WIP implements projection type

Author: tacxou

service/src/_common/helpers/pick-projection.helper.ts

@@ -7,6 +7,6 @@ export function PickProjectionHelper<T, K extends keyof T>(
     [key in keyof T]?: number | 1 | 0
   },
 ): Type<Pick<T, (readonly K[])[number]>> {
-  const keys = Object.keys(projection)
+  const keys = Object.keys(projection).filter((key) => projection[key] === 1)
   return PickType(classRef, keys as K[])
 }

service/src/_common/types/partial-projection.type.ts

@@ -0,0 +1,3 @@
+export type PartialProjectionType<T> = {
+  [key in keyof T]?: number | 1 | 0
+}

service/src/core/categories/categories.controller.ts

@@ -18,15 +18,17 @@ import { ApiUpdateDecorator } from '~/_common/decorators/api-update.decorator'
 import { ApiReadResponseDecorator } from '~/_common/decorators/api-read-response.decorator'
 import { ApiDeletedResponseDecorator } from '~/_common/decorators/api-deleted-response.decorator'
 import { PickProjectionHelper } from '~/_common/helpers/pick-projection.helper'
+import { PartialProjectionType } from '~/_common/types/partial-projection.type'
 
 @Controller('categories')
 export class CategoriesController extends AbstractController {
-  protected static readonly projection = {
+
+  protected static readonly projection: PartialProjectionType<CategoriesDto> = {
     name: 1,
     parentId: 1,
     description: 1,
     color: 1,
-    icon: 1,
+    icon: 0,
   }
 
   constructor(private readonly _service: CategoriesService) {