group date and slices in display of poll

src/Entity/Choice.php

@@ -61,12 +61,23 @@ class Choice {
 	}
 
 	public function display( $kind = 'text' ): array {
-		$fields = [
-			'id'         => $this->getId(),
-			'created_at' => $this->getCreatedAtAsString(),
-			'name'       => $this->getName(),
-			'url'        => $this->getUrl(),
-		];
+		if($kind == 'text'){
+			$fields = [
+				'id'         => $this->getId(),
+				'created_at' => $this->getCreatedAtAsString(),
+				'name'       => $this->getName(),
+				'url'        => $this->getUrl(),
+			];
+		}
+		elseif($kind=='date'){
+			$fields = [
+				'id'         => $this->getId(),
+				'created_at' => $this->getCreatedAtAsString(),
+				'name'       => $this->getName(),
+//				'url'        => $this->getUrl(),
+			];
+		}
+
 		return $fields;
 	}