Issues using flask-openapi3 when its views are decorated

[maldoinc]

Environment:

• Python version: 312
• Operating system:
• Flask version:
• flask-openapi3 version:

---

This affects all versions. Flask-openapi3 removes all arguments passed to the view by any previous callers -- such as Dependency Injection frameworks, breaking things in the meanwhile.

In request._validate_request all arguments kwargs are removed as they are treated as path args. This is however not always a correct assumption as views from flask-openapi3 may be decorated again before being passed onto flask.

In this case flask calls the views decorated elsewhere which supply some arguments to flask-openapi3 which then simply removes them instead of passing them down. There are a few flask extensions which do this as well.

In the below example the call chain is as follows flask -> inject_services -> flask_openapi3.

Example:

@app.get("/greet")
def view(greeter: GreeterService, query: GreetQuery):
    return greeter.greet(query.name)

...

# Automatically decorate all flask views so that known services are passed down.
app.view_functions = {k: inject_services(v) for k, v in app.view_functions.items()}

...