From fc9665621173f29af5856c75c5b5f565b649132f Mon Sep 17 00:00:00 2001
From: Tim Younger <tim@webpt.com>
Date: Wed, 22 Feb 2017 12:48:38 -0700
Subject: [PATCH] skip Swagger model properties when input_filter fields are
 incorrectly defined.

---
 src/Service.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Service.php b/src/Service.php
index 533f296..5d3ae37 100644
--- a/src/Service.php
+++ b/src/Service.php
@@ -6,6 +6,7 @@
 
 namespace ZF\Apigility\Documentation\Swagger;
 
+use ZF\Apigility\Documentation\Field;
 use ZF\Apigility\Documentation\Service as BaseService;
 
 class Service extends BaseService
@@ -156,6 +157,9 @@ public function toArray()
 
         $requiredProperties = $properties = [];
         foreach ($fields as $field) {
+            if (!$field instanceof Field) {
+                continue;
+            }
             $properties[$field->getName()] = [
                 'type' => method_exists($field, 'getFieldType') ? $field->getFieldType() : 'string',
                 'dataType' => method_exists($field, 'getFieldType') ? $field->getFieldType() : 'string',