I have an odd problem. I'm getting some data back from an API and storing it in $response
The result looks like this (I've changed the names and IDs):
accountId : 1234
secureScoreProgress : #{startDate=2022-12-12 00:00:00.000; endDate=2023-01-26 00:00:00.000; totalDays=2738; minScore=76; maxScore=534.18; averageScore=257.33; data=System.Object[]}
monitoredAccounts : #{total=479; data=System.Object[]}
accountIdToNameMap : #{1234=Apple; 5432=Microsoft; 2584=Tesla; 7533=Ben and Jerry; 7534=Micool Paul Inc; 7549=AGLX; 7558=Samsung}
I'm interested in the 'accountIdToNameMap' section, so I store it to an object like so:
$accounts = $response.accountIdToNameMap
This returns the following list:
1234 : Apple
5432 : Microsoft
2584 : Tesla
7533 : Ben and Jerry
7534 : Micool Paul Inc
7549 : AGLX
7558 : Samsung
If I try to do a foreach on the list, it only loops once and outputs that whole list in one go.
I've tried to ConvertFrom-JSON but that throws Invalid JSON primitive: .
I've tried to ConvertTo-JSON, which works, but I still can't loop through the results. After ConvertTo-JSON, the result looks like this:
{
"1234": "Apple",
"5432": "Microsoft",
"2584": "CH Hausmann",
"7533": "Hughes Fowler Carruthers",
"7534": "Tempest Resourcing",
"7549": "Cream UK Ltd",
"7558": "Illuminatis / Scout Data"
}
What am I doing wrong?
If I try to do a foreach on the list
It's not a list, it's an object. You can enumerate its properties by accessing the hidden psobject member:
foreach ($property in $accounts.psobject.Properties) {
"The `$accounts object has a property named '$($property.Name)' with value '$($property.Value)'"
}
You can use this to build a hashtable (an unordered dictionary):
$idToNameMap = #{}
foreach ($property in $accounts.psobject.Properties) {
$idToNameMap[$property.Name] = $property.Value
}
Now you can easily use it as a lookup table:
$idToNameMap['1234'] # resolves to "Apple"
Related
So, I'm rather new to PowerShell and just can't figure out how to use the arrays/lists/hashtables. I basically want to do the following portrayed by Python:
entries = {
'one' : {
'id': '1',
'text': 'ok'
},
'two' : {
'id': '2',
'text': 'no'
}
}
for entry in entries:
print(entries[entry]['id'])
Output:
1
2
But how does this work in PowerShell? I've tried the following:
$entries = #{
one = #{
id = "1";
text = "ok"
};
two = #{
id = "2";
text = "no"
}
}
And now I can't figure out how to access the information.
foreach ($entry in $entries) {
Write-Host $entries[$entry]['id']
}
=> Error
PowerShell prevents implicit iteration over dictionaries to avoid accidental "unrolling".
You can work around this and loop through the contained key-value pairs by calling GetEnumerator() explicitly:
foreach($kvp in $entries.GetEnumerator()){
Write-Host $kvp.Value['id']
}
For something closer to the python example, you can also extract the key values and iterate over those:
foreach($key in $entries.get_Keys()){
Write-Host $entries[$key]['id']
}
Note: You'll find that iterating over $entries.Keys works too, but I strongly recommend never using that, because PowerShell resolves dictionary keys via property access, so you'll get unexpected behavior if the dictionary contains an entry with the key "Keys":
$entries = #{
Keys = 'a','b'
a = 'discoverable'
b = 'also discoverable'
c = 'you will never find me'
}
foreach($key in $entries.Keys){ # suddenly resolves to just `'a', 'b'`
Write-Host $entries[$key]
}
You'll see only the output:
discoverable
also discoverable
Not the Keys or c entries
To complement Mathias R. Jessen's helpful answer with a more concise alternative that takes advantage of member-access enumeration:
# Implicitly loops over all entry values and from each
# gets the 'Id' entry value from the nested hashtable.
$entries.Values.Id # -> 2, 1
Note: As with .Keys vs. .get_Keys(), you may choose to routinely use .get_Values() instead of .Values to avoid problems with keys literally named Values.
I'm struggling with filtering the sessionId from the following output:
status messages data
------ -------- ----
Success {#{code=success; message=Success}} #{sessionId=0662c4d429bb51ef772e875f9c9b3a46; faSessionId=qfvio0382283ihbknhfh70kvn4; phpSessionId=qfvio0382283ihbknhfh70kvn4}
I've tried with the following:
$sessionId = $response | select "data"
This is returning:
data
----
#{sessionId=f77d5bfb5bdc65163e605d9c7edbcaed; faSessionId=hrsbd5iuq8i6dttfhimpm5baf1; phpSessionId=hrsbd5iuq8i6dttfhimpm5baf1}
I can't get it working to only extract the sessionId part.
