Hi,
I’ve built a Dash application, with lots of Dropdowns everywhere, some of them with multiple values.
I’ve been asked to add a ‘Select all’ button on all multi-select dropdowns.
To stay DRY, I’ve build a wrapper for dropdowns, and I would need to update it to add the ‘Select all’ button and the corresponding callback there, something like below:
def create_dropdown(*args, **kwargs):
dropdown = dcc.Dropdown(*args, **kwargs)
if kwargs.get('multi', False):
@app.callback(...)
def update_value(n_clicks):
return kwargs.get(options, [])
return html.Div([dropdown, html.Button('Select all', id=...)])
return dropdown
Unfortunately, this way, the callback is not applied, though the button is rendered.
Has anyone any clue how I can achieve the intended behavior ?
Thanks