mui.Select callback event doesn't send information

[cardosofede]

Hi, I just started with this library today and it's amazing!

This is the code that I'm using in a custom card to start strategies in Hummingbot:

with mui.Select(label="Scripts", onChange=lazy(lambda x: self.set_strategy(x, bot_name))):
  for script in scripts:
      mui.MenuItem(script, value=script)

and this is the method set_strategy:

@staticmethod
    def set_strategy(event, bot_name):
        st.session_state.active_bots[bot_name]["selected_strategy"] = event.target.value

When I press another button that triggers the execution I'm receiving this error:

  File "/Users/dardonacci/Documents/work/dashboard/ui_components/bot_performance_card.py", line 66, in <lambda>
    with mui.Select(label="Scripts", onChange=lazy(lambda x: self.set_strategy(x, bot_name))):
  File "/Users/dardonacci/Documents/work/dashboard/ui_components/bot_performance_card.py", line 15, in set_strategy
    st.session_state.active_bots[bot_name]["selected_strategy"] = event.target.value
  File "/Users/dardonacci/anaconda3/envs/dashboard/lib/python3.9/site-packages/streamlit_elements/core/callback.py", line 138, in __getattr__
    return self.__getitem__(value)

I also inspected the event that arrives in the function and is the dict --> {"isTrusted":false}

I don't know react so probably I'm missing something in how to use mui.Select, any help is welcome!

[chrda81]

I had the same problem and found the answer mentioned here #2

I have a TextField with the select=True option and can access the value by using onChange=sync(None, 'select_value'). The value from the 'select_value' returning dict can then be accessed by .props.value

if st.session_state.select_value is not None:
    # Select must use the second sync var
    select_value = st.session_state.select_value.props.value

I hope this helps for the mui.Select too, or you switch to the TextField with select option.