How do I use `groups` instead of `options` for pn.Param?

Panel
,
1

With this:

import param
import panel as pn
pn.extension()

class Test(param.Parameterized):

    a = param.Selector(default=1, objects=[1, 2, 3])

widgets = pn.Param(Test())

Instead of outputting:

pn.widgets.Select(name='A', options=[1, 2, 3])

Is it possible to output:

pn.widgets.Select(name='A', groups={"One": [1], "Two": [2], "Three": [3]})
2

Forcing options = [] works.

import param
import panel as pn

pn.extension()


class Test(param.Parameterized):
    a = param.Selector(default=1, objects=[1, 2, 3])


test = Test()
pn.Param(
    test,
    widgets={
        "a": {
            "type": pn.widgets.Select,
            "groups": {"Group 1": [1], "Group 2": [2], "Group 3": [3]},
            "options": [],
        }
    },
)
3

For reference for anyone else reading this, adding string names can be achieved much more simply using a dictionary rather than a list for the objects:

image
image1482×746 68.3 KB

But I assume that in Andrew’s real example there were multiple items per group, for which I believe his solution is the right approach.

1 Like
4

Right in the actual case I needed to use groups. Thanks for clarifying the other case.