It would be great if anyone could assist with the correct PowerShell code to obtain this.
It might help to think of the object you're working with like this, in JSON.
{
"Status": "Success",
"Messages": {
"code": "success",
"message": "Success"
},
"Data": {
"faSessionId": "qfvio0382283ihbknhfh70kvn4",
"phpSessionId": "qfvio0382283ihbknhfh70kvn4",
"sessionId": "0662c4d429bb51ef772e875f9c9b3a46"
}
}
You want the sessionId propeerty so you're selecting Data, but then you're finding that Data actually has those other properties of phpSessionId and faSessionId. Fortunately you have two approaches to get what you need.
Continue using the Select-Object cmdlet
You are already using this cmdlet but using the alias of Select, so you can keep using Select-Object to drill down all the way to the center of the Earth basically.
$response | Select-Object -ExpandProperty Data | Select-Object -ExpandProperty sessionId
>0662c4d429bb51ef772e875f9c9b3a46
Drill into the property you want with Dereferencing
This is the more programmery way to do it but is very popular. It's also called dot-notation.
$response.Data.sessionId
0662c4d429bb51ef772e875f9c9b3a46
I have a psobject that is created from the JSON output of an Invoke-RestMethod. My intention is to change one value, convert back to JSON, then add back to the application REST API with another Invoke-RestMethod. I have done this several times in the past with the same REST API so I'm not sure why this one isn't working.
The psobject $restOut looks like this:
id: 123
limit: #{limitMb=0; limitPercent=0}
The next block of code changes the id if the new id I want isn't already set
$newId = 456
if($restOut.id -ne $newId){
$restOut.id = $newId
$inputJson = $restOut | ConvertTo-Json -Depth 2
Invoke-RestMethod -Uri $restURl -Method PUT -Body $inputJson
}
I'm expecting $inputJson to look like this (and the psobject $restOut does match the expectation):
{
"id": "456",
"limit": {
"limitMb": 0,
"limitPercent": 0
}
}
But what I'm actually getting is:
{
"id": {
"value": "456",
"id": "456"
},
"limit": {
"limitMb": 0,
"limitPercent": 0
}
}
As said, I've done this exact manipulation many times in other scripts targeting the same software API, and am just at a loss with the behavior this time. Any help is appreciated. Thanks!
Easy fix
This was a simplified sample. In my actual script $newId = 456 was actually being assigned from another API call. Therefore it was also an object. Simply quoting it in the line that changes the id to make it a string fixed the issue:
$restOut.id = "$newId"
instead of
$restOut.id = $newId
I want to retrieve value of a field present in json object. The filed name has dots and hyphen.
For eg:
$json = #"
{
"Stuffs":
{
"Name.new-name": "Darts",
"Type": "Fun Stuff"
}
}
"#
How can I get the value Darts?
I tried some approaches like
$x = $json | ConvertFrom-Json
$x.Stuffs.(Name.new-name)
But it doesn't work.
Try this
$x.Stuffs.'Name.new-name'
I am using the new query parameters API https://msdn.microsoft.com/en-us/library/mt845781.aspx
I am able to call parameters fine, however when trying to set them I get an error message. After parsing the error I get this
VERBOSE: POST https://api.powerbi.com/v1.0/myorg/groups/e7229a42-46ef-4d80-b8ca-e42909509dbb/datasets/5ef116d7-917... with -1-byte payload
error : #{code=InvalidRequest; message=Dataset Parameters list is invalid in 5ef116d7-9179-40a2-8a30-a657265dfe4a. Reason: Empty;
target=5ef116d7-9179-40a2-8a30-a657265dfe4a}
I don't understand because the parameters list is not empty? I have created a physical table with the parameters and tried and then also created a list of values in the manage parameters settings and it still gives the same error.
PowerShell -
$parametername = "YourData"
$parametervalue = "Company1"
#POST body
$postParams = #{
"name" = "$parametername"
"newValue" = "$parametervalue"
}
JSON from documentation (I am not including updatedetails in PowerShell because I don't know how)
"updateDetails": [
{
"name": "MaxId",
"newValue": "5678"
},
{
"name": "StrParam",
"newValue": "Another Hello"
}
]
}
You can find the solution here
You just need to enable the Load for the parameters