Allow Response objects with no schema

Fixes #66.

LICENSE.rst

@@ -10,7 +10,7 @@ License
 BSD 3-Clause License
 ********************
 
-Copyright (c) 2017, Cristian V. <cristi@cvjd.me> |br|\ All rights reserved.
+Copyright (c) 2018, Cristian V. <cristi@cvjd.me> |br|\ All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

docs/changelog.rst

@@ -2,6 +2,33 @@
 Changelog
 #########
 
+*********
+**1.4.2**
+*********
+
+- **FIXED:** fixed a bug that causes a ``ModelViewSet`` generated from models with nested ``ForeignKey`` to output
+  models named ``Nested`` into the ``definitions`` section (:issue:`59`, :pr:`65`)
+- **FIXED:** ``Response`` objects without a ``schema`` are now properly handled when passed through
+  ``swagger_auto_schema`` (:issue:`66`)
+
+*********
+**1.4.1**
+*********
+
+- **FIXED:** the ``coerce_to_string`` is now respected when setting the type, default value and min/max values of
+  ``DecimalField`` in the OpenAPI schema (:issue:`62`)
+- **FIXED:** error responses from web UI views are now rendered with ``TemplateHTMLRenderer`` instead of throwing
+  confusing errors (:issue:`58`)
+- **IMPROVED:** updated ``swagger-ui`` to version 3.10.0
+- **IMPROVED:** updated ``ReDoc`` to version 1.21.0
+
+*********
+**1.4.0**
+*********
+
+- **ADDED:** added settings for OAuth2 client configuration in ``swagger-ui`` (:issue:`53`)
+- **IMPROVED:** updated ``swagger-ui`` to version 3.9.3
+
 *********
 **1.3.1**
 *********

docs/conf.py

@@ -39,7 +39,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = 'drf-yasg'
-copyright = '2017, Cristi V.'
+copyright = '2018, Cristi V.'
 author = 'Cristi V.'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -162,6 +162,18 @@ autodoc_mock_imports = []
 
 nitpick_ignore = [
     ('py:class', 'object'),
+    ('py:class', 'bool'),
+    ('py:class', 'dict'),
+    ('py:class', 'list'),
+    ('py:class', 'str'),
+    ('py:class', 'int'),
+    ('py:class', 'bytes'),
+    ('py:class', 'tuple'),
+    ('py:class', 'callable'),
+    ('py:class', 'type'),
+    ('py:class', 'OrderedDict'),
+    ('py:class', 'None'),
+
     ('py:class', 'Exception'),
     ('py:class', 'collections.OrderedDict'),
 
@@ -174,29 +186,17 @@ nitpick_ignore = [
     ('py:class', 'OpenAPICodecJson'),
     ('py:class', 'OpenAPISchemaGenerator'),
 
-    ('py:obj', 'bool'),
+    ('py:class', 'coreapi.Field'),
-    ('py:obj', 'dict'),
+    ('py:class', 'BaseFilterBackend'),
-    ('py:obj', 'list'),
+    ('py:class', 'BasePagination'),
-    ('py:obj', 'str'),
+    ('py:class', 'Request'),
-    ('py:obj', 'int'),
+    ('py:class', 'rest_framework.request.Request'),
-    ('py:obj', 'bytes'),
+    ('py:class', 'rest_framework.serializers.Field'),
-    ('py:obj', 'tuple'),
+    ('py:class', 'serializers.Field'),
-    ('py:obj', 'callable'),
+    ('py:class', 'serializers.BaseSerializer'),
-    ('py:obj', 'type'),
+    ('py:class', 'Serializer'),
-    ('py:obj', 'OrderedDict'),
+    ('py:class', 'BaseSerializer'),
-    ('py:obj', 'None'),
+    ('py:class', 'APIView'),
-
-    ('py:obj', 'coreapi.Field'),
-    ('py:obj', 'BaseFilterBackend'),
-    ('py:obj', 'BasePagination'),
-    ('py:obj', 'Request'),
-    ('py:obj', 'rest_framework.request.Request'),
-    ('py:obj', 'rest_framework.serializers.Field'),
-    ('py:obj', 'serializers.Field'),
-    ('py:obj', 'serializers.BaseSerializer'),
-    ('py:obj', 'Serializer'),
-    ('py:obj', 'BaseSerializer'),
-    ('py:obj', 'APIView'),
 ]
 
 # even though the package should be already installed, the sphinx build on RTD

docs/custom_spec.rst

@@ -172,7 +172,11 @@ You can define some per-serializer options by adding a ``Meta`` class to your se
 Currently, the only option you can add here is
 
    * ``ref_name`` - a string which will be used as the model definition name for this serializer class; setting it to
-     ``None`` will force the serializer to be generated as an inline model everywhere it is used
+     ``None`` will force the serializer to be generated as an inline model everywhere it is used. If two serializers
+     have the same ``ref_name``, both their usages will be replaced with a reference to the same definition.
+     If this option is not specified, all serializers have an implicit name derived from their class name, minus any
+     ``Serializer`` suffix (e.g. ``UserSerializer`` -> ``User``, ``SerializerWithSuffix`` -> ``SerializerWithSuffix``)
+
 
