Powershell - removing "own" object using ScriptProperty

Question

Powershell V3+:
I'm writing a module providing various Cmdlets suiteable for interactive use. What I try to achive is, that variables (objects) are getting destructed without having the user to use remove-variable.

Example:

$object = open-object -someparam
$object # returns something
close-object -reference $object
$object # is not defined anymore - similiar to remove-variable

I could not manage to get the above working, alternative approaches like the below have also failed.

$x = New-Object -TypeName PSCustomObject
$x | Add-Member -type NoteProperty -Name Justsomedata -Value Nomeaning
$x | Add-Member -type ScriptMethod -Name killme -Value { $this = $null }
$x
$x.killme()
$x # :-(

Any suggestions? I want to prevent that there are variables in the users runspace that are not useable anymore.

Answer 1

最好以一种明确不应再使用的方式更改对象的状态。例如，您可以拥有一个名为IsOpen或$references = Get-Variable | Where-Object { $this -eq $_.Value} $references | ForEach-Object { Remove-Variable $_.Name } 的属性，然后如果他们尝试使用它就可以抛出异常。最好避免为用户实际删除变量，以防他们想要引用该对象，即使它不再有效。

但是，如果你真的想这样做，你可以试试这个：

department.job_titles << JobTitle.find_or_create_by(title: title)