Using Class

PowerShell Help
1

Hi Everyone,

I have this Log Class in a .psm1 file, in the ‘Bin\Log’ folder:

c:\Program\Bin\Log\Log.psm1:

Class Log
{
	LogToFile()
	{
		
	}
}

Another class in a .psm1 file, in the ‘Bin\Mycar’ folder.

c:\Program\Bin\Car\MyCar.psm1:

using module c:\Program\Bin\Log\Log.psm1
Class MyCar
{
	DoStuff()
	{
		[Log]::DoStuff()
	}
}

And the PS1 file to wrap up everything.

c:\Program\start.ps1

using module c:\Program\Bin\Car\MyCar.psm1
using module c:\Program\Bin\Log\Log.psm1
[Log]::DoStuff()
[MyCar]::DoStuff()

Importing the classes from the PSM1 files with the “using module” command in the PS1 file works just fine, but if I want to use the Log Class within the MyCar class, it doesn’t work.

What am I doing wrong ?

Thanks in advance.
Nuno

2

It’s a bit tricky to do this with the classes in separate files. Typically what I see done is that when someone builds a module, the classes/enums/etc are often all compiled into a single file during the build step of their publishing pipeline.

This helps to circumvent the weird issues with classes like this.

3

All the imported files from the ps1 start script work fine… The problem is when I use a relative path from another psm1.

I have a psm1 file with a Log class which I need to use everywhere.

How am I supposed to use the class.

 

 

4

You log class doesn’t have a DoStuff method defined.

Try inheritance.

using module c:\Program\Bin\Log\Log.psm1
Class MyCar:Log
{
	DoStuff()
	{
		$this.LogToFile()
	}
}
5

It’s not so much that OP wants one class to inherit another. They want one class to return an object type of the other as the returned object from a method… if I’m understanding the intention here.

If you need a relative path, I’d make use of $PSScriptRoot; relative paths are fragile and easily break.

 

6

I have already tried the $psroot. It does not work in the using module. :frowning:

I only need to log all errors from all my classes, which are in separated files in different folders. Using the full path for the log class file work. But if I move the script to another computer/location I have to change all references…

7

Put the path in quotes?

using module "$PSScriptRoot\ClassFile.psm1"
8

[Powershell] “$PSScriptRoot\Modules\Log\RooxLog.psm1” is not a valid value for using name.