From b3aed8c6e7e2f5bf1e42817ae9c1f279bf1efdbf Mon Sep 17 00:00:00 2001
From: lukasss88 <lukaszszymanski88.99@gmail.com>
Date: Tue, 21 Oct 2025 16:44:07 +0200
Subject: [PATCH 1/2] feat: solution for content projection

---
 .../city-card/city-card.component.ts          | 50 +++++++++++--
 .../student-card/student-card.component.ts    | 36 ++++++++--
 .../teacher-card/teacher-card.component.ts    | 42 +++++++++--
 .../src/app/data-access/city.store.ts         |  2 +-
 .../1-projection/src/app/data-access/store.ts |  9 +++
 .../src/app/ui/card/card.component.ts         | 70 +++++++------------
 .../app/ui/list-item/list-item.component.ts   | 16 ++---
 7 files changed, 151 insertions(+), 74 deletions(-)
 create mode 100644 apps/angular/1-projection/src/app/data-access/store.ts

diff --git a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
index 8895c8c84..8c0c90031 100644
--- a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
@@ -1,9 +1,51 @@
-import { ChangeDetectionStrategy, Component } from '@angular/core';
+import { NgOptimizedImage } from '@angular/common';
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { CityStore } from '../../data-access/city.store';
+import {
+  FakeHttpService,
+  randomCity,
+} from '../../data-access/fake-http.service';
+import { CardType } from '../../model/card.model';
+import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-city-card',
-  template: 'TODO City',
-  imports: [],
+  template: `
+    <app-card
+      [list]="cities()"
+      [itemTemplate]="itemTemplate"
+      (onAddNewItem)="addNewCity()">
+      <img ngSrc="assets/img/city.png" width="200" height="200" />
+    </app-card>
+
+    <ng-template #itemTemplate let-item>
+      <app-list-item
+        [name]="item.name"
+        [id]="item.id"
+        [type]="cardType"
+        (onDeleteItem)="deleteCity($event)"></app-list-item>
+    </ng-template>
+  `,
+  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class CityCardComponent {}
+export class CityCardComponent {
+  private http = inject(FakeHttpService);
+  private store = inject(CityStore);
+
+  cities = this.store.cities;
+  cardType = CardType.CITY;
+
+  ngOnInit(): void {
+    this.http.fetchCities$.subscribe((c) => this.store.addAll(c));
+  }
+
+  addNewCity() {
+    this.store.addOne(randomCity());
+  }
+
+  deleteCity(id: number) {
+    this.store.deleteOne(id);
+  }
+}
diff --git a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
index bdfa4abd4..c72dbe903 100644
--- a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
@@ -1,31 +1,49 @@
+import { NgOptimizedImage } from '@angular/common';
 import {
   ChangeDetectionStrategy,
   Component,
   inject,
   OnInit,
 } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import {
+  FakeHttpService,
+  randStudent,
+} from '../../data-access/fake-http.service';
+import { Store } from '../../data-access/store';
 import { StudentStore } from '../../data-access/student.store';
 import { CardType } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-student-card',
   template: `
     <app-card
       [list]="students()"
-      [type]="cardType"
-      customClass="bg-light-green" />
+      class="bg-light-green"
+      [itemTemplate]="itemTemplate"
+      (onAddNewItem)="addNewItem()">
+      <img ngSrc="assets/img/student.webp" width="200" height="200" />
+    </app-card>
+
+    <ng-template #itemTemplate let-item>
+      <app-list-item
+        [name]="item.firstName"
+        [id]="item.id"
+        [type]="cardType"
+        (onDeleteItem)="deleteStudent($event)"></app-list-item>
+    </ng-template>
   `,
   styles: [
     `
-      ::ng-deep .bg-light-green {
+      .bg-light-green {
         background-color: rgba(0, 250, 0, 0.1);
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
+  providers: [{ provide: Store, useExisting: StudentStore }],
 })
 export class StudentCardComponent implements OnInit {
   private http = inject(FakeHttpService);
@@ -37,4 +55,12 @@ export class StudentCardComponent implements OnInit {
   ngOnInit(): void {
     this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
   }
+
+  addNewItem() {
+    this.store.addOne(randStudent());
+  }
+
+  deleteStudent(id: number) {
+    this.store.deleteOne(id);
+  }
 }
diff --git a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
index adf0ad3c1..ed2c23478 100644
--- a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
@@ -1,25 +1,47 @@
-import { Component, inject, OnInit } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import { NgOptimizedImage } from '@angular/common';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  inject,
+  OnInit,
+} from '@angular/core';
+import {
+  FakeHttpService,
+  randTeacher,
+} from '../../data-access/fake-http.service';
 import { TeacherStore } from '../../data-access/teacher.store';
 import { CardType } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-teacher-card',
   template: `
     <app-card
       [list]="teachers()"
-      [type]="cardType"
-      customClass="bg-light-red"></app-card>
+      [itemTemplate]="itemTemplate"
+      class="bg-light-red"
+      (onAddNewItem)="addNewTeacher()">
+      <img priority ngSrc="assets/img/teacher.png" width="200" height="200" />
+    </app-card>
+
+    <ng-template #itemTemplate let-item>
+      <app-list-item
+        [name]="item.firstName"
+        [id]="item.id"
+        [type]="cardType"
+        (onDeleteItem)="deleteTeacher($event)"></app-list-item>
+    </ng-template>
   `,
   styles: [
     `
-      ::ng-deep .bg-light-red {
+      .bg-light-red {
         background-color: rgba(250, 0, 0, 0.1);
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
+  changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class TeacherCardComponent implements OnInit {
   private http = inject(FakeHttpService);
@@ -31,4 +53,12 @@ export class TeacherCardComponent implements OnInit {
   ngOnInit(): void {
     this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
   }
+
+  addNewTeacher() {
+    this.store.addOne(randTeacher());
+  }
+
+  deleteTeacher(id: number) {
+    this.store.deleteOne(id);
+  }
 }
diff --git a/apps/angular/1-projection/src/app/data-access/city.store.ts b/apps/angular/1-projection/src/app/data-access/city.store.ts
index a8b523569..9fbcb346b 100644
--- a/apps/angular/1-projection/src/app/data-access/city.store.ts
+++ b/apps/angular/1-projection/src/app/data-access/city.store.ts
@@ -5,7 +5,7 @@ import { City } from '../model/city.model';
   providedIn: 'root',
 })
 export class CityStore {
-  private cities = signal<City[]>([]);
+  public cities = signal<City[]>([]);
 
