Callback function not working

[ljw5122]

I am trying to create a dynamic controls based on users inputs. I am trying to mimic one of example in forum (I cant find it now…). I don’t understand why the last callback function is not working…

Here is the simplified code:

dy_ctrls = {}
test_ids = ['option2_ALL-esc', 'option2_ALL-esc-b', 'option2_ALL-sz', 'option1_ALL-b', 
            'option1_ALL-b-csc', 'option1_ALL-a-esc', 'option2_ALL-esc-a', 'option1_ALL-b-sz', 
            'option2_ALL-csc-b', 'option2_ALL-csc-a', 'option2_ALL-sz-b', 'option1_ALL-a', 
            'option2_ALL-csc', 'option1_ALL-b-esc', 'option1_ALL-a-csc']

for i in test_ids:
    dy_ctrls[i] = dcc.Input(placeholder='Enter a value...', type='number', value= 0, id = i)


app = dash.Dash()
app.config['suppress_callback_exceptions'] = True

app.layout = html.Div([                     
                dcc.RadioItems(
                    options=[
                        {'label': 'option1', 'value': 'option1'},
                        {'label': 'option2', 'value': 'option2'}
                    ],
                    value='option1', 
                    id = 'selection'
                ),
                html.Button(id='submit', type='click', children='OK', n_clicks =0),
                html.Div(id = 'input4users'), 
                html.Div(id = 'test'), 
                html.P('something')
        ])
   
@app.callback(Output('input4users', 'children'),
              [],
              [State('selection', 'value')], 
              [Event('submit', 'click')])
def update_table(i):
    output_list = []
    print('check pts-1, i=', i)
    for j in dy_ctrls.keys():
        if j.split('_')[0] == i:
            print(dy_ctrls[j])
            output_list.append(dy_ctrls[j])

    return html.Div(output_list)
    
@app.callback(Output('test', 'children'),
              [Input(i, 'value') for i in test_ids])
def update_value(*arg):
    print('check pts 2')
    lb_value = 0
    for i in arg:
        print(i)
        lb_value = lb_value + i
    return "Input value = {}".format(lb_value) 
   
                
if __name__ == '__main__':
    app.run_server(debug=True)

[ljw5122]

It’s duplicates as following:

Dynamic number of inputs based on anther input

@nedned thanks for the continued pointers. Going to take baby steps here Here’s my modified attempt, but I still get nothing until the slider is at 5… now I’m thinking the slider id has to exist in the layout, not just in the list for the callback to succeed. Is that corect? import dash from dash.dependencies import Input, Output, State import dash_core_components as dcc import dash_html_components as html import json app = dash.Dash() app.css.append_css({'external_url': 'https…

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