express.ui.update_accordion_panel

express.ui.update_accordion_panel(id, target, *body, title=MISSING, value=MISSING, icon=MISSING, show=None, session=None)

Dynamically update accordion panel contents.

Dynamically (i.e., programmatically) update/modify accordion panels in a Shiny app. These functions require an id to be provided to the accordion and must also be called within an active Shiny session.

Parameters

id: str

A string that matches an existing accordion’s id.

target: str

The value of an existing panel to update.

*body: TagChild = ()

If provided, the new body contents of the panel.

title: TagChild | None | MISSING_TYPE = MISSING

If not missing, the new title of the panel.

value: str | None | MISSING_TYPE = MISSING

If not missing, the new value of the panel.

icon: TagChild | None | MISSING_TYPE = MISSING

If not missing, the new icon of the panel.

session: Optional[Session] = None

A Shiny session object (the default should almost always be used).

References

Bootstrap Accordion

See Also

• accordion
• accordion_panel
• update_accordion
• insert_accordion_panel
• remove_accordion_panel

Examples

#| standalone: true
#| components: [editor, viewer]
#| layout: vertical
#| viewerHeight: 400

## file: app.py
from shiny import reactive
from shiny.express import input, ui

ui.input_switch("update_panel", "Update (and open) Sections")

with ui.accordion(id="acc", multiple=True):
    for letter in "ABCDE":
        with ui.accordion_panel(f"Section {letter}", value=f"sec_{letter}"):
            f"Some narrative for section {letter}"


@reactive.effect
@reactive.event(input.update_panel)
def _():
    txt = " (updated)" if input.update_panel() else ""
    show = bool(input.update_panel() % 2 == 1)
    for letter in "ABCDE":
        ui.update_accordion_panel(
            "acc",
            f"sec_{letter}",
            f"Some{txt} narrative for section {letter}",
            title=f"Section {letter}{txt}",
            # Open Accordion Panel to see updated contents
            show=show,
        )
    next_show_txt = "close" if show else "open"

    ui.update_switch("update_panel", label=f"Update (and {next_show_txt}) Sections")