update as per the comments

Author: darshanhs90

src/ResourceManager/Resources/ChangeLog.md

@@ -18,6 +18,8 @@
         - Additional information about change #1
 -->
 ## Current Release
+* Fixed issue where Get-AzureRMRoleAssignment would result in a assignments without roledefiniton name for custom roles
+    - Users can now use Get-AzureRMRoleAssignment with assignments having roledefinition names irrespective of the type of role
 
 ## Version 4.4.1
 

src/ResourceManager/Resources/Commands.Resources/Models.Authorization/AuthorizationClient.cs

@@ -224,12 +224,15 @@ public List<PSRoleAssignment> FilterRoleAssignments(FilterRoleAssignmentsOptions
 
                 var tempResult = AuthorizationManagementClient.RoleAssignments.List(
                     new Rest.Azure.OData.ODataQuery<RoleAssignmentFilter>(f => f.PrincipalId == principalId));
-                if (!string.IsNullOrEmpty(options.Scope)) {
+                if (!string.IsNullOrEmpty(options.Scope)) 
+                {
                     result.AddRange(tempResult.FilterRoleAssignmentsOnRoleId(AuthorizationHelper.ConstructFullyQualifiedRoleDefinitionIdFromScopeAndIdAsGuid(currentSubscription, options.RoleDefinitionId))
-                    .ToPSRoleAssignments(this, ActiveDirectoryClient, options.Scope, options.ExcludeAssignmentsForDeletedPrincipals));
-                } else {
+                        .ToPSRoleAssignments(this, ActiveDirectoryClient, options.Scope, options.ExcludeAssignmentsForDeletedPrincipals));
+                } 
+                else 
+                {
                     result.AddRange(tempResult.FilterRoleAssignmentsOnRoleId(AuthorizationHelper.ConstructFullyQualifiedRoleDefinitionIdFromScopeAndIdAsGuid(currentSubscription, options.RoleDefinitionId))
-                    .ToPSRoleAssignments(this, ActiveDirectoryClient, AuthorizationHelper.GetSubscriptionScope(currentSubscription), options.ExcludeAssignmentsForDeletedPrincipals));
+                        .ToPSRoleAssignments(this, ActiveDirectoryClient, AuthorizationHelper.GetSubscriptionScope(currentSubscription), options.ExcludeAssignmentsForDeletedPrincipals));
                 }
 
                 while (!string.IsNullOrWhiteSpace(tempResult.NextPageLink))
@@ -274,9 +277,8 @@ public List<PSRoleAssignment> FilterRoleAssignments(FilterRoleAssignmentsOptions
                 while (!string.IsNullOrWhiteSpace(tempResult.NextPageLink))
                 {
                     tempResult = AuthorizationManagementClient.RoleAssignments.ListNext(tempResult.NextPageLink);
-                    result.AddRange(tempResult
-                   .FilterRoleAssignmentsOnRoleId(AuthorizationHelper.ConstructFullyQualifiedRoleDefinitionIdFromScopeAndIdAsGuid(currentSubscription, options.RoleDefinitionId))
-                   .ToPSRoleAssignments(this, ActiveDirectoryClient, AuthorizationHelper.GetSubscriptionScope(currentSubscription), options.ExcludeAssignmentsForDeletedPrincipals));
+                    result.AddRange(tempResult.FilterRoleAssignmentsOnRoleId(AuthorizationHelper.ConstructFullyQualifiedRoleDefinitionIdFromScopeAndIdAsGuid(currentSubscription, options.RoleDefinitionId))
+                        .ToPSRoleAssignments(this, ActiveDirectoryClient, AuthorizationHelper.GetSubscriptionScope(currentSubscription), options.ExcludeAssignmentsForDeletedPrincipals));
                 }
             }