 *************************
 Subclassing and extending
@@ -301,3 +305,25 @@ A second example, of a :class:`~.inspectors.FieldInspector` that removes the ``t
    This means that you should generally avoid view or method-specific ``FieldInspector``\ s if you are dealing with
    references (a.k.a named models), because you can never know which view will be the first to generate the schema
    for a given serializer.
+
+   **IMPORTANT:** nested fields on ``ModelSerializer``\ s that are generated from model ``ForeignKeys`` will always be
+   output by value. If you want the by-reference behaviour you have to explictly set the serializer class of nested
+   fields instead of letting ``ModelSerializer`` generate one automatically; for example:
+
+   .. code-block:: python
+
+      class OneSerializer(serializers.ModelSerializer):
+         class Meta:
+            model = SomeModel
+            fields = ('id',)
+
+
+      class AnotherSerializer(serializers.ModelSerializer):
+         chilf = OneSerializer()
+
+         class Meta:
+            model = SomeParentModel
+            fields = ('id', 'child')
+
+   Another caveat that stems from this is that any serializer named "``NestedSerializer``" will be forced inline
+   unless it has a ``ref_name`` set explicitly.

docs/security.rst

@@ -47,3 +47,19 @@ Operation-level overrides can be added using the ``security`` parameter of
 :ref:`@swagger_auto_schema <custom-spec-swagger-auto-schema>`.
 
 
+-------------------------------
+``swagger-ui`` as OAuth2 client
+-------------------------------
+
+It is possible to configure ``swagger-ui`` to authenticate against your (or a third party) OAuth2 service when sending
+"Try it out" requests. This client-side configuration does not remove the requirement of a spec-side
+:ref:`security definiiton <security-definitions-settings>`, but merely allows you to test OAuth2 APIs using
+``swagger-ui`` as a client.
+
+**DISCLAIMER**: this setup is very poorly tested as I do not currently implement OAuth in any of my projects. All
+contributions relating to documentation, bugs, mistakes or anything else are welcome as an issue or pull request. The
+settings described below were added as a result of discussion in issue :issue:`53`.
+
+The settings of interest can be found on the :ref:`settings page <oauth2-settings>`. Configuration options are similar
+to most OAuth client setups like web or mobile applications. Reading the relevant ``swagger-ui`` docmentation linked
+will also probably help.

docs/settings.rst

@@ -253,6 +253,25 @@ Controls how many levels are expaned by default when showing nested models.
 **Default**: :python:`3` |br|
 *Maps to parameter*: ``defaultModelExpandDepth``
 
+.. _oauth2-settings:
+
+OAUTH2_REDIRECT_URL
+-------------------
+
+Used when OAuth2 authenitcation of API requests via swagger-ui is desired.
+
+**Default**: :python:`None` |br|
+*Maps to parameter*: ``oauth2RedirectUrl``
+
+OAUTH2_CONFIG
+-------------
+
+Used when OAuth2 authenitcation of API requests via swagger-ui is desired. Provides OAuth2 configuration parameters
+to the ``SwaggerUIBundle#initOAuth`` method, and must be a dictionary. See
+`OAuth2 configuration <https://github.com/swagger-api/swagger-ui/blob/master/docs/usage/oauth2.md>`_.
+
+**Default**: :python:`{}`
+
 ******************
 ``REDOC_SETTINGS``
 ******************

