topic Re: Working Examples of WebAction.Request in Developer

Working Examples of WebAction.Request

rtaylor — Fri, 31 Jul 2020 18:13:02 GMT

Hello,

I'm looking for any working examples of using WebAction.Request?

Also, does anyone know the syntax of an action type?

Thank you

Re: Working Examples of WebAction.Request

lbendlin — Fri, 31 Jul 2020 21:22:51 GMT

See this thread

https://community.powerbi.com/t5/Issues/WebAction-Request-Method-throwing-Object-reference-not-set-to/idi-p/508010

Syntax would be (for example)

web2 = WebAction.Request(WebMethod.Post,URL,[Content = data, Headers = headers, ManualStatusHandling = {404, 400}]),

Any particular reason you need to use this versus Web.Contents ?

Re: Working Examples of WebAction.Request

rtaylor — Fri, 31 Jul 2020 23:56:44 GMT

Thanks for the example.

The problem is that syntax brings up a credential error when executed. The credential request option pops up over and over again.

Even something as simple as WebAction.Request(WebMethod.Get,"https://www.sdsu.edu/",[ManualStatusHandling = {404, 400}]) causes the same error

>Any particular reason you need to use this versus Web.Contents ?

Two reasons.

1. I'm hoping that Value. Metadata with WebAction.Request will show all the the response headers where Web.Contents shows null

2. If that doesn't work, may be WebMethod.Put will allow me to pass the headers to another request

Do you have any experience with using "Actions"?

Re: Working Examples of WebAction.Request

lbendlin — Sat, 01 Aug 2020 00:07:16 GMT

I get the same error as in the thread I linked to. For now I am ok with just using Web.Contents even if it is sometimes a bit weird. Here is an example of a call against Microsoft's own REST API that requires some creative result wrangling because they don't adhere to simple HTTP standards.

(GatewayId as text, ConnectionId as text) => let JsonData = try Json.Document(Web.Contents("https://api.powerbi.com/v1.0/myorg/gateways/" & GatewayId & "/datasources/" & ConnectionId & "/status", [Headers=[Authorization=Authorization]])), value = if JsonData[Error][Message]="We reached the end of the buffer." then "True" else "False" in value

A "gateway connection is good" 200 response is hampered by an empty return body that I have to mitigate separately. Maybe you can do something similar with your web request.

Re: Working Examples of WebAction.Request

rtaylor — Sat, 01 Aug 2020 18:14:03 GMT

Yeah its not that I can't use web.contents. Its that the nature of web.contents hides the response headers from Value.Metadata. I'm hoping/praying WebAction.Request won't have the same restrictions.

Re: Working Examples of WebAction.Request

lbendlin — Sat, 01 Aug 2020 19:47:34 GMT

If you are a pro license holder you can raise a ticket with Microsoft. This API call seems to be broken since a long time already.

Re: Working Examples of WebAction.Request

rtaylor — Sat, 01 Aug 2020 20:08:07 GMT

Yeah, I can't raise a ticket because my company won't approve the purchase at this time. I'm thinking of just paying $10 and getting a few tickets answered and resolved.