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packages/backend-core/src/sql/sql.ts

@@ -246,11 +246,7 @@ class InternalBuilder {
         return `[${value.join(",")}]`
       }
       if (this.client === SqlClient.POSTGRES) {
-        iterate(mode, (key: string, value: any) => {
-          if (!Array.isArray(value)) {
-            value = [value]
-          }
-
+        iterate(mode, (key: string, value: Array<any>) => {
           const wrap = any ? "" : "'"
           const op = any ? "\\?| array" : "@>"
           const fieldNames = key.split(/\./g)
@@ -265,11 +261,7 @@ class InternalBuilder {
         })
       } else if (this.client === SqlClient.MY_SQL) {
         const jsonFnc = any ? "JSON_OVERLAPS" : "JSON_CONTAINS"
-        iterate(mode, (key: string, value: any) => {
-          if (!Array.isArray(value)) {
-            value = [value]
-          }
-
+        iterate(mode, (key: string, value: Array<any>) => {
           query = query[rawFnc](
             `${not}COALESCE(${jsonFnc}(${key}, '${stringifyArray(
               value
@@ -278,11 +270,7 @@ class InternalBuilder {
         })
       } else {
         const andOr = mode === filters?.containsAny ? " OR " : " AND "
-        iterate(mode, (key: string, value: any) => {
-          if (!Array.isArray(value)) {
-            value = [value]
-          }
-
+        iterate(mode, (key: string, value: Array<any>) => {
           let statement = ""
           for (let i in value) {
             if (typeof value[i] === "string") {

packages/server/src/sdk/app/rows/search.ts

@@ -2,6 +2,7 @@ import {
   EmptyFilterOption,
   Row,
   RowSearchParams,
+  SearchFilterOperator,
   SearchFilters,
   SearchResponse,
   SortOrder,
@@ -65,11 +66,37 @@ export function removeEmptyFilters(filters: SearchFilters) {
   return filters
 }
 
+// The frontend can send single values for array fields sometimes, so to handle
+// this we convert them to arrays at the controller level so that nothing below
+// this has to worry about the non-array values.
+function fixupFilterArrays(filters: SearchFilters) {
+  const arrayFields = [
+    SearchFilterOperator.ONE_OF,
+    SearchFilterOperator.CONTAINS,
+    SearchFilterOperator.NOT_CONTAINS,
+    SearchFilterOperator.CONTAINS_ANY,
+  ]
+  for (const searchField of arrayFields) {
+    const field = filters[searchField]
+    if (field == null) {
+      continue
+    }
+
+    for (const key of Object.keys(field)) {
+      if (!Array.isArray(field[key])) {
+        field[key] = [field[key]]
+      }
+    }
+  }
+  return filters
+}
+
 export async function search(
   options: RowSearchParams
 ): Promise<SearchResponse<Row>> {
   const isExternalTable = isExternalTableID(options.tableId)
   options.query = removeEmptyFilters(options.query || {})
+  options.query = fixupFilterArrays(options.query)
   if (
     !dataFilters.hasFilters(options.query) &&
     options.query.onEmptyFilter === EmptyFilterOption.RETURN_NONE

packages/types/src/sdk/search.ts

@@ -54,7 +54,7 @@ export interface SearchFilters {
     [key: string]: any[]
   }
   [SearchFilterOperator.CONTAINS]?: {
-    [key: string]: any[] | any
+    [key: string]: any[]
   }
   [SearchFilterOperator.NOT_CONTAINS]?: {
     [key: string]: any[]