package-lock.json

@@ -4,9 +4,9 @@
   "lockfileVersion": 1,
   "dependencies": {
     "argparse": {
-      "version": "1.0.9",
+      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
       "requires": {
         "sprintf-js": "1.0.3"
       }
@@ -38,9 +38,9 @@
       }
     },
     "commander": {
-      "version": "2.13.0",
+      "version": "2.14.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.13.0.tgz",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.14.1.tgz",
-      "integrity": "sha512-MVuS359B+YzaWqjCL/c+22gfryv+mCBPHAv3zyVI2GN8EY6IRP8VwtasXn8jyyhvvq84R4ImN1OKRtcbIasjYA==",
+      "integrity": "sha512-+YR16o3rK53SmWHU3rEM3tPAh2rwb1yPcQX5irVn7mb0gXbwuCCrnkbV5+PBfETdfg1vui07nM6PCG1zndcjQw==",
       "optional": true
     },
     "core-js": {
@@ -73,9 +73,9 @@
       "integrity": "sha1-8TyUAhQdoJ50rfTmN5jXkiBEOPI="
     },
     "es6-promise": {
-      "version": "4.2.2",
+      "version": "4.2.4",
-      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.2.tgz",
+      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.4.tgz",
-      "integrity": "sha512-LSas5vsuA6Q4nEdf9wokY5/AJYXry98i0IzXsv49rYsgDGDNDPbqAYR1Pe23iFxygfbGZNR/5VrHXBCh2BhvUQ=="
+      "integrity": "sha512-/NdNZVJg+uZgtm9eS3O6lrOLYmQag2DjdEXuPaHlZ6RuVqgqaVZfgYCepEIKsLqwdQArOPtC3XzRLqGGfT8KQQ=="
     },
     "esprima": {
       "version": "4.0.0",
@@ -126,7 +126,7 @@
       "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.10.0.tgz",
       "integrity": "sha512-O2v52ffjLa9VeM43J4XocZE//WT9N0IiwDa3KSHH7Tu8CtH+1qM8SIZvnsTh6v+4yFy5KUY3BHUVwjpfAWsjIA==",
       "requires": {
-        "argparse": "1.0.9",
+        "argparse": "1.0.10",
         "esprima": "4.0.0"
       }
     },
@@ -145,10 +145,10 @@
       "requires": {
         "call-me-maybe": "1.0.1",
         "debug": "3.1.0",
-        "es6-promise": "4.2.2",
+        "es6-promise": "4.2.4",
         "js-yaml": "3.10.0",
         "ono": "4.0.3",
-        "z-schema": "3.19.0"
+        "z-schema": "3.19.1"
       }
     },
     "lodash.get": {
@@ -185,9 +185,12 @@
       }
     },
     "openapi-sampler": {
-      "version": "0.4.3",
+      "version": "1.0.0-beta.8",
-      "resolved": "https://registry.npmjs.org/openapi-sampler/-/openapi-sampler-0.4.3.tgz",
+      "resolved": "https://registry.npmjs.org/openapi-sampler/-/openapi-sampler-1.0.0-beta.8.tgz",
-      "integrity": "sha512-Ml6o1gt++ZQ4JKL344YRo/fX05yuM6C+l/mGVX2yjhu1BRKyrRK4Z46uBTKSVaag1xINBFwYG7dZdz/10AmPzA=="
+      "integrity": "sha1-v0P/R3N/xOH5iNDiCC1JeI9B3q0=",
+      "requires": {
+        "json-pointer": "0.6.0"
+      }
     },
     "perfect-scrollbar": {
       "version": "0.8.1",
@@ -195,36 +198,36 @@
       "integrity": "sha512-RNC5tX/JMRYR+qVdJTEAWnRxw0Yf9lvbO8lTuAOvgDODkiA8lveTSkvrNMhmaGKEyimJpJl+myb/syVS9YyPuw=="
     },
     "prismjs": {
-      "version": "1.10.0",
+      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.10.0.tgz",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.11.0.tgz",
-      "integrity": "sha1-d+UYfCrmsyU/zDEwKc8l/lN3hyE=",
+      "integrity": "sha1-KXrvM+t5Qhv9sZJzpQkspRWXDSk=",
       "requires": {
         "clipboard": "1.7.1"
       }
     },
     "process-nextick-args": {
-      "version": "1.0.7",
+      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
-      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
+      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
     },
     "readable-stream": {
-      "version": "2.3.3",
+      "version": "2.3.4",
-      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.3.tgz",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.4.tgz",
-      "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
+      "integrity": "sha512-vuYxeWYM+fde14+rajzqgeohAI7YoJcHE7kXDAc4Nk0EbuKnJfqtY9YtRkLo/tqkuF7MsBQRhPnPeyjYITp3ZQ==",
       "requires": {
         "core-util-is": "1.0.2",
         "inherits": "2.0.3",
         "isarray": "1.0.0",
-        "process-nextick-args": "1.0.7",
+        "process-nextick-args": "2.0.0",
         "safe-buffer": "5.1.1",
         "string_decoder": "1.0.3",
         "util-deprecate": "1.0.2"
       }
     },
     "redoc": {
-      "version": "1.20.0",
+      "version": "1.21.0",
-      "resolved": "https://registry.npmjs.org/redoc/-/redoc-1.20.0.tgz",
+      "resolved": "https://registry.npmjs.org/redoc/-/redoc-1.21.0.tgz",
-      "integrity": "sha1-1c16xoQKJ8/7RzvSiYAFUq+CHq8=",
+      "integrity": "sha1-RY8E7b7MqyVbQORhZA0eRG949N0=",
       "requires": {
         "core-js": "2.5.3",
         "dropkickjs": "2.1.10",
@@ -234,9 +237,9 @@
         "json-schema-ref-parser": "3.3.1",
         "lunr": "1.0.0",
         "mark.js": "8.11.1",
-        "openapi-sampler": "0.4.3",
+        "openapi-sampler": "1.0.0-beta.8",
         "perfect-scrollbar": "0.8.1",
-        "prismjs": "1.10.0",
+        "prismjs": "1.11.0",
         "remarkable": "1.7.1",
         "scrollparent": "2.0.1",
         "slugify": "1.2.9",
@@ -298,7 +301,7 @@
       "requires": {
         "builtin-status-codes": "3.0.0",
         "inherits": "2.0.3",
-        "readable-stream": "2.3.3",
+        "readable-stream": "2.3.4",
         "to-arraybuffer": "1.0.1",
         "xtend": "4.0.1"
       }
@@ -312,9 +315,9 @@
       }
     },
     "swagger-ui-dist": {
-      "version": "3.9.2",
+      "version": "3.10.0",
-      "resolved": "https://registry.npmjs.org/swagger-ui-dist/-/swagger-ui-dist-3.9.2.tgz",
+      "resolved": "https://registry.npmjs.org/swagger-ui-dist/-/swagger-ui-dist-3.10.0.tgz",
-      "integrity": "sha1-XuK7G2IFPC3ydGnlVZDGX8AOidQ="
+      "integrity": "sha1-ilrzP/ImPHFaFD9z8qjUfVOZQ+8="
     },
     "tiny-emitter": {
       "version": "2.0.2",
@@ -348,9 +351,9 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "validator": {
-      "version": "9.2.0",
+      "version": "9.4.1",
-      "resolved": "https://registry.npmjs.org/validator/-/validator-9.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/validator/-/validator-9.4.1.tgz",
-      "integrity": "sha512-6Ij4Eo0KM4LkR0d0IegOwluG5453uqT5QyF5SV5Ezvm8/zmkKI/L4eoraafZGlZPC9guLkwKzgypcw8VGWWnGA=="
+      "integrity": "sha512-YV5KjzvRmSyJ1ee/Dm5UED0G+1L4GZnLN3w6/T+zZm8scVua4sOhYKWTUrKa0H/tMiJyO9QLHMPN+9mB/aMunA=="
     },
     "xtend": {
       "version": "4.0.1",
@@ -358,14 +361,14 @@
       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
     },
     "z-schema": {
-      "version": "3.19.0",
+      "version": "3.19.1",
-      "resolved": "https://registry.npmjs.org/z-schema/-/z-schema-3.19.0.tgz",
+      "resolved": "https://registry.npmjs.org/z-schema/-/z-schema-3.19.1.tgz",
-      "integrity": "sha512-V94f3ODuluBS4kQLLjNhwoMek0dyIXCsvNu/A17dAyJ6sMhT5KkJQwSn07R0naByLIXJWMDk+ruMfI/3G3hS4Q==",
+      "integrity": "sha512-jPNzqmOu3+AGbb4krDODqo4QBzwUGDVzyfGyy1HtWaUnafltQotatSpxxWd6Mp0iSZOUwHU5sqKYi+U8HsHMkg==",
       "requires": {
-        "commander": "2.13.0",
+        "commander": "2.14.1",
         "lodash.get": "4.4.2",
         "lodash.isequal": "4.5.0",
-        "validator": "9.2.0"
+        "validator": "9.4.1"
       }
     },
     "zone.js": {