   addAll(cities: City[]) {
     this.cities.set(cities);
diff --git a/apps/angular/1-projection/src/app/data-access/store.ts b/apps/angular/1-projection/src/app/data-access/store.ts
new file mode 100644
index 000000000..f6be7b3fe
--- /dev/null
+++ b/apps/angular/1-projection/src/app/data-access/store.ts
@@ -0,0 +1,9 @@
+import { signal } from '@angular/core';
+
+export abstract class Store<T> {
+  protected readonly items = signal<T[]>([]);
+
+  abstract addAll(items: T[]): void;
+  abstract addOne(item: T): void;
+  abstract deleteOne(id: number): void;
+}
diff --git a/apps/angular/1-projection/src/app/ui/card/card.component.ts b/apps/angular/1-projection/src/app/ui/card/card.component.ts
index 1a6c3648c..b7bc062b1 100644
--- a/apps/angular/1-projection/src/app/ui/card/card.component.ts
+++ b/apps/angular/1-projection/src/app/ui/card/card.component.ts
@@ -1,58 +1,36 @@
-import { NgOptimizedImage } from '@angular/common';
-import { Component, inject, input } from '@angular/core';
-import { randStudent, randTeacher } from '../../data-access/fake-http.service';
-import { StudentStore } from '../../data-access/student.store';
-import { TeacherStore } from '../../data-access/teacher.store';
-import { CardType } from '../../model/card.model';
-import { ListItemComponent } from '../list-item/list-item.component';
+import { NgTemplateOutlet } from '@angular/common';
+import { Component, input, output, TemplateRef } from '@angular/core';
 
