Unable to process http delete request using powershell curl command - powershell

Question

PS C:\> $postParams = #{eventId='235'}
PS C:\> curl -Method DELETE -Uri http://localhost:8080/eventlist/api/v1/events -Body $postParams
curl : Error deleting event
At line:1 char:1
+ curl -Method DELETE -Uri http://localhost:8080/eventlist/api/v1/events -Body $po ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], Web
eption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
However, if I am trying to delete like
curl -Method DELETE -Uri http://localhost:8080/eventlist/api/v1/events?eventId=235
it works
Why is not working in the first way using $postParams ?

Answer 1

This is not working
PS C:\Users\> $postParams = "{eventId='$eventId'}"
PS C:\Users\> Invoke-WebRequest -Method POST -Uri "http://localhost:8080/eventlist/api/v1/events" -Body $postParams
Invoke-WebRequest : Error creating event
At line:1 char:1
+ Invoke-WebRequest -Method POST -Uri "http://localhost:8080/eventlist/api/v1/even ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
eption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
This is working
PS C:\> Invoke-WebRequest -Method DELETE -Uri 'http://localhost:8080/eventlist/api/v1/events?eventId=235'
StatusCode : 200
StatusDescription : OK
Content : Event deleted successfully
RawContent : HTTP/1.1 200 OK
Content-Length: 26
Content-Type: text/plain;charset=ISO-8859-1
Date: Mon, 20 Feb 2017 12:27:46 GMT
Server: Apache-Coyote/1.1
Event deleted successfully
Forms : {}
Headers : {[Content-Length, 26], [Content-Type, text/plain;charset=ISO-8859-1], [Date, Mon, 20 Feb 2017
12:27:46 GMT], [Server, Apache-Coyote/1.1]}
Images : {}
InputFields : {}
Links : {}
ParsedHtml : mshtml.HTMLDocumentClass
RawContentLength : 26

Answer 2

EDIT
It's failing because DELETE isn't a POST command.
The code below is untested.
To recreate the DELETE in PowerShell, your syntax needs to be:
$eventId=235
Invoke-WebRequest -Method DELETE -Uri "http://localhost:8080/eventlist/api/v1/events?eventId=$eventId"
ORIGINAL POST
This relates to the commandline app curl, not the PowerShell curl which is an alis for Invoke-WebRequest
It's failing for two reasons, The first one is that DELETE isn't a POST command. The second, is that you're trying to pass a PowerShell object into a commandline application.
The code below is untested.
To recreate the DELETE in PowerShell, your syntax needs to be:
$eventId=235
&curl -Method DELETE -Uri "http://localhost:8080/eventlist/api/v1/events?eventId=$eventId"
A POST command could be like this (depending on your endpoint):
$eventId=235
$postParams = "{eventId='$eventId'}"
&curl -H "Content-Type: application/json" -X POST -d $postParams 'http://localhost:8080/eventlist/api/v1/events'
Note, the body is a json string, not a PowerShell object.