APIBlueprint & APIVew: differences and compatibility (migration from flask_smorest)

[awoimbee]

Hi,

Using flask_smorest, I have routes defined like:

blp = Blueprint(
    "objects",
    "objects",
    url_prefix="/objects",
    description="Operations on objects",
)

@blp.route("/")
class AnyObject(MethodView):
    pass

How would that look like using flask-openapi3 ? It's a bit lost, currently I have:

blp = APIBlueprint(
    "objects",
    __name__,
    url_prefix="/objects",
    description="Operations on objects",
)
api_view = APIView()

@api_view.route("/")
class AnyObject:
    pass

blp.register_api_view(api_view) # this doesn't work

I din't understand the difference between APIView and APIBlueprint, nor why APIBlueprint seems to be required as a replacement for flask.MethodView ?

---

Environment:

• Python version: 3.12
• Flask version: 3.0.3
• flask-openapi3 version: 4.0.0rc2