 @Component({
   selector: 'app-card',
   template: `
-    <div
-      class="flex w-fit flex-col gap-3 rounded-md border-2 border-black p-4"
-      [class]="customClass()">
-      @if (type() === CardType.TEACHER) {
-        <img ngSrc="assets/img/teacher.png" width="200" height="200" />
-      }
-      @if (type() === CardType.STUDENT) {
-        <img ngSrc="assets/img/student.webp" width="200" height="200" />
-      }
+    <ng-content select="img"></ng-content>
 
-      <section>
-        @for (item of list(); track item) {
-          <app-list-item
-            [name]="item.firstName"
-            [id]="item.id"
-            [type]="type()"></app-list-item>
-        }
-      </section>
+    <section>
+      @for (item of list(); track item) {
+        <ng-container
+          [ngTemplateOutlet]="itemTemplate()"
+          [ngTemplateOutletContext]="{ $implicit: item }"></ng-container>
+      }
+    </section>
 
-      <button
-        class="rounded-sm border border-blue-500 bg-blue-300 p-2"
-        (click)="addNewItem()">
-        Add
-      </button>
-    </div>
+    <button
+      class="rounded-sm border border-blue-500 bg-blue-300 p-2"
+      (click)="addNewItem()">
+      Add
+    </button>
   `,
-  imports: [ListItemComponent, NgOptimizedImage],
+  host: {
+    class: 'border-2 border-black rounded-md p-4 w-fit flex flex-col gap-3',
+  },
+  imports: [NgTemplateOutlet],
 })
-export class CardComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
-
-  readonly list = input<any[] | null>(null);
-  readonly type = input.required<CardType>();
-  readonly customClass = input('');
-
-  CardType = CardType;
+export class CardComponent<T> {
+  readonly list = input<T[] | null>(null);
+  readonly itemTemplate = input<TemplateRef<any> | null>(null);
+  onAddNewItem = output();
 
   addNewItem() {
-    const type = this.type();
-    if (type === CardType.TEACHER) {
-      this.teacherStore.addOne(randTeacher());
-    } else if (type === CardType.STUDENT) {
-      this.studentStore.addOne(randStudent());
-    }
+    this.onAddNewItem.emit();
   }
 }
diff --git a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
index 5d504f372..42a156374 100644
--- a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
+++ b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
@@ -1,11 +1,9 @@
 import {
   ChangeDetectionStrategy,
   Component,
-  inject,
   input,
+  output,
 } from '@angular/core';
-import { StudentStore } from '../../data-access/student.store';
-import { TeacherStore } from '../../data-access/teacher.store';
 import { CardType } from '../../model/card.model';
 
 @Component({
@@ -21,19 +19,13 @@ import { CardType } from '../../model/card.model';
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class ListItemComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
-
   readonly id = input.required<number>();
   readonly name = input.required<string>();
   readonly type = input.required<CardType>();
 
+  readonly onDeleteItem = output<number>();
+
   delete(id: number) {
-    const type = this.type();
-    if (type === CardType.TEACHER) {
-      this.teacherStore.deleteOne(id);
-    } else if (type === CardType.STUDENT) {
-      this.studentStore.deleteOne(id);
-    }
+    this.onDeleteItem.emit(id);
   }
 }

From 32d1af7846911cf77983759ce59e2c9b10754827 Mon Sep 17 00:00:00 2001
From: lukasss88 <lukaszszymanski88.99@gmail.com>
Date: Sat, 25 Oct 2025 12:07:58 +0200
Subject: [PATCH 2/2] feat(card,teacher): typed template context via
 ngTemplateContextGuard; use rxResource

