Changing default widget types in pn.param()

Panel
, ,
1

I’m wondering if there is a way to say

for all param.Integer(), set the widget to be a box instead of a slider

I know that I can set individual params via pn.Param.widgets but is there a way to do this in bulk by setting a type of param to display a certain way?

2

I’m pretty sure you can do it with passing in a dict to pn.Param(widgets={})

3

Do you mean defaults?

Potentially pn.Param.mapping.update()

4

ah yes, potentially - it’s the mapping update ability to set the widget for an entire class of parameter that i’m looking for!

5

How does one use the mapping keyword in a param object? This is what I’m trying to achieve, below:

widget = pn.Param(
                    self.param,
                    display_threshold = 0,
                    show_name = False,
                    sort = self.sort_by_precedence,
                    widgets = {},
                    expand=False,
                    expand_button = True,
                    expand_layout = pn.layout.base.Row,
                    mapping = {"param.Integer" : "LiteralInputTyped"}
            )

but mapping = {"param.Integer" : "LiteralInputTyped"} throws an error, got an unexpected keyword argument 'mapping'

thanks!

6

You set it before instantiating I think.
pn.Param.mapping.update() or if you want to override all defaults pn.Param.mapping = {}

7

confused as to how to do this… pn.Param.mapping is apparently a dictionary of <class 'param.parameters.<parameter>'> - Integer, Float, etc., what would be the command in order to edit these as they’re seemingly dictionary keys that aren’t strings?

8

Dictionary keys don’t have to be strings as long as they’re immutable, e.g. {("a", "b"): "a, b"} is valid since tuples are immutable. Just import param and use it like strings.

Oh you mean you usually do this, but it’s invalid here:

pn.Param.mapping.update(int=pn.widgets.IntSpinner)

Just use an actual dictionary:

pn.Param.mapping.update({param.Integer: pn.widgets.IntSpinner})
1 Like