From 0dee67b65ba20bf0aaf957b9b46388bfd6ac9f52 Mon Sep 17 00:00:00 2001
From: yab94 <ybellu@hotmail.fr>
Date: Thu, 10 Dec 2020 16:16:55 +0100
Subject: [PATCH] adds the postgres nulls support

---
 packages/crud-request/src/types/request-query.types.ts | 1 +
 packages/crud-typeorm/src/typeorm-crud.service.ts      | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/crud-request/src/types/request-query.types.ts b/packages/crud-request/src/types/request-query.types.ts
index 138e2523..8d3a3fae 100644
--- a/packages/crud-request/src/types/request-query.types.ts
+++ b/packages/crud-request/src/types/request-query.types.ts
@@ -18,6 +18,7 @@ export type QueryJoinArr = [string, QueryFields?];
 export type QuerySort = {
   field: string;
   order: QuerySortOperator;
+  nulls?: string;
 };
 
 export type QuerySortArr = [string, QuerySortOperator];
diff --git a/packages/crud-typeorm/src/typeorm-crud.service.ts b/packages/crud-typeorm/src/typeorm-crud.service.ts
index 6bdbe6cd..9c1fb5c2 100644
--- a/packages/crud-typeorm/src/typeorm-crud.service.ts
+++ b/packages/crud-typeorm/src/typeorm-crud.service.ts
@@ -867,8 +867,11 @@ export class TypeOrmCrudService<T> extends CrudService<T> {
 
     for (let i = 0; i < sort.length; i++) {
       const field = this.getFieldWithAlias(sort[i].field, true);
-      const checkedFiled = this.checkSqlInjection(field);
-      params[checkedFiled] = sort[i].order;
+      const checkedField = this.checkSqlInjection(field);
+      params[checkedField] = sort[i].order;
+      if(this.dbName === 'postgres' && sort[i].nulls) {
+          params[checkedField] += " " + sort[i].nulls;
+      }
     }
 
     return params;