c# - Only primitive types or enumeration types are supported in this context -

i've seen lots of questions on topic, haven't been able sort through of them solve issue i'm seeing. have activities entity tracks employee assigned employee created record , updated it. if remove `where a.assignedemployee == currentuser' line of code, don't run time error below.

unable create constant value of type 'datamodels.employee'. primitive types or enumeration types supported in context.

controller

var query = in db.activities             a.assignedemployee == currentuser             a.iscomplete == false             orderby a.duedate             select a; return view(query.tolist()); 

view

@model ienumerable<data.datamodels.activity> .......... 

my guess error indicates ef cannot translate equality operator employee sql (regardless of whether you're assuming referential equality or overridden == operator). assuming employee class has unique identifier try:

var query = in db.activities             a.assignedemployeeid == currentuser.id             a.iscomplete == false             orderby a.duedate             select a; return view(query.tolist());