ConvertFrom-Json is giving System.Object[] for some sections in Powershell - powershell

Question

I am very new to Windows PowerShell. I am trying to fire ConvertFrom-Json command for the below Json :-
$ret=[{"ID":"ABC","type":"Test","code":"AD","enabled":true,"sourceMappings":[{"source":"Test","values":[{"code":"AD","value":"Anderson","enabled":true,"canonicalValue":true,"downStreamDefaultValue":true}]}],"startDate":0,"endDate":0,"updatedBy":"YY","updateDate":1590085877449,"version":4}]
and I am getting below output :-
ID : ABC
type : Test
code : AD
enabled : True
sourceMappings : {#{source=Test; values=System.Object[]}}
startDate : 0
endDate : 0
updatedBy : YY
updateDate : 1590085877449
version : 4
If you notice the values been assigned to System.Object[].Please help me how to get the original values in the output.

Answer 1

I think the converting is all fine.
You can access the values via:
$tmp = $ret | ConvertFrom-Json
$tmp.sourcemappings
$tmp.sourcemappings.values.code
and so on

Answer 2

Lets first make your json file more readable:
{
"ID":"ABC",
"type":"Test",
"code":"AD",
"enabled":true,
"sourceMappings":[{"source":"Test","values":[{"code":"AD","value":"Anderson","enabled":true,"canonicalValue":true,"downStreamDefaultValue":true}]}],
"startDate":0,
"endDate":0,
"updatedBy":"YY",
"updateDate":1590085877449,
"version":4
}
Second of all, your way of defining json variable is incorrect. In powershell, you need to define json variables is surrounding the json content with #" and "#. The correct way to set $ret equal to your json file would be like this:
$ret=#"
{
"ID":"ABC",
"type":"Test",
"code":"AD",
"enabled":true,
"sourceMappings":[{"source":"Test","values":[{"code":"AD","value":"Anderson","enabled":true,"canonicalValue":true,"downStreamDefaultValue":true}]}],
"startDate":0,
"endDate":0,
"updatedBy":"YY",
"updateDate":1590085877449,
"version":4
}
"#
Where $ret would be considered a string data type. You could then convert the json with:
$var = ConvertFrom-Json -InputObject $ret
Where you could now interact with it like normal. For example, $var.ID would output ABC and if you tried checking the object type again with $var.gettype() it would output:
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True False PSCustomObject System.Object
Where the type would be a PSCustomObject
Update: It seems as if I misunderstood the question, my bad!
The reason it says
sourceMappings : {#{source=Test; values=System.Object[]}}
Is because powershell doesn't want to display the whole value since there are many components in the value. You can view the values in the sourceMappings class with $var.sourceMappings where the output would be:
source values
------ ------
Test {#{code=AD; value=Anderson; enabled=True; canonicalValue=True; downStreamDefaultValue=True}}
and you can keep on viewing deeper if you add on like $var.sourceMappings.code etc. etc.