Events
/
Event-arguments
In some use cases, you want to pass additional arguments to your event handlers. To do this you can bind an event trigger to a lambda, which can call your event handler with the arguments you want.
Try typing a color in an input below and clicking away from it to change the color of the input.
class ArgState(rx.State):
colors: list[str] = [
"rgba(222,44,12)",
"white",
"#007ac2",
]
def change_color(self, color: str, index: int):
self.colors[index] = color
def event_arguments_example():
return rx.hstack(
rx.input(
default_value=ArgState.colors[0],
on_blur=lambda c: ArgState.change_color(c, 0),
bg=ArgState.colors[0],
),
rx.input(
default_value=ArgState.colors[1],
on_blur=lambda c: ArgState.change_color(c, 1),
bg=ArgState.colors[1],
),
rx.input(
default_value=ArgState.colors[2],
on_blur=lambda c: ArgState.change_color(c, 2),
bg=ArgState.colors[2],
),
)In this case, in we want to pass two arguments to the event handler change_color, the color and the index of the color to change.
The on_blur event trigger passes the text of the input as an argument to the lambda, and the lambda calls the change_color event handler with the text and the index of the input.
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