Toggle Modal#
This guide addresses how to toggle the modal area of a template.
Prerequisites
The How to > Set a Template guide demonstrates how to set a template for a deployable app.
A modal can be opened and closed with .open_modal() and .close_modal() methods, respectively. Let’s create a modal that is activated by a button on the sidebar. We’ll first save this script below into a file called app.py:
app.py
import hvplot.pandas
import numpy as np
import pandas as pd
import panel as pn
# Explicitly set template and add some text to the header area
template = pn.template.BootstrapTemplate(title='Bootstrap Template')
# Data and Widgets
xs = np.linspace(0, np.pi)
freq = pn.widgets.FloatSlider(name="Frequency", start=0, end=10, value=2)
phase = pn.widgets.FloatSlider(name="Phase", start=0, end=np.pi)
# Interactive data pipeline
def sine(freq, phase):
return pd.DataFrame(dict(y=np.sin(xs*freq+phase)), index=xs)
dfi_sine = hvplot.bind(sine, freq, phase).interactive()
# Add components to the sidebar, main, and header
template.sidebar.extend([freq, phase])
template.main.append(
pn.Card(dfi_sine.hvplot(heiht=200, min_height=400).output(), title='Sine')
)
template.header.append('## Header')
# Add some content to the modal area
template.modal.append("## This is a modal")
# Create a button
modal_btn = pn.widgets.Button(name="Click for modal")
# Callback that will open the modal when the button is clicked
def about_callback(event):
template.open_modal()
# Link the button to the callback and append it to the sidebar
modal_btn.on_click(about_callback)
template.sidebar.append(modal_btn)
template.servable();
Now we can activate this app on the command line. When we click the button in the sidebar, we see the modal pop up:
panel serve app.py --show --dev
