Add Class Validator

package.json

@@ -24,6 +24,8 @@
     "@nestjs/core": "^10.0.0",
     "@nestjs/platform-express": "^10.0.0",
     "@nestjs/typeorm": "^10.0.2",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.14.1",
     "pg": "^8.12.0",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.8.1",

src/random-quote/quote.entity.ts

@@ -1,14 +1,17 @@
 import { Entity, Column, PrimaryGeneratedColumn } from 'typeorm';
+import { IsNotEmpty } from 'class-validator';
 
 @Entity()
 export class Quote {
   @PrimaryGeneratedColumn()
   id: number;
 
   @Column()
+  @IsNotEmpty()
   content: string;
 
   @Column()
+  @IsNotEmpty()
   author: string;
 
   @Column({ nullable: true })

src/random-quote/random-quote.controller.ts

@@ -6,10 +6,12 @@ import { Quote } from './quote.entity';
 export class RandomQuoteController {
 
     constructor(private readonly randomQuoteService: RandomQuoteService) {}
-
     @Post()
-    create(@Body() quote: Partial<Quote>): Promise<Quote> {
-        return this.randomQuoteService.create(quote);
+    async create(@Body() quote: Partial<Quote>): Promise<Quote> {
+      if (!quote.content || !quote.author) {
+        throw new Error('Content and author are required.');
+      }
+      return this.randomQuoteService.create(quote);
     }
 
     @Get()