- add CardItemDirective<T> with ngTemplateContextGuard for type-safe `let-item`
- render projected templates via contentChild(CardItemDirective<T>) + *ngTemplateOutlet
- replace manual subscription in TeacherCard ngOnInit with rxResource
---
 .../city-card/city-card.component.ts          | 41 +++++++--------
 .../student-card/student-card.component.ts    | 50 ++++++++-----------
 .../teacher-card/teacher-card.component.ts    | 48 ++++++++----------
 .../src/app/data-access/city.store.ts         | 15 ++++--
 .../1-projection/src/app/data-access/store.ts |  9 ----
 .../src/app/data-access/student.store.ts      | 15 ++++--
 .../src/app/data-access/teacher.store.ts      | 15 ++++--
 .../ui/card/card-item-context.directive.ts    | 23 +++++++++
 .../src/app/ui/card/card.component.ts         | 11 ++--
 .../app/ui/list-item/list-item.component.ts   |  8 +--
 10 files changed, 128 insertions(+), 107 deletions(-)
 delete mode 100644 apps/angular/1-projection/src/app/data-access/store.ts
 create mode 100644 apps/angular/1-projection/src/app/ui/card/card-item-context.directive.ts

diff --git a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
index 8c0c90031..fb0380d65 100644
--- a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
@@ -1,46 +1,43 @@
 import { NgOptimizedImage } from '@angular/common';
 import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
 import { CityStore } from '../../data-access/city.store';
-import {
-  FakeHttpService,
-  randomCity,
-} from '../../data-access/fake-http.service';
+import { randomCity } from '../../data-access/fake-http.service';
 import { CardType } from '../../model/card.model';
+import { City } from '../../model/city.model';
+import { CardItemDirective } from '../../ui/card/card-item-context.directive';
 import { CardComponent } from '../../ui/card/card.component';
 import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-city-card',
   template: `
-    <app-card
-      [list]="cities()"
-      [itemTemplate]="itemTemplate"
-      (onAddNewItem)="addNewCity()">
+    <app-card [list]="cities.value()" (onAddNewItem)="addNewCity()">
       <img ngSrc="assets/img/city.png" width="200" height="200" />
-    </app-card>
 
-    <ng-template #itemTemplate let-item>
-      <app-list-item
-        [name]="item.name"
-        [id]="item.id"
-        [type]="cardType"
-        (onDeleteItem)="deleteCity($event)"></app-list-item>
-    </ng-template>
+      <ng-template [appCardItem]="_cityType" #itemTemplate let-item>
+        <app-list-item
+          [name]="item.name"
+          [id]="item.id"
+          [type]="cardType"
+          (onDeleteItem)="deleteCity(item.id)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
-  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
+  imports: [
+    CardComponent,
+    NgOptimizedImage,
+    ListItemComponent,
+    CardItemDirective,
+  ],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class CityCardComponent {
-  private http = inject(FakeHttpService);
   private store = inject(CityStore);
+  readonly _cityType!: City;
 
   cities = this.store.cities;
   cardType = CardType.CITY;
 
-  ngOnInit(): void {
-    this.http.fetchCities$.subscribe((c) => this.store.addAll(c));
-  }
-
   addNewCity() {
     this.store.addOne(randomCity());
   }
diff --git a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
index c72dbe903..09bd6592f 100644
--- a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
@@ -1,17 +1,10 @@
 import { NgOptimizedImage } from '@angular/common';
-import {
-  ChangeDetectionStrategy,
-  Component,
-  inject,
-  OnInit,
-} from '@angular/core';
-import {
-  FakeHttpService,
-  randStudent,
-} from '../../data-access/fake-http.service';
-import { Store } from '../../data-access/store';
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { randStudent } from '../../data-access/fake-http.service';
 import { StudentStore } from '../../data-access/student.store';
 import { CardType } from '../../model/card.model';
+import { Student } from '../../model/student.model';
+import { CardItemDirective } from '../../ui/card/card-item-context.directive';
 import { CardComponent } from '../../ui/card/card.component';
 import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
@@ -19,20 +12,19 @@ import { ListItemComponent } from '../../ui/list-item/list-item.component';
   selector: 'app-student-card',
   template: `
     <app-card
-      [list]="students()"
+      [list]="students.value()"
       class="bg-light-green"
-      [itemTemplate]="itemTemplate"
       (onAddNewItem)="addNewItem()">
       <img ngSrc="assets/img/student.webp" width="200" height="200" />
-    </app-card>
 
