[Question] How to use arguments in on_click

[Dzheremi2]

Question

I'm trying to call on_click function with args like this
on_click=gen_line_inputs(some args)
but it isn't working.
The I tried to use this on_click=gen_line_inputs, args=(page, 12,)) method I found on streamlit, but it also didn't working.

So how can I call that func with args

Function I want to call is in another file

Code sample

# Button with on_click

proceedLyrcis = ft.FloatingActionButton(
        icon=ft.icons.CHECK_CIRCLE_OUTLINE_OUTLINED,
        text="Start sync",
        enable_feedback=True,
            on_click=gen_line_inputs
    )

# The Function

def gen_line_inputs(page, lines_cnt):
    sync_fields_column = ft.Column()
    page.controls.append(sync_fields_column)
    for i in range(lines_cnt):
        sync_fields_column.controls.append(editLine)
    page.update()

Error message

No response

------------------------------------------------------

• I have searched for answers to my question both in the issues and in previous discussions.

[vishnu-rvb]

you can use lambda function.
on_click=lambda event:gen_line_inputs(page, lines_cnt) assuming page and lines_cnt will be kept static.
in case of dynamic arguments , assign values to your arguments and set them as defaults.
on_click=lambda event,page=page,lines_cnt=lines_cnt:gen_line_inputs(page, lines_cnt)

[Dzheremi2]

you can use lambda function. on_click=lambda event:gen_line_inputs(page, lines_cnt) assuming page and lines_cnt will be kept static. in case of dynamic arguments , assign values to your arguments and set them as defaults. on_click=lambda event,page=page,lines_cnt=lines_cnt:gen_line_inputs(page, lines_cnt)

Thank you for help, but now I have another problem. After adding all necessary content, I need to update page with page.update() from my function, which is in another file. But when I try to do so, I get this error:

TypeError: Control._build_add_commands() missing 1 required positional argument: 'self'

Can you help me if it's not too much trouble.

[vishnu-rvb]

are you implementing flet controls from inside a class or from a simple main function?
show the full error message and form which line of code

[Dzheremi2]

Thanks for your answer a lot❤️ but i just forgot to place brackets in object call inside my function.

I used

sync_fields_column_controls.append(editLine)

insead of

sync_fields_column_controls.append(editLine())

And this was an error. Sorry for an inconvenience.