package.json

@@ -1,7 +1,12 @@
 {
   "name": "drf-yasg",
   "dependencies": {
-    "redoc": "^1.20.0",
+    "redoc": "^1.21.0",
-    "swagger-ui-dist": "^3.9.2"
+    "swagger-ui-dist": "^3.10.0"
-  }
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/axnsan12/drf-yasg.git"
+  },
+  "private": true
 }

requirements/docs.txt

@@ -1,5 +1,5 @@
 # used by the 'docs' tox env for building the documentation
-Sphinx>=1.6.5
+Sphinx>=1.7.0
 sphinx_rtd_theme>=0.2.4
 Pillow>=4.3.0
 readme_renderer>=17.2

src/drf_yasg/app_settings.py

@@ -43,6 +43,8 @@ SWAGGER_DEFAULTS = {
     'SHOW_EXTENSIONS': True,
     'DEFAULT_MODEL_RENDERING': 'model',
     'DEFAULT_MODEL_DEPTH': 3,
+    'OAUTH2_REDIRECT_URL': None,
+    'OAUTH2_CONFIG': {},
 }
 
 REDOC_DEFAULTS = {

src/drf_yasg/inspectors/base.py

@@ -6,7 +6,7 @@ from rest_framework import serializers
 from rest_framework.utils import encoders, json
 
 from .. import openapi
-from ..utils import is_list_view
+from ..utils import decimal_as_float, is_list_view
 
 #: Sentinel value that inspectors must return to signal that they do not know how to handle an object
 NotHandled = object()
@@ -224,6 +224,8 @@ class FieldInspector(BaseInspector):
                             # JSON roundtrip ensures that the value is valid JSON;
                             # for example, sets and tuples get transformed into lists
                             default = json.loads(json.dumps(default, cls=encoders.JSONEncoder))
+                            if decimal_as_float(field):
+                                default = float(default)
                         except Exception:  # pragma: no cover
                             logger.warning("'default' on schema for %s will not be set because "
                                            "to_representation raised an exception", field, exc_info=True)
@@ -232,6 +234,7 @@ class FieldInspector(BaseInspector):
                     if default is not None:
                         instance_kwargs['default'] = default
 
+            if instance_kwargs.get('type', None) != openapi.TYPE_ARRAY:
                 instance_kwargs.setdefault('title', title)
             instance_kwargs.setdefault('description', description)
             instance_kwargs.update(kwargs)

src/drf_yasg/inspectors/field.py

@@ -1,5 +1,7 @@
+import logging
 import operator
 from collections import OrderedDict
+from decimal import Decimal
 
 from django.core import validators
 from django.db import models
@@ -8,9 +10,11 @@ from rest_framework.settings import api_settings as rest_framework_settings
 
 from .. import openapi
 from ..errors import SwaggerGenerationError
-from ..utils import filter_none
+from ..utils import decimal_as_float, filter_none
 from .base import FieldInspector, NotHandled, SerializerInspector
 
+logger = logging.getLogger(__name__)
+
 
 class InlineSerializerInspector(SerializerInspector):
     """Provides serializer conversions using :meth:`.FieldInspector.field_to_swagger_object`."""
@@ -53,10 +57,14 @@ class InlineSerializerInspector(SerializerInspector):
 
             serializer = field
             serializer_meta = getattr(serializer, 'Meta', None)
+            serializer_name = type(serializer).__name__
             if hasattr(serializer_meta, 'ref_name'):
                 ref_name = serializer_meta.ref_name
+            elif serializer_name == 'NestedSerializer' and isinstance(serializer, serializers.ModelSerializer):
+                logger.debug("Forcing inline output for ModelSerializer named 'NestedSerializer': " + str(serializer))
+                ref_name = None
             else:
-                ref_name = type(serializer).__name__
+                ref_name = serializer_name
                 if ref_name.endswith('Serializer'):
                     ref_name = ref_name[:-len('Serializer')]
 
@@ -76,11 +84,17 @@ class InlineSerializerInspector(SerializerInspector):
                     if child.required:
                         required.append(property_name)
 
-                return SwaggerType(
+                result = SwaggerType(
                     type=openapi.TYPE_OBJECT,
                     properties=properties,
                     required=required or None,
                 )
+                if not ref_name:
+                    # on an inline model, the title is derived from the field name
+                    # but is visually displayed like the model named, which is confusing
+                    # it is better to just remove title from inline models
+                    del result.title
+                return result
 
             if not ref_name or not use_references:
                 return make_schema_definition()
@@ -258,18 +272,29 @@ def find_limits(field):
         if isinstance(field, field_class)
     ]
 
