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Traits/QueryTrait.php

@@ -75,8 +75,8 @@ abstract class QueryTrait extends Component implements ActiveQueryInterface, ISq
 
 
 	/**
-	 * @param Closure|string $callback
-	 * @param array          $attributes
+	 * @param Closure|Query $callback
+	 * @param array         $attributes
 	 *
 	 * @return $this
 	 */
@@ -94,6 +94,26 @@ abstract class QueryTrait extends Component implements ActiveQueryInterface, ISq
 	}
 
 
+	/**
+	 * @param Closure|Query $callback
+	 * @param array         $attributes
+	 *
+	 * @return $this
+	 */
+	public function whereExists(Closure|Query $callback, array $attributes = []): static
+	{
+		if ($callback instanceof Query) {
+			$this->where[] = 'EXISTS(' . $callback->build() . ')';
+		} else {
+			$this->where[] = 'EXISTS(' . $this->makeClosureFunction($callback) . ')';
+		}
+		if (count($attributes) > 0) {
+			$this->bindParams($attributes);
+		}
+		return $this;
+	}
+
+
 	/**
 	 * @param array $select
 	 *