How to consume Dataverse Custom API from Power Portals?

[Sahil]

Hi All,

Is it possible to consume the Dataverse custom API (unbound) from within Power Portals using JS? If so, please share a sample code for the same.

Thanks in advance!

Regards,

Sahil

[eugenevanstaden]

You cant consume it from Portal, however you can implement the Portal API.
https://docs.microsoft.com/en-us/power-apps/maker/portals/web-api-overview

[eugenevanstaden]

You cant consume it from Portal, however you can implement the Portal API.
https://docs.microsoft.com/en-us/power-apps/maker/portals/web-api-overview

[Sahil]

Hi, I have gone through this documentation already but could not find any details on how to call Dataverse Custom APIs from within Power Portal.

Some Background details:

I created a Custom API record in Dataverse and associated a plugin to the same API.  Now, I need to call this API from Portal with some Input Parameters in the request and get output parameters as the response. 

[Sahil]

I saw this post that talks about how to call custom actions from Portal and we get a custom action for a Custom API as well so shouldn't we be able to consume the APIs in the same way from Portal?

https://debajmecrm.com/call-custom-action-using-webapi-in-powerapps-portals-dynamics-365-portals/ 

[eugenevanstaden · Accepted solution]

You wont be able to call Custom API directly. If you want to consume the Custom API/Custom Action then there are other options.

You can call a Flow, which executes the Custom API, or you can set up a Companion API. I prefer the Companion API approach as its secure - https://docs.microsoft.com/en-us/power-apps/maker/portals/oauth-implicit-grant-flow

You dont want to expose ClientId/Secret in Javascript.

[eugenevanstaden]

Custom Actions via the Portal API was on the roadmap - not sure where it is at in terms of when its in public preview

[Sahil]

Hi,

Based on my analysis/hits and tries so far, I am able to call any custom action and custom API that is bound to the CONTACT entity from Power Portals. But, I am still not able to get the response/output parameters from the API call if it is a success. The below syntax works:

webapi.safeAjax({

type: "POST",

url: "/_api/contacts("ENTER GUID")/Microsoft.Dynamics.CRM.new_contactapi",

contentType: "application/json",

data: JSON.stringify({ "name": "Test" }),

success: function (res, status, xhr){

}

});

[eugenevanstaden]

I have done similar but yes as long as its bound action, if unbound then an issue. Did you check the response header for any output?

[Sahil]

Yea, I tried to check the Response Header in the developer console but nothing is there. However, if you try to create a new record using the Portal API then you get the ID (entityid) of the record in the response header.

I believe that maybe the Power Automate flow (with HTTP trigger) might be an option for me as I need the response parameters back to navigate the portal user accordingly (after custom logic) to the next screen.