+    if isinstance(field, serializers.DecimalField) and not decimal_as_float(field):
+        return limits
+
     for validator in field.validators:
         if not hasattr(validator, 'limit_value'):
             continue
 
+        limit_value = validator.limit_value
+        if isinstance(limit_value, Decimal) and decimal_as_float(field):
+            limit_value = float(limit_value)
+
         for validator_class, attr, improves in applicable_limits:
             if isinstance(validator, validator_class):
-                if attr not in limits or improves(validator.limit_value, limits[attr]):
+                if attr not in limits or improves(limit_value, limits[attr]):
-                    limits[attr] = validator.limit_value
+                    limits[attr] = limit_value
 
     return OrderedDict(sorted(limits.items()))
 
 
+def decimal_field_type(field):
+    return openapi.TYPE_NUMBER if decimal_as_float(field) else openapi.TYPE_STRING
+
+
 model_field_to_basic_type = [
     (models.AutoField, (openapi.TYPE_INTEGER, None)),
     (models.BinaryField, (openapi.TYPE_STRING, openapi.FORMAT_BINARY)),
@@ -277,7 +302,7 @@ model_field_to_basic_type = [
     (models.NullBooleanField, (openapi.TYPE_BOOLEAN, None)),
     (models.DateTimeField, (openapi.TYPE_STRING, openapi.FORMAT_DATETIME)),
     (models.DateField, (openapi.TYPE_STRING, openapi.FORMAT_DATE)),
-    (models.DecimalField, (openapi.TYPE_NUMBER, None)),
+    (models.DecimalField, (decimal_field_type, openapi.FORMAT_DECIMAL)),
     (models.DurationField, (openapi.TYPE_INTEGER, None)),
     (models.FloatField, (openapi.TYPE_NUMBER, None)),
     (models.IntegerField, (openapi.TYPE_INTEGER, None)),
@@ -300,9 +325,11 @@ serializer_field_to_basic_type = [
     (serializers.UUIDField, (openapi.TYPE_STRING, openapi.FORMAT_UUID)),
     (serializers.RegexField, (openapi.TYPE_STRING, None)),
     (serializers.CharField, (openapi.TYPE_STRING, None)),
-    ((serializers.BooleanField, serializers.NullBooleanField), (openapi.TYPE_BOOLEAN, None)),
+    (serializers.BooleanField, (openapi.TYPE_BOOLEAN, None)),
+    (serializers.NullBooleanField, (openapi.TYPE_BOOLEAN, None)),
     (serializers.IntegerField, (openapi.TYPE_INTEGER, None)),
-    ((serializers.FloatField, serializers.DecimalField), (openapi.TYPE_NUMBER, None)),
+    (serializers.FloatField, (openapi.TYPE_NUMBER, None)),
+    (serializers.DecimalField, (decimal_field_type, openapi.FORMAT_DECIMAL)),
     (serializers.DurationField, (openapi.TYPE_NUMBER, None)),  # ?
     (serializers.DateField, (openapi.TYPE_STRING, openapi.FORMAT_DATE)),
     (serializers.DateTimeField, (openapi.TYPE_STRING, openapi.FORMAT_DATETIME)),
@@ -326,6 +353,8 @@ def get_basic_type_info(field):
     for field_class, type_format in basic_type_info:
         if isinstance(field, field_class):
             swagger_type, format = type_format
+            if callable(swagger_type):
+                swagger_type = swagger_type(field)
             if callable(format):
                 format = format(field)
             break

src/drf_yasg/inspectors/view.py

@@ -221,7 +221,7 @@ class SwaggerAutoSchema(ViewInspector):
                 )
             elif isinstance(serializer, openapi.Response):
                 response = serializer
-                if not isinstance(response.schema, openapi.Schema.OR_REF):
+                if hasattr(response, 'schema') and not isinstance(response.schema, openapi.Schema.OR_REF):
                     serializer = force_serializer_instance(response.schema)
                     response.schema = self.serializer_to_schema(serializer)
             elif isinstance(serializer, openapi.Schema.OR_REF):

src/drf_yasg/openapi.py

@@ -35,6 +35,7 @@ FORMAT_URI = "uri"  #:
 # pulled out of my ass
 FORMAT_UUID = "uuid"  #:
 FORMAT_SLUG = "slug"  #:
+FORMAT_DECIMAL = "decimal"
 
 IN_BODY = 'body'  #:
 IN_PATH = 'path'  #:

src/drf_yasg/renderers.py

@@ -1,7 +1,9 @@
 from django.shortcuts import render, resolve_url
-from rest_framework.renderers import BaseRenderer
+from rest_framework.renderers import BaseRenderer, TemplateHTMLRenderer
 from rest_framework.utils import json
 
+from drf_yasg.openapi import Swagger
+
 from .app_settings import redoc_settings, swagger_settings
 from .codecs import VALIDATORS, OpenAPICodecJson, OpenAPICodecYaml
 
