Push-Location as a function's parameter

PowerShell Help
1

I’m looking for a way to use push-location with a function’s parameter. My goal is that a user will type "Import-SomeFile -Path ". When the user hits tab, then -Path would push-location to a network share to recurse through that directory. Is this possible/feasible/advisable?

2

So, you want to enable parameter auto-complete for some pre-determined network location?

3

Yes sir, that’s the goal.

4

Start here - https://foxdeploy.com/2017/01/13/adding-tab-completion-to-your-powershell-functions/. Stephen did an excellent job laying out the basic framework. You need a Dynamic Parameter.

5

Fantastic, thanks for the blazing fast responses. I’ll take a look!

6

Hi Colin,

In addition to the above, functionality for dynamic ValidateSet is coming in the next PowerShell release, keep an eye out!
https://github.com/PowerShell/PowerShell/pull/3784

Liam

7

Liam, thanks for the heads up! This is my first experience with Dynamic Parameters and they do seem to have a lot of code around them for this functionality to work, so it’ll be exciting to see that get folded in and make it more succinct. I’ll keep an eye out.

8

Here’s an example of the unreleased PowerShell 6 functionality (as per your requirements 'caus I’m nice)

class ValidateSetPath : System.Management.Automation.IValidateSetValuesGenerator
{
    [string[]] GetValidValues()
    {
        return (Get-ChildItem -Path '\\Network\Path' -File).Name
    }
}

function Test-ValidateSet
{
    [CmdletBinding()]
    param (
        [Parameter(Mandatory = $true)]
        [ValidateSet([ValidateSetPath])]
        [string[]]
        $Item
    )

    $Item | ForEach-Object {
        $Path = Join-Path -Path '\\Network\Path' -ChildPath $_

        Get-Item -Path $Path
    }
}
9

That’s super helpful. I’m going to get that incorporated right in! :slight_smile:

10

Not too soon, it’s still in beta :stuck_out_tongue: