Is it possible to input a dictionary and return the same dictionary (updated one) in a callback?

hi @yogi_dhiman what do you mean return the same dictionary? Where would you like to return it to?

Thanks for reply Adam Okay here is the scenario I have a dictionary that is saved in dcc.store I want to import the dictionary on button click, update or add new keys to the dictionary and overwrite the same dcc.store component.

Hi @yogi_dhiman , take a look here: [image] Callback to change only one element of style dict Dash Python Hi @domingo You can include the style as a State in the callback, then update it like any dict - for example: @app.callback( Output("my_div", "style"), In…

Hmm … , but what if my dictionary is updated by some other callback routine? Returning the same dictionary from another routine stops the display of my Dashboard without any error. What Am I missing here? Here is the screen shot [image]

@yogi_dhiman , You can only output to an element’s prop once, however you can have multiple triggers and determine which input triggered the event. Therefore, you can update information differently based upon who triggered the event. Advanced Callbacks | Dash for Python Documentation | Pl…

Got it ! & thanks for saving my research time. I concluded that I will relook at the flow of information and will rearrange my logic to overcome this problem. Far better than going into javascript complexity.

Yeah, it is interesting. I will say that client_side callbacks can query information in the JavaScript and bring the information back into sync as an output. For example, you could have a dcc.store that you never touch except from the server or a callback, have a hidden button that triggers a clie…

your suggestion seems correct. I was speculating the same that I can exploit some untouched or call the primary source of making the dictionary to the routine to avoid duplicate or overwrite issues. Thanks !

Input a dictionary and output the same dictionary on a callback

Dash Python

AIMPED September 27, 2022, 9:51pm 4

Hi @yogi_dhiman ,

take a look here:

Topic		Replies	Views
Populate a dictionary using dcc.Store Dash Python	7	679	February 6, 2024
Return dictionary to callback output Dash Python	0	1067	March 9, 2023
Passing data from a callback to another callback with dcc.Store component Dash Python	4	983	December 21, 2021
Get updates of inputs in dash Dash Python	1	337	October 15, 2021
dcc.Store as Input not triggering callback Dash Python question	3	48	February 9, 2026

Input a dictionary and output the same dictionary on a callback

Related topics