筛选增加多选功能

frontend/src/features/listings/composables/useListingQuery.ts

@@ -18,6 +18,10 @@ export function useListingQuery(
   const hasMoreListings = ref(true)
   let listingRequestSeq = 0
 
+  function joinCSV(values: string[]) {
+    return values.filter(Boolean).join(',') || undefined
+  }
+
   function buildListingQuery(page: number): PublicListingQuery {
     return {
       page,
@@ -26,12 +30,12 @@ export function useListingQuery(
       sort: sortBy.value,
       zone: activeZone.value,
       server: filters.server,
-      region: filters.region,
-      login_method: filters.loginMethod,
-      rank: filters.rank,
-      insurance: filters.insurance,
-      stamina: filters.stamina,
-      load: filters.load,
+      region: joinCSV(filters.region),
+      login_method: joinCSV(filters.loginMethod),
+      rank: joinCSV(filters.rank),
+      insurance: joinCSV(filters.insurance),
+      stamina: joinCSV(filters.stamina),
+      load: joinCSV(filters.load),
       skin_group: filters.skinGroup,
       skin_name: filters.skinName,
       min_coin: filters.minCoin,