How to use an array as a parameter?

Question

I want to prompt for options from a programmatically generated list.

Background: I have 2 AWS accounts with containing different environments. The script automatically detects which account you are in, and then it should prompt for which environment you want to join.

I'm trying this:

$envs = "
1,Dev
1,Test
1,Demo
2,Staging
2,Production
" | ConvertFrom-Csv -Delimiter ","  -header "awsAccount","Environment"

$awsAccount = Determine-awsAccount

$envs = ([string]($allServers.Environment | Where-Object -property awsAccount -eq $awsAccount | Sort-Object |  Get-unique)).replace(" ",",")

$title = "Deploy into which environment"
$message = "Please select which environment you want to deploy into"
$options = [System.Management.Automation.Host.ChoiceDescription[]]($envs)
$result = $host.ui.PromptForChoice($title, $message, $options, 0)

You can create a pop-up of options using $options = [System.Management.Automation.Host.ChoiceDescription[]]("yes","no")

But in my case it's popping up one option containing all my environments, separated by commas. I want it to pop up one option for each (relevant) environment.

How can I pop the string list of environments back out from the in-PowerShell world to the outside-PowerShell world?

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

I am reading your question as:

When awsAccount 1 is relevant, give the options for awsAccount 1 (Dev, test, Demo)"

When awsAccount 2 is relevant, give the options for awsAccount 2 (Demo, Staging, Production)"

Main change is to your $envs = ([string](.. line. I've used a new variable $envsToDisplayInPrompt to avoid confusion with original $envs.

Code:

$envs = "
1,Dev
1,Test
1,Demo
2,Staging
2,Production
" | ConvertFrom-Csv -Delimiter ","  -header "awsAccount","Environment"

#$awsAccount = Determine-awsAccount
$awsAccount = 1   # assuming Determine-awsAccount returns an integer 1 or 2

#$envs = ([string]($allServers.Environment | Where-Object -property awsAccount -eq $awsAccount | Sort-Object |  Get-unique)).replace(" ",",")
$envsToDisplayInPrompt = @(($envs | Where-Object {$_.awsAccount -eq $awsAccount}).Environment)

$title = "Deploy into which environment"
$message = "Please select which environment you want to deploy into"
$options = [System.Management.Automation.Host.ChoiceDescription[]]($envsToDisplayInPrompt)
$result = $host.ui.PromptForChoice($title, $message, $options, 0)

Output:

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Jun 26, 2017 at 14:02

G42

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3 Comments

Dicky Moore Over a year ago

That's awesome. So is the main change that you have used a different kind of variables? I can see it works, but can't see how.

Dicky Moore Over a year ago

I changed the condition to $_.awsAccount -like ""+$awsAccount+"" to get it to work.

G42 Over a year ago

@RichardMoore Glad to here it's working. The main change is to the line $envs = ([string](.. as I'm not convinced this is correctly returning the string array required by $options =.... You can test this using Write-Host $env after this line and seeing what it prints. Using the same variable name is normally fine; I'm using different one for clarity.

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