Update accoriding to PR's requests

* rename operation_name with operation_id_base
* add get_operation_id_base
* get_operation_id not private
* update docs
* update tests

docs/api-guide/schemas.md

@@ -300,11 +300,28 @@ from rest_framework.schemas.openapi import AutoSchema
 
 class ExampleView(APIView):
     """APIView subclass with custom schema introspection."""
-    schema = AutoSchema(operation_name="Custom")
+    schema = AutoSchema(operation_id_base="Custom")
 ```
 
 The previous example will generate the following operationid: "ListCustoms", "RetrieveCustom", "UpdateCustom", "PartialUpdateCustom", "DestroyCustom".
 
+You need to provide the singular form of he operation name. For the list operation, a "s" will be append at the end of the name.
+
+If you need more configuration over the `operationId` field, you can override the `get_operation_id_base` and `get_operation_id` methods from the `AutoSchema` class.
+
+```python
+class CustomSchema(AutoSchema):
+    def get_operation_id_base(self, action):
+        pass
+
+    def get_operation_id(self, path, method):
+        pass
+
+class CustomView(APIView):
+    """APIView subclass with custom schema introspection."""
+    schema = CustomSchema()
+```
+
 [openapi]: https://github.com/OAI/OpenAPI-Specification
 [openapi-specification-extensions]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#specification-extensions
 [openapi-operation]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject

rest_framework/schemas/openapi.py

@@ -88,17 +88,17 @@ class AutoSchema(ViewInspector):
         'delete': 'Destroy',
     }
 
-    def __init__(self, operation_name=None):
+    def __init__(self, operation_id_base=None):
         """
-        :param operation_name: user-defined name in operationId. If empty, it will be deducted from the Model/Serializer/View name.
+        :param operation_id_base: user-defined name in operationId. If empty, it will be deducted from the Model/Serializer/View name.
         """
         super().__init__()
-        self.operation_name = operation_name
+        self.operation_id_base = operation_id_base
 
     def get_operation(self, path, method):
         operation = {}
 
-        operation['operationId'] = self._get_operation_id(path, method)
+        operation['operationId'] = self.get_operation_id(path, method)
         operation['description'] = self.get_description(path, method)
 
         parameters = []
@@ -115,22 +115,14 @@ class AutoSchema(ViewInspector):
 
         return operation
 
-    def _get_operation_id(self, path, method):
+    def get_operation_id_base(self, action):
         """
-        Compute an operation ID from the model, serializer or view name.
+        Compute the base part for operation ID from the model, serializer or view name.
         """
-        method_name = getattr(self.view, 'action', method.lower())
-        if is_list_view(path, method, self.view):
-            action = 'list'
-        elif method_name not in self.method_mapping:
-            action = method_name
-        else:
-            action = self.method_mapping[method.lower()]
-
         model = getattr(getattr(self.view, 'queryset', None), 'model', None)
 
-        if self.operation_name is not None:
-            name = self.operation_name
+        if self.operation_id_base is not None:
+            name = self.operation_id_base
 
         # Try to deduce the ID from the view's model
         elif model is not None:
@@ -158,6 +150,22 @@ class AutoSchema(ViewInspector):
         if action == 'list' and not name.endswith('s'):  # listThings instead of listThing
             name += 's'
 
+        return name
+
+    def get_operation_id(self, path, method):
+        """
+        Compute an operation ID from the view type and get_operation_id_base method.
+        """
+        method_name = getattr(self.view, 'action', method.lower())
+        if is_list_view(path, method, self.view):
+            action = 'list'
+        elif method_name not in self.method_mapping:
+            action = method_name
+        else:
+            action = self.method_mapping[method.lower()]
+
+        name = self.get_operation_id_base(action)
+
         return action + name
 
     def _get_path_parameters(self, path, method):

tests/schemas/test_openapi.py

@@ -574,9 +574,24 @@ class TestOperationIntrospection(TestCase):
         inspector = AutoSchema()
         inspector.view = view
 
-        operationId = inspector._get_operation_id(path, method)
+        operationId = inspector.get_operation_id(path, method)
         assert operationId == 'listExamples'
 
+    def test_operation_id_custom_operation_id_base(self):
+        path = '/'
+        method = 'GET'
+
+        view = create_view(
+            views.ExampleGenericAPIView,
+            method,
+            create_request(path),
+        )
+        inspector = AutoSchema(operation_id_base="Ulysse")
+        inspector.view = view
+
+        operationId = inspector.get_operation_id(path, method)
+        assert operationId == 'listUlysses'
+
     def test_operation_id_custom_name(self):
         path = '/'
         method = 'GET'
@@ -586,12 +601,48 @@ class TestOperationIntrospection(TestCase):
             method,
             create_request(path),
         )
-        inspector = AutoSchema(operation_name="Ulysse")
+        inspector = AutoSchema(operation_id_base='Ulysse')
         inspector.view = view
 
-        operationId = inspector._get_operation_id(path, method)
+        operationId = inspector.get_operation_id(path, method)
         assert operationId == 'listUlysses'
 
+    def test_operation_id_override_get(self):
+        class CustomSchema(AutoSchema):
+            def get_operation_id(self, path, method):
+                return 'myCustomOperationId'
+
+        path = '/'
+        method = 'GET'
+        view = create_view(
+            views.ExampleGenericAPIView,
+            method,
+            create_request(path),
+        )
+        inspector = CustomSchema()
+        inspector.view = view
+
+        operationId = inspector.get_operation_id(path, method)
+        assert operationId == 'myCustomOperationId'
+
+    def test_operation_id_override_base(self):
+        class CustomSchema(AutoSchema):
+            def get_operation_id_base(self, action):
+                return 'Item'
+
+        path = '/'
+        method = 'GET'
+        view = create_view(
+            views.ExampleGenericAPIView,
+            method,
+            create_request(path),
+        )
+        inspector = CustomSchema()
+        inspector.view = view
+
+        operationId = inspector.get_operation_id(path, method)
+        assert operationId == 'listItem'
+
     def test_repeat_operation_ids(self):
         router = routers.SimpleRouter()
         router.register('account', views.ExampleGenericViewSet, basename="account")