--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/implab/data/_ModelBase.js	Thu Jun 01 13:20:03 2017 +0300
@@ -0,0 +1,37 @@
+define(["dojo/_base/declare"], function(declare) {
+    
+    return declare(null, {
+        dataContext : null,
+        idField : "id",
+        loaded : false,
+        
+        constructor : function(opts){
+            if (opts) {
+                if(opts.dataContext)
+                    this.dataContext = opts.dataContext;
+                if(opts.id)
+                    this[this.idField] = opts.id;
+            }
+        },
+        
+        getId : function() {
+            return this[this.idField];
+        },
+        
+        attach : function(id, dc) {
+            if (this.dataContext)
+                throw new Error("The object is already attached");
+            this[this.idField] = id;
+            this.dataContext = dc;
+        },
+        
+        isAttached : function() {
+            return this.dataContext ? true : false; 
+        },
+        
+        onPopulate : function() {
+            this.loaded = true;
+        }
+        
+    });
+});
\ No newline at end of file