add filter key to CampaignItemModel

@@ -1193,6 +1193,7 @@ public class swiftApi {
         private var category_id: String?
         private var start_date: String?
         private var end_date: String?
+        private var filter: String? // supermarket - free - contest etc
         
         public init() {
             self.index_url = ""
@@ -1223,6 +1224,7 @@ public class swiftApi {
             self.category_id = ""
             self.start_date = ""
             self.end_date = ""
+            self.filter = ""
         }
 
         public init(dictionary: [String: Any]) {
@@ -1277,6 +1279,7 @@ public class swiftApi {
                 self.banner_img = extra_fields["Banner_img"] as? String ?? ""
                 self.banner_title = extra_fields["Banner_title"] as? String ?? ""
                 self.category_id = extra_fields["category_id"] as? String ?? ""
+                self.filter = extra_fields["filter"] as? String ?? ""
             } else {
                  self.subcategory = ""
                  self.loyaltyCampaignId = ""
@@ -1288,6 +1291,7 @@ public class swiftApi {
                 self.category_title = ""
                 self.banner_img = ""
                 self.banner_title = ""
+                self.filter = ""
             }
             
             // let extra_fields = dictionary["extra_fields"] as AnyObject
@@ -1542,6 +1546,15 @@ public class swiftApi {
                 self.end_date = newValue
             }
         }
+
+        public var _filter: String? {
+            get { // getter
+                return self.filter
+            }
+            set(newValue) { //setter
+                self.filter = newValue
+            }
+        }
     }
 
     public class CampaignDataModel {