Schema is split to request and response parts

src/drf_yasg/inspectors/base.py

@@ -135,7 +135,8 @@ def __init__(self, view, path, method, components, request, field_inspectors):
         super(FieldInspector, self).__init__(view, path, method, components, request)
         self.field_inspectors = field_inspectors
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         """Convert a drf Serializer or Field instance into a Swagger object.
 
         Should return :data:`.NotHandled` if this inspector does not know how to handle the given `field`.
@@ -151,7 +152,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
         """
         return NotHandled
 
-    def probe_field_inspectors(self, field, swagger_object_type, use_references, **kwargs):
+    def probe_field_inspectors(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                               **kwargs):
         """Helper method for recursively probing `field_inspectors` to handle a given field.
 
         All arguments are the same as :meth:`.field_to_swagger_object`.
@@ -160,7 +162,8 @@ def probe_field_inspectors(self, field, swagger_object_type, use_references, **k
         """
         return self.probe_inspectors(
             self.field_inspectors, 'field_to_swagger_object', field, {'field_inspectors': self.field_inspectors},
-            swagger_object_type=swagger_object_type, use_references=use_references, **kwargs
+            swagger_object_type=swagger_object_type, use_references=use_references, is_request=is_request,
+            is_response=is_response, **kwargs
         )
 
     def _get_partial_types(self, field, swagger_object_type, use_references, **kwargs):
@@ -252,7 +255,8 @@ def SwaggerType(existing_object=None, **instance_kwargs):
 
 
 class SerializerInspector(FieldInspector):
-    def get_schema(self, serializer):
+
+    def get_schema(self, serializer, is_request=False, is_response=False):
         """Convert a DRF Serializer instance to an :class:`.openapi.Schema`.
 
         Should return :data:`.NotHandled` if this inspector does not know how to handle the given `serializer`.
@@ -365,15 +369,17 @@ def get_pagination_parameters(self):
 
         return self.probe_inspectors(self.paginator_inspectors, 'get_paginator_parameters', self.view.paginator) or []
 
-    def serializer_to_schema(self, serializer):
+    def serializer_to_schema(self, serializer, is_request=False, is_response=False):
         """Convert a serializer to an OpenAPI :class:`.Schema`.
 
         :param serializers.BaseSerializer serializer: the ``Serializer`` instance
         :returns: the converted :class:`.Schema`, or ``None`` in case of an unknown serializer
         :rtype: openapi.Schema,openapi.SchemaRef
         """
+
         return self.probe_inspectors(
-            self.field_inspectors, 'get_schema', serializer, {'field_inspectors': self.field_inspectors}
+            self.field_inspectors, 'get_schema', serializer,  {'field_inspectors': self.field_inspectors},
+            is_request=is_request, is_response=is_response
         )
 
     def serializer_to_parameters(self, serializer, in_):

src/drf_yasg/inspectors/field.py

@@ -35,8 +35,9 @@ def add_manual_fields(self, serializer, schema):
             for attr, val in swagger_schema_fields.items():
                 setattr(schema, attr, val)
 
-    def get_schema(self, serializer):
-        return self.probe_field_inspectors(serializer, openapi.Schema, self.use_definitions)
+    def get_schema(self, serializer, is_request=False, is_response=False):
+        return self.probe_field_inspectors(serializer, openapi.Schema, self.use_definitions, is_request=is_request,
+                                           is_response=is_response)
 
     def add_manual_parameters(self, serializer, parameters):
         """Add/replace parameters from the given list of automatically generated request parameters. This method
@@ -54,7 +55,7 @@ def get_request_parameters(self, serializer, in_):
         parameters = [
             self.probe_field_inspectors(
                 value, openapi.Parameter, self.use_definitions,
-                name=self.get_parameter_name(key), in_=in_
+                name=self.get_parameter_name(key), in_=in_, is_request=True
             )
             for key, value
             in fields.items()
@@ -71,33 +72,39 @@ def get_parameter_name(self, field_name):
     def get_serializer_ref_name(self, serializer):
         return get_serializer_ref_name(serializer)
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
 
         if isinstance(field, (serializers.ListSerializer, serializers.ListField)):
-            child_schema = self.probe_field_inspectors(field.child, ChildSwaggerType, use_references)
+            child_schema = self.probe_field_inspectors(field.child, ChildSwaggerType, use_references,
+                                                       is_request=is_request, is_response=is_response)
             return SwaggerType(
                 type=openapi.TYPE_ARRAY,
-                items=child_schema,
+                items=child_schema
             )
         elif isinstance(field, serializers.Serializer):
             if swagger_object_type != openapi.Schema:
                 raise SwaggerGenerationError("cannot instantiate nested serializer as " + swagger_object_type.__name__)
 
             ref_name = self.get_serializer_ref_name(field)
+            if ref_name and is_request:
+                ref_name += 'Request'
+            if ref_name and is_response:
+                ref_name += 'Response'
 
             def make_schema_definition():
                 properties = OrderedDict()
                 required = []
                 for property_name, child in field.fields.items():
+                    if is_request and child.write_only:
+                        continue
+                    elif is_response and child.read_only:
+                        continue
                     property_name = self.get_property_name(property_name)
-                    prop_kwargs = {
-                        'read_only': bool(child.read_only) or None
-                    }
-                    prop_kwargs = filter_none(prop_kwargs)
 
                     child_schema = self.probe_field_inspectors(
-                        child, ChildSwaggerType, use_references, **prop_kwargs
+                        child, ChildSwaggerType, use_references, is_request=is_request, is_response=is_response
                     )
                     properties[property_name] = child_schema
 