@@ -51,6 +53,11 @@ class _UIRenderer(BaseRenderer):
     template = ''
 
     def render(self, swagger, accepted_media_type=None, renderer_context=None):
+        if not isinstance(swagger, Swagger):
+            # if `swagger` is not a ``Swagger`` object, it means we somehow got a non-success ``Response``
+            # in that case, it's probably better to let the default ``TemplateHTMLRenderer`` render it
+            # see https://github.com/axnsan12/drf-yasg/issues/58
+            return TemplateHTMLRenderer().render(swagger, accepted_media_type, renderer_context)
         self.set_context(renderer_context, swagger)
         return render(
             renderer_context['request'],
@@ -63,6 +70,7 @@ class _UIRenderer(BaseRenderer):
         renderer_context['version'] = swagger.info.version
         renderer_context['swagger_settings'] = json.dumps(self.get_swagger_ui_settings())
         renderer_context['redoc_settings'] = json.dumps(self.get_redoc_settings())
+        renderer_context['oauth2_config'] = json.dumps(self.get_oauth2_config())
         renderer_context['USE_SESSION_AUTH'] = swagger_settings.USE_SESSION_AUTH
         renderer_context.update(self.get_auth_urls())
 
@@ -85,6 +93,7 @@ class _UIRenderer(BaseRenderer):
             'defaultModelRendering': swagger_settings.DEFAULT_MODEL_RENDERING,
             'defaultModelExpandDepth': swagger_settings.DEFAULT_MODEL_DEPTH,
             'defaultModelsExpandDepth': swagger_settings.DEFAULT_MODEL_DEPTH,
+            'oauth2RedirectUrl': swagger_settings.OAUTH2_REDIRECT_URL,
         }
         data = {k: v for k, v in data.items() if v is not None}
         if swagger_settings.VALIDATOR_URL != '':
@@ -102,6 +111,11 @@ class _UIRenderer(BaseRenderer):
 
         return data
 
+    def get_oauth2_config(self):
+        data = swagger_settings.OAUTH2_CONFIG
+        assert isinstance(data, dict), "OAUTH2_CONFIG must be a dict"
+        return data
+
 
 class SwaggerUIRenderer(_UIRenderer):
     """Renders a swagger-ui web interface for schema browisng.

src/drf_yasg/static/drf-yasg/swagger-ui-init.js

@@ -49,6 +49,7 @@ function initSwaggerUi() {
     };
 
     var swaggerSettings = JSON.parse(document.getElementById('swagger-settings').innerHTML);
+    console.log(swaggerSettings);
 
     for (var p in swaggerSettings) {
         if (swaggerSettings.hasOwnProperty(p)) {
@@ -56,6 +57,10 @@ function initSwaggerUi() {
         }
     }
     window.ui = SwaggerUIBundle(swaggerConfig);
+
+    var oauth2Config = JSON.parse(document.getElementById('oauth2-config').innerHTML);
+    console.log(oauth2Config);
+    window.ui.initOAuth(oauth2Config);
 }
 
 window.onload = function () {

src/drf_yasg/templates/drf-yasg/swagger-ui.html

@@ -60,6 +60,7 @@
 
 
 <script id="swagger-settings" type="application/json">{{ swagger_settings | safe }}</script>
+<script id="oauth2-config" type="application/json">{{ oauth2_config | safe }}</script>
 
 <script src="{% static 'drf-yasg/swagger-ui-dist/swagger-ui-bundle.js' %}"></script>
 <script src="{% static 'drf-yasg/swagger-ui-dist/swagger-ui-standalone-preset.js' %}"></script>

src/drf_yasg/utils.py

@@ -2,9 +2,11 @@ import inspect
 import logging
 from collections import OrderedDict
 
+from django.db import models
 from rest_framework import serializers, status
 from rest_framework.mixins import DestroyModelMixin, RetrieveModelMixin, UpdateModelMixin
 from rest_framework.request import is_form_media_type
+from rest_framework.settings import api_settings as rest_framework_settings
 from rest_framework.views import APIView
 
 logger = logging.getLogger(__name__)
@@ -118,6 +120,8 @@ def swagger_auto_schema(method=None, methods=None, auto_schema=unset, request_bo
 
         _methods = methods
         if methods or method:
+            assert available_methods or http_method_names, "`method` or `methods` can only be specified " \
+                                                           "on @detail_route or @api_view views"
             assert bool(methods) != bool(method), "specify either method or methods"
             assert not isinstance(methods, str), "`methods` expects to receive a list of methods;" \
                                                  " use `method` for a single argument"
@@ -273,3 +277,15 @@ def get_produces(renderer_classes):
     media_types = [renderer.media_type for renderer in renderer_classes or []]
     media_types = [encoding for encoding in media_types if 'html' not in encoding]
     return media_types
+
+
+def decimal_as_float(field):
+    """
+    Returns true if ``field`` is a django-rest-framework DecimalField and its ``coerce_to_string`` attribute or the
+    ``COERCE_DECIMAL_TO_STRING`` setting is set to ``False``.
+
+    :rtype: bool
+    """
+    if isinstance(field, serializers.DecimalField) or isinstance(field, models.DecimalField):
+        return not getattr(field, 'coerce_to_string', rest_framework_settings.COERCE_DECIMAL_TO_STRING)
+    return False

testproj/snippets/serializers.py

@@ -1,11 +1,13 @@
+from decimal import Decimal
+
 from django.contrib.auth import get_user_model
 from rest_framework import serializers
+from rest_framework.compat import MinValueValidator
 
 from snippets.models import LANGUAGE_CHOICES, STYLE_CHOICES, Snippet
 
 
 class LanguageSerializer(serializers.Serializer):
-
     name = serializers.ChoiceField(
         choices=LANGUAGE_CHOICES, default='python', help_text='The name of the programming language')
 
@@ -14,7 +16,6 @@ class LanguageSerializer(serializers.Serializer):
 
 
 class ExampleProjectSerializer(serializers.Serializer):
-
     project_name = serializers.CharField(help_text='Name of the project')
     github_repo = serializers.CharField(required=True, help_text='Github repository of the project')
 
@@ -49,6 +50,10 @@ class SnippetSerializer(serializers.Serializer):
     example_projects = serializers.ListSerializer(child=ExampleProjectSerializer(), read_only=True)
     difficulty_factor = serializers.FloatField(help_text="this is here just to test FloatField",
                                                read_only=True, default=lambda: 6.9)
+    rate_as_string = serializers.DecimalField(max_digits=6, decimal_places=3, default=Decimal('0.0'),
+                                              validators=[MinValueValidator(Decimal('0.0'))])
+    rate = serializers.DecimalField(max_digits=6, decimal_places=3, default=Decimal('0.0'), coerce_to_string=False,
+                                    validators=[MinValueValidator(Decimal('0.0'))])
 
     def create(self, validated_data):
         """

testproj/snippets/views.py

@@ -1,7 +1,7 @@
 from djangorestframework_camel_case.parser import CamelCaseJSONParser
 from djangorestframework_camel_case.render import CamelCaseJSONRenderer
 from inflection import camelize
-from rest_framework import generics
+from rest_framework import generics, status
 from rest_framework.parsers import FormParser
 
 from drf_yasg import openapi
@@ -62,8 +62,12 @@ class SnippetDetail(generics.RetrieveUpdateDestroyAPIView):
             type=openapi.TYPE_INTEGER,
             description="path parameter override",
             required=True
+        ),
+    ], responses={
+        status.HTTP_204_NO_CONTENT: openapi.Response(
+            description="This should not crash"
         )
-    ])
+    })
     def delete(self, request, *args, **kwargs):
         """delete method docstring"""
         return super(SnippetDetail, self).patch(request, *args, **kwargs)

testproj/testproj/settings/base.py

@@ -26,6 +26,7 @@ INSTALLED_APPS = [
     'snippets',
     'users',
     'articles',
+    'todo',
 ]
 
 MIDDLEWARE = [

testproj/testproj/urls.py

@@ -62,5 +62,6 @@ urlpatterns = [
     url(r'^snippets/', include('snippets.urls')),
     url(r'^articles/', include('articles.urls')),
     url(r'^users/', include('users.urls')),
+    url(r'^todo/', include('todo.urls')),
     url(r'^plain/', plain_view),
 ]

testproj/todo/migrations/0001_initial.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-02-21 23:26
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Todo',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=50)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='TodoAnother',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=50)),
+                ('todo', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='todo.Todo')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='TodoYetAnother',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=50)),
+                ('todo', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='todo.TodoAnother')),
+            ],
+        ),
+    ]

testproj/todo/models.py

@@ -0,0 +1,15 @@
+from django.db import models
+
+
+class Todo(models.Model):
+    title = models.CharField(max_length=50)
+
+
+class TodoAnother(models.Model):
+    todo = models.ForeignKey(Todo, on_delete=models.CASCADE)
+    title = models.CharField(max_length=50)
+
+
+class TodoYetAnother(models.Model):
+    todo = models.ForeignKey(TodoAnother, on_delete=models.CASCADE)
+    title = models.CharField(max_length=50)

testproj/todo/serializer.py

@@ -0,0 +1,24 @@
+from rest_framework import serializers
+
+from .models import Todo, TodoAnother, TodoYetAnother
+
+
+class TodoSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Todo
+        fields = ('title',)
+
+
+class TodoAnotherSerializer(serializers.ModelSerializer):
+    todo = TodoSerializer()
+
+    class Meta:
+        model = TodoAnother
+        fields = ('title', 'todo')
+
+
+class TodoYetAnotherSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = TodoYetAnother
+        fields = ('title', 'todo')
+        depth = 2

testproj/todo/urls.py

@@ -0,0 +1,10 @@
+from rest_framework import routers
+
+from todo import views
+
+router = routers.DefaultRouter()
+router.register(r'', views.TodoViewSet)
+router.register(r'another', views.TodoAnotherViewSet)
+router.register(r'yetanother', views.TodoYetAnotherViewSet)
+
+urlpatterns = router.urls

testproj/todo/views.py

@@ -0,0 +1,19 @@
+from rest_framework import viewsets
+
+from .models import Todo, TodoAnother, TodoYetAnother
+from .serializer import TodoAnotherSerializer, TodoSerializer, TodoYetAnotherSerializer
+
+
+class TodoViewSet(viewsets.ReadOnlyModelViewSet):
+    queryset = Todo.objects.all()
+    serializer_class = TodoSerializer
+
+
+class TodoAnotherViewSet(viewsets.ReadOnlyModelViewSet):
+    queryset = TodoAnother.objects.all()
+    serializer_class = TodoAnotherSerializer
+
+
+class TodoYetAnotherViewSet(viewsets.ReadOnlyModelViewSet):
+    queryset = TodoYetAnother.objects.all()
+    serializer_class = TodoYetAnotherSerializer