-    <ng-template #itemTemplate let-item>
-      <app-list-item
-        [name]="item.firstName"
-        [id]="item.id"
-        [type]="cardType"
-        (onDeleteItem)="deleteStudent($event)"></app-list-item>
-    </ng-template>
+      <ng-template [appCardItem]="_studentType" #itemTemplate let-item>
+        <app-list-item
+          [name]="item.firstName"
+          [id]="item.id"
+          [type]="cardType"
+          (onDeleteItem)="deleteStudent(item.id)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
   styles: [
     `
@@ -41,21 +33,21 @@ import { ListItemComponent } from '../../ui/list-item/list-item.component';
       }
     `,
   ],
-  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
+  imports: [
+    CardComponent,
+    NgOptimizedImage,
+    ListItemComponent,
+    CardItemDirective,
+  ],
   changeDetection: ChangeDetectionStrategy.OnPush,
-  providers: [{ provide: Store, useExisting: StudentStore }],
 })
-export class StudentCardComponent implements OnInit {
-  private http = inject(FakeHttpService);
+export class StudentCardComponent {
   private store = inject(StudentStore);
+  readonly _studentType!: Student;
 
   students = this.store.students;
   cardType = CardType.STUDENT;
 
-  ngOnInit(): void {
-    this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
-  }
-
   addNewItem() {
     this.store.addOne(randStudent());
   }
diff --git a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
index ed2c23478..e47544399 100644
--- a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
@@ -1,16 +1,10 @@
 import { NgOptimizedImage } from '@angular/common';
-import {
-  ChangeDetectionStrategy,
-  Component,
-  inject,
-  OnInit,
-} from '@angular/core';
-import {
-  FakeHttpService,
-  randTeacher,
-} from '../../data-access/fake-http.service';
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { randTeacher } from '../../data-access/fake-http.service';
 import { TeacherStore } from '../../data-access/teacher.store';
 import { CardType } from '../../model/card.model';
+import { Teacher } from '../../model/teacher.model';
+import { CardItemDirective } from '../../ui/card/card-item-context.directive';
 import { CardComponent } from '../../ui/card/card.component';
 import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
@@ -18,20 +12,19 @@ import { ListItemComponent } from '../../ui/list-item/list-item.component';
   selector: 'app-teacher-card',
   template: `
     <app-card
-      [list]="teachers()"
-      [itemTemplate]="itemTemplate"
+      [list]="teachers.value()"
       class="bg-light-red"
       (onAddNewItem)="addNewTeacher()">
       <img priority ngSrc="assets/img/teacher.png" width="200" height="200" />
-    </app-card>
 
-    <ng-template #itemTemplate let-item>
-      <app-list-item
-        [name]="item.firstName"
-        [id]="item.id"
-        [type]="cardType"
-        (onDeleteItem)="deleteTeacher($event)"></app-list-item>
-    </ng-template>
+      <ng-template [appCardItem]="_teacherType" #itemTemplate let-item>
+        <app-list-item
+          [name]="item.firstName"
+          [id]="item.id"
+          [type]="cardType"
+          (onDeleteItem)="deleteTeacher(item.id)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
   styles: [
     `
@@ -40,20 +33,21 @@ import { ListItemComponent } from '../../ui/list-item/list-item.component';
       }
     `,
   ],
-  imports: [CardComponent, NgOptimizedImage, ListItemComponent],
+  imports: [
+    CardComponent,
+    NgOptimizedImage,
+    ListItemComponent,
+    CardItemDirective,
+  ],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class TeacherCardComponent implements OnInit {
-  private http = inject(FakeHttpService);
+export class TeacherCardComponent {
   private store = inject(TeacherStore);
+  readonly _teacherType!: Teacher;
 
   teachers = this.store.teachers;
   cardType = CardType.TEACHER;
 
