Added edit_timestamp col to post

backend/libs/database/post.entity.ts

@@ -22,6 +22,9 @@ export class Post {
     @Column({ type: 'timestamptz' })
     public timestamp!: Date;
 
+    @Column({ type: 'timestamptz', nullable: true })
+    public edit_timestamp?: Date;
+
     @Column({ nullable: false })
     public from_user_id!: string;
 

backend/src/modules/post/post.service.ts

@@ -41,7 +41,7 @@ export class PostService {
             }
             if (post.text !== data.text) {
                 post.text = data.text;
-                post.timestamp = new Date();
+                post.edit_timestamp = new Date();
                 await this.postRepository.save(post);
             }
             return post;