Getting an error when trying to run some examples

[stefanstranger]

When I run the following from the samples folder I get the following error:

D:\Install\Node\edge-powershell-master\samples\tryPowerShell> node .\test.js

D:\Install\Node\edge-powershell-master\samples\tryPowerShell\test.js:16
if (error) throw error;
^
System.AggregateException: One or more errors occurred. ---> System.InvalidCastException: Unable to cast object of type
'System.String' to type 'System.Collections.Generic.IDictionary2[System.String,System.Object]'. at Edge.PS.EdgePowerShell.<InvokeScript>d__2.MoveNext() in d:\Install\Node\edge-powershell-master\src\Edge.PowerShell \Edge.PowerShell\EdgePowerShell.cs:line 36 --- End of inner exception stack trace --- ---> (Inner Exception #0) System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Col lections.Generic.IDictionary2[System.String,System.Object]'.
at Edge.PS.EdgePowerShell.d__2.MoveNext() in d:\Install\Node\edge-powershell-master\src\Edge.PowerShell
\Edge.PowerShell\EdgePowerShell.cs:line 36<---

What am I doing wrong?

I've installed Node.js 0.8.19 and Edge.

/Stefan

[dfinke]

Thanks for trying Stefan. I'll get back to you shortly after I investigate.

[stefanstranger]

Thnx

-----Original Message-----
From: "Doug Finke" [email protected]
Sent: ‎20-‎3-‎2013 20:53
To: "dfinke/edge-powershell" [email protected]
Cc: "stefanstranger" [email protected]
Subject: Re: [edge-powershell] Getting an error when trying to run some examples (#7)

Thanks for trying Stefan. I'll get back to you shortly after I investigate.

---

Reply to this email directly or view it on GitHub:
#7 (comment)

[dfinke]

Ok, sorry about that. I was in the middle of spiking out some ideas and checked them in. This version spins up a web server and serves up PowerShell files. So... Try this

node .\server.js

Then launch a browser and use this url

http://localhost:8080/powershell/test

You should get this

[
  4,
  16,
  36,
  64,
  100,
  144,
  196,
  256,
  324,
  400
]

You can see that it is executing test.ps1. It can also take two parameters like this.

http://localhost:8080/powershell/test?max=100&min=90

[
  8100,
  8464,
  8836,
  9216,
  9604,
  10000
]

You can create your own PowerShell files. Save them in the edge-powershell\samples\tryPowerShell directory. You execute it with the base url

http://localhost:8080/powershell

Then the base name of the file without the ps1 extension.

http://localhost:8080/powershell/myscript

Passing parameters follow the query string convention

http://localhost:8080/powershell/myscript?firstname=john&lastname=doe

I'm working towards merging the solution where you can run this as standalone or through a web server.

[cdhunt]

Installed Express and set $env:PORT to an available port and it worked as expected.

So, I created this script.

param($script = 'Get-Process')

Invoke-Expression $script

It throws an error

                res.json(results.Result);
                                ^
TypeError: Cannot read property 'Result' of undefined

Simple scripts like "1..3" work. Maybe this has something to do with #6.

If I pipe to Select-Object -Property * it doesn't crash but returns an array of empty json objects.

[
  {},
  {},
  {},
  {},
  {}
]

[dfinke]

I believe it may work if you pipe it to Out-String

[cdhunt]

Yes, that works as well as ConvertTo-JSON, but like you said, that's just a big string, not an object.

[dfinke]

Yep, so getting an "object" back is the challenge. I'm not sure how, I have some guesses. I'm wondering if/how PowerShell Web Access does it.