Powershell Like operator invokes REST error - powershell

Question

I am working on a custom PoweShell module picked up from the internet for our BI application.
My question is rather simple, the code below does not work:
Get-QlikDataConnection -filter "name -like 'Data*'"
And throws an error like:
Invoke-RestMethod : The remote server returned an error: (400) Bad Request.
At C:\Program Files\WindowsPowerShell\Modules\Qlik-Cli\1.13\functions\core.ps1:32 char:15
+ ... $result = Invoke-RestMethod -Method $method -Uri $path #params -Web ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebExc
eption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand
However the code below works fine and shows me the correct output:
Get-QlikDataConnection -filter "name eq 'DataPrepAppCache'"
Am I doing something wrong or do some modules not understand a few operators?

Answer 1

After having a look at the source of the module you're using, Qlik-Admin-Utils, I would not use the -filter param, as the input you specify there gets processed by this block within the Invoke-QlikGet cmdlet:
If( $filter ) {
If( $path.contains("?") ) {
$path += "&filter=$filter"
} else {
$path += "?filter=$filter"
}
}
This script appends your filter as a query parameter in the URL, and it doesn't support regular PowerShell formatting, but sends the filter over to qLik's REST API.
If I were writing this, I'd ignore their filtering and do the following:
$Connections = Get-QlikDataConnection
$DataConnection = $Connections | Where name -like "Data*"
This is more likely to just work with less fiddling.
However, if you want to use Qlik's Filter support, I found this so you can read up on the syntax of it here.
It looks like they do offer a filter of their own which might help, it's the Starts With filter, defined as SW, for a syntax of Name sw 'Data'. You might try this and see if it works instead.
Get-QlikDataConnection -filter "name sw 'Data'"