Passing Named Parameters via an intermediary script

Question

I have two scripts:

Script1.ps1:

param(
[string]$WhoCares = "",
[string]$PassThrough = ""
)

#do a whole bunch of random stuff here...
.\Script2.ps1 $PassThrough

Script2.ps1:

param(
[string]$FirstParameter = "",
[string]$SecondParameter = ""
)

Write-Host "First Parameter is: " $FirstParameter "Second Parmeter is: " $SecondParameter

What I envision doing is something like:

Script1.ps1 -WhoCares one -Passthrough "-FirstParameter Test -SecondParameter Test1"

And then seeing:

First Paramter is Test Second Parameter is Test1

But What I am seeing is

First Parameter is -FirstParameter Test -SecondParameter Test1 Second Parameter is

which is, parameters I want to send to script2 are coming through as a string. How to I pass parameters through an intermediary script

I don't want to modify Script1.ps1 to include every possible parameter, because im using Script1 to setup an environment, logging, etc.

Just use a -PassThru switch on Script2, it will inherit any variables defined in Script1 if you call it from Script1. — JNK
– JNK, Commented Mar 7, 2014 at 15:25

mjolinor · Accepted Answer · 2014-03-07 15:28:38Z

1

I'd change Script1 to splat the Passthrough parameters to Script2:

param(
[string]$WhoCares = "",
[hashtable]$PassThrough = @{}
)

#do a whole bunch of random stuff here...
.\Script2.ps1 @PassThrough

Then pass the Passthrough parameters to Script1 as a hashtable:

$Passthru =
 @{
   FirstParameter = 'Test'
   SecondParameter = 'Test1'
  }

  Script1.ps1 -WhoCares One -Passthrough $Passthru

edited Mar 7, 2014 at 15:28

answered Mar 7, 2014 at 15:21

mjolinor

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1 Comment

EBGreen Over a year ago

Just to be clear, I think splatting requires v3+ iirc. But it is definitely the way to accomplish this.

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