From 0ab6a550a809a662a37636f65840c63ed2b4d996 Mon Sep 17 00:00:00 2001
From: "oleh.perlovskyi" <oleh.perlovskyi@yalantis.net>
Date: Tue, 15 Nov 2022 17:41:30 +0200
Subject: [PATCH] feat(views): add method override as_view in MethodResource
 for support apispec in instance of a view

---
 flask_apispec/views.py | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/flask_apispec/views.py b/flask_apispec/views.py
index 90a0b56..dc49f30 100644
--- a/flask_apispec/views.py
+++ b/flask_apispec/views.py
@@ -1,3 +1,4 @@
+form typing import Any, Callable
 import flask.views
 
 from flask_apispec.annotations import activate
@@ -47,3 +48,34 @@ class MethodResource(flask.views.MethodView, metaclass=MethodResourceMeta):
     exactly like `MethodView` but inherits **flask-apispec** annotations.
     """
     methods = None
+
+    @classmethod
+    def as_view(
+        cls, name: str, *class_args: Any, **class_kwargs: Any
+    ) -> Callable:
+        """Override as_view method with support __apispec__ from class.
+        
+        Example:
+            @doc(
+                tags=['pets'],
+                params={'pet_id': {'description': 'the pet name'}},
+            )
+            class CatResource(MethodResource):
+
+            @marshal_with(PetSchema)
+            def get(self, pet_id):
+                return Pet('calici', 'cat')
+
+            @marshal_with(PetSchema)
+            def put(self, pet_id):
+                return Pet('calici', 'cat')
+
+
+            cat_resource_view = CatResource.as_view('CatResource')
+
+            app.add_url_rule('/cat/<pet_id>', view_func=cat_resource_view)
+            docs.register(cat_resource_view, endpoint='CatResource')
+        """
+        view = super().as_view(name, *class_args, **class_kwargs)
+        view.__apispec__ = getattr(cls, "__apispec__", {})
+        return view