Fix EMLParty to serialize parties with multiple roles correctly

Made an error in the last commit where in the case that no role is assigned in the EMLParty model, the default "Associated Party" role would have raised an error

Relates to issue #994

src/js/models/metadata/eml211/EMLParty.js

@@ -16,7 +16,7 @@ define(['jquery', 'underscore', 'backbone', 'models/DataONEObject'],
 				fax: [],
 				email: [],
 				onlineUrl: [],
-				role: [],
+				roles: [],
 				references: null,
 				userId: [],
 				xmlID: null,
@@ -106,7 +106,7 @@ define(['jquery', 'underscore', 'backbone', 'models/DataONEObject'],
 			//Set the text fields
 			modelJSON.organizationName = $(objectDOM).children("organizationname, organizationName").text() || null;
 			modelJSON.positionName     = $(objectDOM).children("positionname, positionName").text() || null;
-			modelJSON.role 			       = $(objectDOM).find("role").each(function(i,r){
+			modelJSON.roles 			     = $(objectDOM).find("role").each(function(i,r){
                                                                     $(r).text()
                                                                   });
 
@@ -572,24 +572,26 @@ define(['jquery', 'underscore', 'backbone', 'models/DataONEObject'],
 			}
 			//Otherwise, change the value of the role element
 			else {
-				//If for some reason there is no role, create a default role
-				if( !this.get("role") )
-					var roles = ["Associated Party"];
-				else
-					var roles = this.get("role");
+				// If for some reason there is no role, create a default role
+				if( !this.get("roles") ){
+          var roles = ["Associated Party"];
+        } else {
+          var roles = [];
+          this.get("roles").each(function(i, role){
+            roles.push($(role).text());
+          });
+        }
 
-        roles.each(function(i, role){
-          var roleText = $(role).text();
+        _.each(roles, function(role, i){
           var roleSerialized = $(objectDOM).find("role");
           if(roleSerialized.length){
-            $(roleSerialized[i]).text(roleText)
+            $(roleSerialized[i]).text(role)
           } else {
-          	this.getEMLPosition(objectDOM, "role").after( $(document.createElement("role")).text(roleText) );
+            roleSerialized = $(document.createElement("role")).text(role);
+          	this.getEMLPosition(objectDOM, "role").after( roleSerialized );
           }
         });
 
-
-
 			}
 
 			//XML id attribute