-  ngOnInit(): void {
-    this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
-  }
-
   addNewTeacher() {
     this.store.addOne(randTeacher());
   }
diff --git a/apps/angular/1-projection/src/app/data-access/city.store.ts b/apps/angular/1-projection/src/app/data-access/city.store.ts
index 9fbcb346b..88acf2341 100644
--- a/apps/angular/1-projection/src/app/data-access/city.store.ts
+++ b/apps/angular/1-projection/src/app/data-access/city.store.ts
@@ -1,21 +1,28 @@
-import { Injectable, signal } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
+import { rxResource } from '@angular/core/rxjs-interop';
 import { City } from '../model/city.model';
+import { FakeHttpService } from './fake-http.service';
 
 @Injectable({
   providedIn: 'root',
 })
 export class CityStore {
-  public cities = signal<City[]>([]);
+  http = inject(FakeHttpService);
+
+  cities = rxResource({
+    stream: () => this.http.fetchCities$,
+    defaultValue: [],
+  });
 
   addAll(cities: City[]) {
     this.cities.set(cities);
   }
 
   addOne(city: City) {
-    this.cities.set([...this.cities(), city]);
+    this.cities.set([...this.cities.value(), city]);
   }
 
   deleteOne(id: number) {
-    this.cities.set(this.cities().filter((s) => s.id !== id));
+    this.cities.set(this.cities.value().filter((s) => s.id !== id));
   }
 }
diff --git a/apps/angular/1-projection/src/app/data-access/store.ts b/apps/angular/1-projection/src/app/data-access/store.ts
deleted file mode 100644
index f6be7b3fe..000000000
--- a/apps/angular/1-projection/src/app/data-access/store.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { signal } from '@angular/core';
-
-export abstract class Store<T> {
-  protected readonly items = signal<T[]>([]);
-
-  abstract addAll(items: T[]): void;
-  abstract addOne(item: T): void;
-  abstract deleteOne(id: number): void;
-}
diff --git a/apps/angular/1-projection/src/app/data-access/student.store.ts b/apps/angular/1-projection/src/app/data-access/student.store.ts
index 6e7f57022..257b8c9d9 100644
--- a/apps/angular/1-projection/src/app/data-access/student.store.ts
+++ b/apps/angular/1-projection/src/app/data-access/student.store.ts
@@ -1,21 +1,28 @@
-import { Injectable, signal } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
+import { rxResource } from '@angular/core/rxjs-interop';
 import { Student } from '../model/student.model';
+import { FakeHttpService } from './fake-http.service';
 
 @Injectable({
   providedIn: 'root',
 })
 export class StudentStore {
-  public students = signal<Student[]>([]);
+  http = inject(FakeHttpService);
+
+  students = rxResource({
+    stream: () => this.http.fetchStudents$,
+    defaultValue: [],
+  });
 
   addAll(students: Student[]) {
     this.students.set(students);
   }
 
   addOne(student: Student) {
-    this.students.set([...this.students(), student]);
+    this.students.set([...this.students.value(), student]);
   }
 
   deleteOne(id: number) {
-    this.students.set(this.students().filter((s) => s.id !== id));
+    this.students.set(this.students.value().filter((s) => s.id !== id));
   }
 }
diff --git a/apps/angular/1-projection/src/app/data-access/teacher.store.ts b/apps/angular/1-projection/src/app/data-access/teacher.store.ts
index 5f6dae989..3dddaebad 100644
--- a/apps/angular/1-projection/src/app/data-access/teacher.store.ts
+++ b/apps/angular/1-projection/src/app/data-access/teacher.store.ts
@@ -1,21 +1,28 @@
-import { Injectable, signal } from '@angular/core';
+import { inject, Injectable } from '@angular/core';
+import { rxResource } from '@angular/core/rxjs-interop';
 import { Teacher } from '../model/teacher.model';
+import { FakeHttpService } from './fake-http.service';
 
