I have the powershell function below
Function Test
{
Param
(
[Parameter()]
[string]$Text = "default text"
)
Write-Host "Text : $($Text)"
}
And I would like to be able to call this function like below :
Test -Text : should display the default text on the host
Test -Text "another text" : should display the provided text on the host
My issue is that the first syntax is not allowed in powershell ..
Any ideas of how I can achieve this goal ? I would like a kind of 'switch' parameter that can take values other than boolean.
Thanks
The problem you're running into is with parameter binding. PowerShell is seeing [string] $Text
and expecting a value. You can work around this like so:
function Test {
param(
[switch]
$Text,
[Parameter(
DontShow = $true,
ValueFromRemainingArguments = $true
)]
[string]
$value
)
if ($Text.IsPresent -and [string]::IsNullOrWhiteSpace($value)) {
Write-Host 'Text : <default text here>'
}
elseif ($Text.IsPresent) {
Write-Host "Text : $value"
}
}
Note: this is a hacky solution and you should just have a default when parameters aren't passed.