@@ -197,11 +204,13 @@ def get_related_model(model, source):
 class RelatedFieldInspector(FieldInspector):
     """Provides conversions for ``RelatedField``\ s."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
 
         if isinstance(field, serializers.ManyRelatedField):
-            child_schema = self.probe_field_inspectors(field.child_relation, ChildSwaggerType, use_references)
+            child_schema = self.probe_field_inspectors(field.child_relation, ChildSwaggerType, use_references,
+                                                       is_request=is_request, is_response=is_response)
             return SwaggerType(
                 type=openapi.TYPE_ARRAY,
                 items=child_schema,
@@ -217,7 +226,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
             if getattr(field, 'pk_field', ''):
                 # a PrimaryKeyRelatedField can have a `pk_field` attribute which is a
                 # serializer field that will convert the PK value
-                result = self.probe_field_inspectors(field.pk_field, swagger_object_type, use_references, **kwargs)
+                result = self.probe_field_inspectors(field.pk_field, swagger_object_type, use_references,
+                                                     is_request=is_request, is_response=is_response, **kwargs)
                 # take the type, format, etc from `pk_field`, and the field-level information
                 # like title, description, default from the PrimaryKeyRelatedField
                 return SwaggerType(existing_object=result)
@@ -414,7 +424,8 @@ class SimpleFieldInspector(FieldInspector):
     and min/max validators.
     """
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         type_info = get_basic_type_info(field)
         if type_info is None:
             return NotHandled
@@ -426,7 +437,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
 class ChoiceFieldInspector(FieldInspector):
     """Provides conversions for ``ChoiceField`` and ``MultipleChoiceField``."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
 
         if isinstance(field, serializers.ChoiceField):
@@ -459,7 +471,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
 class FileFieldInspector(FieldInspector):
     """Provides conversions for ``FileField``\ s."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
 
         if isinstance(field, serializers.FileField):
@@ -486,11 +499,13 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
 class DictFieldInspector(FieldInspector):
     """Provides conversion for ``DictField``."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
 
         if isinstance(field, serializers.DictField) and swagger_object_type == openapi.Schema:
-            child_schema = self.probe_field_inspectors(field.child, ChildSwaggerType, use_references)
+            child_schema = self.probe_field_inspectors(field.child, ChildSwaggerType, use_references,
+                                                       is_request=is_request, is_response=is_response)
             return SwaggerType(
                 type=openapi.TYPE_OBJECT,
                 additional_properties=child_schema
@@ -502,7 +517,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
 class HiddenFieldInspector(FieldInspector):
     """Hide ``HiddenField``."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):
         if isinstance(field, serializers.HiddenField):
             return None
 
@@ -512,7 +528,8 @@ def field_to_swagger_object(self, field, swagger_object_type, use_references, **
 class StringDefaultFieldInspector(FieldInspector):
     """For otherwise unhandled fields, return them as plain :data:`.TYPE_STRING` objects."""
 
-    def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):  # pragma: no cover
+    def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False, is_response=False,
+                                **kwargs):  # pragma: no cover
         # TODO unhandled fields: TimeField JSONField
         SwaggerType, ChildSwaggerType = self._get_partial_types(field, swagger_object_type, use_references, **kwargs)
         return SwaggerType(type=openapi.TYPE_STRING)
@@ -569,7 +586,8 @@ class RecursiveFieldInspector(FieldInspector):
 else:
     class RecursiveFieldInspector(FieldInspector):
         """Provides conversion for RecursiveField (https://github.com/heywbj/django-rest-framework-recursive)"""
-        def field_to_swagger_object(self, field, swagger_object_type, use_references, **kwargs):
+        def field_to_swagger_object(self, field, swagger_object_type, use_references, is_request=False,
+                                    is_response=False, **kwargs):
             if isinstance(field, RecursiveField) and swagger_object_type == openapi.Schema:
                 assert use_references is True, "Can not create schema for RecursiveField when use_references is False"
 

src/drf_yasg/inspectors/view.py

@@ -138,7 +138,7 @@ def get_request_body_schema(self, serializer):
         :param serializer: the view's request serializer as returned by :meth:`.get_request_serializer`
         :rtype: openapi.Schema
         """
-        return self.serializer_to_schema(serializer)
+        return self.serializer_to_schema(serializer, is_request=True)
 
     def make_body_parameter(self, schema):
         """Given a :class:`.Schema` object, create an ``in: body`` :class:`.Parameter`.
@@ -206,7 +206,7 @@ def get_default_responses(self):
         if any(is_form_media_type(encoding) for encoding in self.get_consumes()):
             default_schema = ''
         if default_schema and not isinstance(default_schema, openapi.Schema):
-            default_schema = self.serializer_to_schema(default_schema) or ''
+            default_schema = self.serializer_to_schema(default_schema, is_response=True) or ''
 
         if default_schema:
             if is_list_view(self.path, self.method, self.view) and self.method.lower() == 'get':
@@ -254,7 +254,7 @@ def get_response_schemas(self, response_serializers):
                 response = serializer
                 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)
+                    response.schema = self.serializer_to_schema(serializer, is_response=True)
             elif isinstance(serializer, openapi.Schema.OR_REF):
                 response = openapi.Response(
                     description='',
@@ -264,7 +264,7 @@ def get_response_schemas(self, response_serializers):
                 serializer = force_serializer_instance(serializer)
                 response = openapi.Response(
                     description='',
-                    schema=self.serializer_to_schema(serializer),
+                    schema=self.serializer_to_schema(serializer, is_response=True),
                 )
 
             responses[str(sc)] = response