Panel 0.12.6 cannot make param.MultiFileSelector behave like FileSelector

[trophime]

Hi,
I would like to use param.MultiFileSelector.
I expect it be give the same result as the FileSelector widget
But I cannot get it worked:

import param
class MRecordData(param.Parameterized):
    params = {'file_pattern':'*.txt'}
    fvariable  = param.MultiFileSelector(path='./data') #, **params)
    
import panel as pn
pn.extension()
files = pn.widgets.FileSelector('./data', file_pattern='*.txt')


base = MRecordData()
occupancy = pn.Row(MRecordData.param, files)
occupancy.show()

Don’t know what I’m missing
Any help would be great
Thanks

[Hoxbro]

Hi @trophime

The param.MultiFileSelector is mapped to pn.widgets.FileSelector but that does not mean it have the same functionality available to it. A way to do what you want is the following:

import param
import panel as pn
pn.extension()


class MRecordData(pn.viewable.Viewer):
    fvariable = param.MultiFileSelector()

    def __panel__(self):
        return pn.widgets.FileSelector.from_param(
            self.param.fvariable, show_name=False, directory=".", file_pattern="*.txt"
        )


files = pn.widgets.FileSelector(".", file_pattern="*.txt")


base = MRecordData()
occupancy = pn.panel(base)
occupancy

Hope this helps.