update and delete

frontend/src/app/routes/post/update-post/update-post.component.ts

@@ -0,0 +1,45 @@
+import {
+  Component,
+  effect,
+  Input,
+  OnInit,
+  signal,
+  WritableSignal,
+} from '@angular/core';
+import { PostsService } from '../../../shared/services/posts.service';
+import { inject } from '@angular/core';
+import { Post } from '../../../shared/interfaces/post';
+import { Location } from '@angular/common';
+import { PostEditorComponent } from '../../../components/post-editor/post-editor.component';
+
+@Component({
+  selector: 'app-update-post',
+  imports: [PostEditorComponent],
+  templateUrl: './update-post.component.html',
+})
+export class UpdatePostComponent implements OnInit {
+  @Input() id!: string;
+  private postsService = inject(PostsService);
+  private location = inject(Location);
+  post: WritableSignal<Post> = signal({
+    id: 0,
+    title: '',
+    tldr: '',
+    content: '',
+  });
+
+  ngOnInit(): void {
+    const p = this.postsService.getPost(parseInt(this.id))();
+    if (p == undefined) {
+      this.location.back();
+      return;
+    }
+
+    this.post.set(p);
+  }
+
+  save() {
+    this.postsService.updatePost(this.post());
+    this.location.back();
+  }
+}