Dash overwriting self in class methods

Dash Python
1

Hi all,

We’re trying to port an app onto Dash but are having a bit of trouble. One issue I haven’t found a workaround for is using dash within class definitions ----
eg
‘’’
class Example:
def init(self):
…

@app.callback(Output('comp-id', 'value'), [Input('interval-id2', 'n_intervals)])
def foo(self):
    return self.bar()

‘’’
I get an error that ‘int’ self has no attribute ‘bar()’. Is there a way to support self in callback definitions or have dash ignore it?? or better yet, mix dash params with ordinary params?

2

The self parameter will not be self when called by dash, it will be the n_interval. If you need a ref to self when registering callbacks, you can register the callbacks in a factory method.

Example:

def register_callbacks(self, app):
    @app.callback(...)
    def foo(n_interval):
        return self.bar()