define routing to a class method?

[erhuabushuo]

define routing to a class method?

[gi0baro]

@erhuabushuo by "class method" you mean a method defined into a class decorated by classmethod or an instance method?

The first is not supported, but the second one.
I'm not sure why would you do that, though. Can you explain your use-case?

[josejachuf]

So I understand it would be like that:

@app.route('/mymethod', methods='get')
async def mymethod():
    return MyClass.my_method()

Jose

[erhuabushuo]

like flask class based view

[gi0baro]

@erhuabushuo Emmett doesn't provide any ready-to-go facilities for that, mainly because in Emmett a class based view is an anti-pattern, secondly to prevent wasting performance in creating objects during request flow.

You might want to implement your own AppModule class for such logic, somewhat like the REST extension does:

from emmett import AppModule

class ViewModule(AppModule):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._define_routes()

    def _define_routes(self):
        for method in ["get", "post", "put", "delete"]:
            if handler := getattr(self, method, None):
                self.route(methods=[method], name=method)(handler)


class TodoView(ViewModule):
    def get(self):
        return {"key": "value"}


todo = app.module(__name__, "todo", url_prefix="/todo", module_class=TodoView)

Mind that the instance is shared across all requests, so avoid to set attributes to self inside your methods. You should use current, request or session objects for that.