fixes

app/model/category.go

@@ -10,7 +10,8 @@ type ScannedCategory struct {
 	LinkRewrite string `gorm:"column:link_rewrite"`
 	IsoCode     string `gorm:"column:iso_code"`
 
-	Visited bool //this is for internal backend use only
+	Visited bool   // this is for internal backend use only
+	Filter  string // filter applicable to this category
 }
 
 type Category struct {
@@ -25,6 +26,7 @@ type CategoryParams struct {
 	CategoryID  uint   `json:"category_id" form:"category_id"`
 	LinkRewrite string `json:"link_rewrite" form:"link_rewrite"`
 	Locale      string `json:"locale" form:"locale"`
+	Filter      string `json:"filter" form:"filter"`
 }
 
 type CategoryInBreadcrumb struct {