#1723 - added Accept header as parameter

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Added `Add-PnPTeamsChannelUser` which allows members and owners to be added to private channels in Teams [#1735](https://github.com/pnp/powershell/pull/1735)
 - Added `ExcludeVisualPromotedResults` parameter to `Get-PnPSearchConfiguration` which excludes promoted results [#1750](https://github.com/pnp/powershell/pull/1750)
 - Added `MediaTranscription` parameter to `Set-PnPTenantSite` and `Set-PnPSite` cmdlets which when enabled allows videos to have transcripts generated on demand or generated automatically in certain scenarios
+- Added `Accept` parameter to `Invoke-PnPSPRestMethod` cmdlet which if specified will pass the Accept HTTP request header.
 
 ### Changed
 - Changed `Sync-PnPSharePointUserProfilesFromAzureActiveDirectory` to map users based on their Ids instead which should resolve some issues around user identities reporting not to exist. You can use the new `-IdType` option to switch it back to `PrincipalName` if needed.  [#1752](https://github.com/pnp/powershell/pull/1752)

documentation/Invoke-PnPSPRestMethod.md

@@ -128,6 +128,18 @@ Position: 0
 Accept pipeline input: False
 ```
 
+### -Accept
+The Accept HTTP request header. Defaults to 'application/json;odata=nometadata'.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+
+Required: False
+Position: Named
+Accept pipeline input: False
+```
+
 ### -Connection
 Optional connection to be used by the cmdlet. Retrieve the value for this parameter by either specifying -ReturnConnection on Connect-PnPOnline or by executing Get-PnPConnection.
 

src/Commands/Base/InvokeSPRestMethod.cs

@@ -33,6 +33,9 @@ public class InvokeSPRestMethod : PnPSharePointCmdlet
         [Parameter(Mandatory = false)]
         public string ContentType = "application/json";
 
+        [Parameter(Mandatory = false)]
+        public string Accept = "application/json;odata=nometadata";
+
         [Parameter(Mandatory = false)]
         public SwitchParameter Raw;
 
@@ -52,7 +55,12 @@ protected override void ExecuteCmdlet()
 
             using (HttpRequestMessage request = new HttpRequestMessage(method, requestUrl))
             {
-                request.Headers.Add("accept", "application/json;odata=nometadata");
+                if(string.IsNullOrEmpty(Accept))
+                {
+                    Accept = "application/json;odata=nometadata";
+                }
+
+                request.Headers.Add("accept", Accept);
 
                 if (Method == HttpRequestMethod.Merge)
                 {