 @Injectable({
   providedIn: 'root',
 })
 export class TeacherStore {
-  public teachers = signal<Teacher[]>([]);
+  http = inject(FakeHttpService);
+
+  teachers = rxResource({
+    stream: () => this.http.fetchTeachers$,
+    defaultValue: [],
+  });
 
   addAll(teachers: Teacher[]) {
     this.teachers.set(teachers);
   }
 
   addOne(teacher: Teacher) {
-    this.teachers.set([...this.teachers(), teacher]);
+    this.teachers.set([...this.teachers.value(), teacher]);
   }
 
   deleteOne(id: number) {
-    this.teachers.set(this.teachers().filter((t) => t.id !== id));
+    this.teachers.set(this.teachers.value().filter((t) => t.id !== id));
   }
 }
diff --git a/apps/angular/1-projection/src/app/ui/card/card-item-context.directive.ts b/apps/angular/1-projection/src/app/ui/card/card-item-context.directive.ts
new file mode 100644
index 000000000..bbc9c8f53
--- /dev/null
+++ b/apps/angular/1-projection/src/app/ui/card/card-item-context.directive.ts
@@ -0,0 +1,23 @@
+import { Directive, inject, input, TemplateRef } from '@angular/core';
+
+export interface CardItemContext<T> {
+  $implicit: T;
+}
+
+@Directive({
+  selector: 'ng-template[appCardItem]',
+  exportAs: 'appCardItem',
+  standalone: true,
+})
+export class CardItemDirective<T> {
+  readonly appCardItem = input<T>();
+
+  tpl = inject(TemplateRef<CardItemContext<T>>);
+
+  static ngTemplateContextGuard<T>(
+    _dir: CardItemDirective<T>,
+    _ctx: unknown,
+  ): _ctx is CardItemContext<T> {
+    return true;
+  }
+}
diff --git a/apps/angular/1-projection/src/app/ui/card/card.component.ts b/apps/angular/1-projection/src/app/ui/card/card.component.ts
index b7bc062b1..6b0d66c22 100644
--- a/apps/angular/1-projection/src/app/ui/card/card.component.ts
+++ b/apps/angular/1-projection/src/app/ui/card/card.component.ts
@@ -1,5 +1,6 @@
 import { NgTemplateOutlet } from '@angular/common';
-import { Component, input, output, TemplateRef } from '@angular/core';
+import { Component, contentChild, input, output } from '@angular/core';
+import { CardItemDirective } from './card-item-context.directive';
 
 @Component({
   selector: 'app-card',
@@ -9,8 +10,10 @@ import { Component, input, output, TemplateRef } from '@angular/core';
     <section>
       @for (item of list(); track item) {
         <ng-container
-          [ngTemplateOutlet]="itemTemplate()"
-          [ngTemplateOutletContext]="{ $implicit: item }"></ng-container>
+          *ngTemplateOutlet="
+            itemTemplate().tpl;
+            context: { $implicit: item }
+          "></ng-container>
       }
     </section>
 
@@ -27,7 +30,7 @@ import { Component, input, output, TemplateRef } from '@angular/core';
 })
 export class CardComponent<T> {
   readonly list = input<T[] | null>(null);
-  readonly itemTemplate = input<TemplateRef<any> | null>(null);
+  readonly itemTemplate = contentChild.required(CardItemDirective<T>);
   onAddNewItem = output();
 
   addNewItem() {
diff --git a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
index 42a156374..743e62e95 100644
--- a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
+++ b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
@@ -11,7 +11,7 @@ import { CardType } from '../../model/card.model';
   template: `
     <div class="border-grey-300 flex justify-between border px-2 py-1">
       {{ name() }}
-      <button (click)="delete(id())">
+      <button (click)="delete()">
         <img class="h-5" src="assets/svg/trash.svg" />
       </button>
     </div>
@@ -23,9 +23,9 @@ export class ListItemComponent {
   readonly name = input.required<string>();
   readonly type = input.required<CardType>();
 
-  readonly onDeleteItem = output<number>();
+  readonly onDeleteItem = output<void>();
 
-  delete(id: number) {
-    this.onDeleteItem.emit(id);
+  delete() {
+    this.onDeleteItem.emit();
   }
 }