConditionRule extends BaseConditionRule implements ElementConditionRuleInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public string $operator = '';
+
+    /**
+     * @inheritdoc
+     */
+    public function getLabel(): string
+    {
+        return 'Contact is attending.';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getExclusiveQueryParams(): array
+    {
+        return [self::class];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function modifyQuery(ElementQueryInterface $query): void
+    {
+        $rsvp = Entry::find()
+            ->section('rsvp')
+            ->one();
+
+        $ids = $rsvp->attending->ids();
+
+        $query->andWhere([
+            'id' => $ids,
+        ]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function matchElement(ElementInterface $element): bool
+    {
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function inputHtml(): string
+    {
+        return '';
+    }
+}