add content

src/modules/content/dtos/create-post.dto.ts

@@ -0,0 +1,18 @@
+import { Injectable } from '@nestjs/common';
+import { IsNotEmpty, IsOptional, MaxLength } from 'class-validator';
+
+@Injectable()
+export class CreatePostDto {
+    @MaxLength(255, { always: true, message: 'the max length of content title is $constraint1' })
+    @IsNotEmpty({ groups: ['create'], message: 'the title of content should not be empty' })
+    @IsOptional({ groups: ['update'] })
+    title: string;
+
+    @IsNotEmpty({ groups: ['create'], message: 'the body of content should not be empty' })
+    @IsOptional({ groups: ['update'] })
+    body: string;
+
+    @MaxLength(500, { always: true, message: 'the max length of content summary is $constraint1' })
+    @IsOptional({ always: true })
+    summary?: string;
+}

src/modules/content/dtos/update-post.dto.ts

@@ -0,0 +1,13 @@
+import { Injectable } from '@nestjs/common';
+import { PartialType } from '@nestjs/swagger';
+
+import { IsDefined, IsNumber } from 'class-validator';
+
+import { CreatePostDto } from './create-post.dto';
+
+@Injectable()
+export class UpdatePostDto extends PartialType(CreatePostDto) {
+    @IsNumber(undefined, { groups: ['update'], message: 'The format of the post ID is incorrect.' })
+    @IsDefined({ groups: ['update'], message: 'The post ID must be specified' })
+    id: number;
+}