From 12440162a3f798bb22002dd5c073d5fdac400f83 Mon Sep 17 00:00:00 2001
From: Phil Krylov <phil.krylov@gmail.com>
Date: Mon, 14 Aug 2017 17:08:00 +0300
Subject: [PATCH] Stable/0.3.x: form parameter minimum/maximum values are
 strings per 1.2 spec

---
 rest_framework_swagger/introspectors.py |  4 ++--
 rest_framework_swagger/tests.py         | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/rest_framework_swagger/introspectors.py b/rest_framework_swagger/introspectors.py
index fb84598a..5f449979 100644
--- a/rest_framework_swagger/introspectors.py
+++ b/rest_framework_swagger/introspectors.py
@@ -486,10 +486,10 @@ def build_form_parameters(self):
             max_value = getattr(field, 'max_value', None)
             min_value = getattr(field, 'min_value', None)
             if max_value is not None and data_type == 'integer':
-                f['minimum'] = min_value
+                f['minimum'] = str(min_value)
 
             if max_value is not None and data_type == 'integer':
-                f['maximum'] = max_value
+                f['maximum'] = str(max_value)
 
             # ENUM options
             if choices:
diff --git a/rest_framework_swagger/tests.py b/rest_framework_swagger/tests.py
index d58bbe76..437886b3 100644
--- a/rest_framework_swagger/tests.py
+++ b/rest_framework_swagger/tests.py
@@ -1799,6 +1799,27 @@ def post(self, request, *args, **kwargs):
         self.assertIn('maximum', params[0])
         self.assertEqual(params[0]['maximum'], '100')
 
+    def test_parameters_minimum_is_string_with_introspection(self):
+        '''
+        minimum and maximum of Parameter Object required by
+        Swagger 1.2 spec to be string.
+        '''
+        class CommentSerializer(serializers.Serializer):
+            some_bigint = serializers.IntegerField(min_value=1, max_value=100)
+
+        class SerializedAPI(ListCreateAPIView):
+            serializer_class = CommentSerializer
+
+        class_introspector = self.make_introspector(SerializedAPI)
+        introspector = APIViewMethodIntrospector(class_introspector, 'POST')
+        parser = introspector.get_yaml_parser()
+        params = parser.discover_parameters(introspector)
+        self.assertEqual(len(params), 1)
+        self.assertIn('minimum', params[0])
+        self.assertEqual(params[0]['minimum'], '1')
+        self.assertIn('maximum', params[0])
+        self.assertEqual(params[0]['maximum'], '100')
+
     def test_response_messages(self):
         class SerializedAPI(ListCreateAPIView):
             serializer_class = CommentSerializer