tests/reference.yaml

@@ -330,7 +330,7 @@ paths:
           type: integer
       responses:
         '204':
-          description: ''
+          description: This should not crash
       tags:
         - snippets
     parameters:
@@ -339,6 +339,105 @@ paths:
         description: A unique integer value identifying this snippet.
         required: true
         type: integer
+  /todo/:
+    get:
+      operationId: todo_list
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            type: array
+            items:
+              $ref: '#/definitions/Todo'
+      tags:
+        - todo
+    parameters: []
+  /todo/another/:
+    get:
+      operationId: todo_another_list
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            type: array
+            items:
+              $ref: '#/definitions/TodoAnother'
+      tags:
+        - todo
+    parameters: []
+  /todo/another/{id}/:
+    get:
+      operationId: todo_another_read
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            $ref: '#/definitions/TodoAnother'
+      tags:
+        - todo
+    parameters:
+      - name: id
+        in: path
+        description: A unique integer value identifying this todo another.
+        required: true
+        type: integer
+  /todo/yetanother/:
+    get:
+      operationId: todo_yetanother_list
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            type: array
+            items:
+              $ref: '#/definitions/TodoYetAnother'
+      tags:
+        - todo
+    parameters: []
+  /todo/yetanother/{id}/:
+    get:
+      operationId: todo_yetanother_read
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            $ref: '#/definitions/TodoYetAnother'
+      tags:
+        - todo
+    parameters:
+      - name: id
+        in: path
+        description: A unique integer value identifying this todo yet another.
+        required: true
+        type: integer
+  /todo/{id}/:
+    get:
+      operationId: todo_read
+      description: ''
+      parameters: []
+      responses:
+        '200':
+          description: ''
+          schema:
+            $ref: '#/definitions/Todo'
+      tags:
+        - todo
+    parameters:
+      - name: id
+        in: path
+        description: A unique integer value identifying this todo.
+        required: true
+        type: integer
   /users/:
     get:
       operationId: users_list
@@ -538,7 +637,6 @@ definitions:
         title: Linenos
         type: boolean
       language:
-        title: Language
         description: Sample help text for language
         type: object
         properties:
@@ -983,7 +1081,6 @@ definitions:
               - zephir
             default: python
       styles:
-        title: Styles
         type: array
         items:
           type: string
@@ -1020,12 +1117,10 @@ definitions:
         default:
           - friendly
       lines:
-        title: Lines
         type: array
         items:
           type: integer
       exampleProjects:
-        title: Example projects
         type: array
         items:
           $ref: '#/definitions/Project'
@@ -1036,6 +1131,75 @@ definitions:
         type: number
         readOnly: true
         default: 6.9
+      rateAsString:
+        title: Rate as string
+        type: string
+        format: decimal
+        default: '0.000'
+      rate:
+        title: Rate
+        type: number
+        format: decimal
+        default: 0.0
+        minimum: 0.0
+  Todo:
+    required:
+      - title
+    type: object
+    properties:
+      title:
+        title: Title
+        type: string
+        maxLength: 50
+  TodoAnother:
+    required:
+      - title
+      - todo
+    type: object
+    properties:
+      title:
+        title: Title
+        type: string
+        maxLength: 50
+      todo:
+        $ref: '#/definitions/Todo'
+  TodoYetAnother:
+    required:
+      - title
+    type: object
+    properties:
+      title:
+        title: Title
+        type: string
+        maxLength: 50
+      todo:
+        required:
+          - title
+        type: object
+        properties:
+          id:
+            title: ID
+            type: integer
+            readOnly: true
+          title:
+            title: Title
+            type: string
+            maxLength: 50
+          todo:
+            required:
+              - title
+            type: object
+            properties:
+              id:
+                title: ID
+                type: integer
+                readOnly: true
+              title:
+                title: Title
+                type: string
+                maxLength: 50
+            readOnly: true
+        readOnly: true
   UserSerializerrr:
     required:
       - username
@@ -1060,13 +1224,11 @@ definitions:
         format: email
         maxLength: 254
       articles:
-        title: Articles
         type: array
         items:
           type: integer
         uniqueItems: true
       snippets:
-        title: Snippets
         type: array
         items:
           type: integer
@@ -1084,7 +1246,6 @@ definitions:
         format: date
         readOnly: true
       article_slugs:
-        title: Article slugs
         type: array
         items:
           type: string

tests/test_reference_schema.py

@@ -46,3 +46,9 @@ def test_noop_inspectors(swagger_settings, mock_schema_request, codec_json, refe
     json_bytes = codec_json.encode(swagger)
     swagger_dict = json.loads(json_bytes.decode('utf-8'), object_pairs_hook=OrderedDict)
     compare_schemas(swagger_dict, reference_schema)
+
+
+def test_no_nested_model(swagger_dict):
+    # ForeignKey models in deep ModelViewSets might wrongly be labeled as 'Nested' in the definitions section
+    # see https://github.com/axnsan12/drf-yasg/issues/59
+    assert 'Nested' not in swagger_dict['definitions']

tox.ini

@@ -2,7 +2,7 @@
 envlist =
     py27-django111-drf37,
     py{34,35,36}-django{111,20}-drf37,
-    py36-drfmaster,
+    py36-django20-drfmaster,
     lint, docs
 
 [travis:env]
@@ -17,9 +17,8 @@ deps =
 
     drf37: djangorestframework>=3.7.7,<3.8
 
-    # test with the latest build of Django and django-rest-framework to get early warning of compatibility issues
+    # test with the latest build of django-rest-framework to get early warning of compatibility issues
     drfmaster: https://github.com/encode/django-rest-framework/archive/master.tar.gz
-    drfmaster: https://github.com/django/django/archive/master.tar.gz
 
     # other dependencies
     -rrequirements/validation.txt
@@ -28,9 +27,6 @@ deps =
 commands =
     pytest --cov --cov-config .coveragerc --cov-append --cov-report="" {posargs}
 
-[testenv:py36-drfmaster]
-pip_pre = True
-
 [testenv:lint]
 skip_install = true
 deps =