post entity的增删改查，路由找服务，服务找库，库绑定实体并提供方法；增加dto提供提交数据字段提示

src/modules/post/post.controller.ts

@@ -1,5 +1,6 @@
-import { Controller, Post, Body } from '@nestjs/common';
+import { Controller, Post, Body, Get, Param, Put, Delete } from '@nestjs/common';
 import { PostService } from './post.service';
+import { PostDto } from './post.dto';
 
 @Controller('posts')
 export class PostController {
@@ -8,7 +9,27 @@ export class PostController {
     ) { }
 
     @Post()
-    async store(@Body() data) {
+    async store(@Body() data: PostDto) {
         return await this.postService.store(data);
     }
+
+    @Get()
+    async index() {
+        return await this.postService.index();
+    }
+
+    @Get(':id')
+    async show(@Param() id: string) {
+        return await this.postService.show(id);
+    }
+
+    @Put(':id')
+    async update(@Param() id: string, @Body() data: Partial<PostDto>) {
+        return await this.postService.update(id, data);
+    }
+
+    @Delete(':id')
+    async destroy(@Param() id: string) {
+        return await this.postService.destroy(id);
+    }
 }

src/modules/post/post.dto.ts

@@ -0,0 +1,4 @@
+export class PostDto {
+    readonly title: string;
+    readonly body: string;
+}

src/modules/post/post.entity.ts

@@ -8,7 +8,7 @@ export class Post {
     @Column()
     title: string;
 
-    @Column('longtext')
+    @Column('longtext', {nullable: true})
     body: string;
 
     @CreateDateColumn()

src/modules/post/post.service.ts

@@ -2,6 +2,7 @@ import { Injectable } from '@nestjs/common';
 import { Repository } from 'typeorm';
 import { Post } from './post.entity';
 import { InjectRepository } from '@nestjs/typeorm';
+import { PostDto } from './post.dto';
 
 @Injectable()
 export class PostService {
@@ -10,8 +11,28 @@ export class PostService {
         private readonly postRepository: Repository<Post>,
     ) { }
 
-    async store(data) {
+    async store(data: PostDto) {
         const entity = await this.postRepository.create(data);
         return await this.postRepository.save(entity);
     }
+
+    async index() {
+        const entities = await this.postRepository.find();
+        return entities;
+    }
+
+    async show(id: string) {
+        const entity = await this.postRepository.findOne(id);
+        return entity;
+    }
+
+    async update(id: string, data: Partial<PostDto>) {
+        const result = await this.postRepository.update(id, data);
+        return result;
+    }
+
+    async destroy(id: string) {
+        const result = await this.postRepository.delete(id);
+        return result;
+    }
 }