MDT5_Angular/src/app/app.component.html

<h1>Einkaufszettel</h1>
<app-blog-entry *ngFor="let entry of entries" [entry]="entry"></app-blog-entry>
<h2>Neuen Einkaufszettel Eintrag anlegen:</h2>

<div class="form">
<form novalidate (ngSubmit)="saveTask(form.value)" #form="ngForm">
  <div class="form-group">
    <label for="title">Titel*</label>
    <input type="text" class="form-control" name="title" id="title" #title ngModel required/>

    <label for="image">Bild-URL*</label>
    <input type="text" class="form-control" name="title" id="image" #image ngModel required/>

    <label>Kategorie*</label>
    <input type="text" class="form-control"  id="kategorie" #kategorie ngModel required/>

    <label for="menge">Menge*</label>
    <input type="text" class="form-control" name="title" id="menge" #menge ngModel required/>

    <label for="kommentar">Kommentar: </label>
    <textarea id="kommentar" #kommentar cols="20" rows="3" #text>
    </textarea>
  </div>
  <button (click)="createBlogEntry(title.value, image.value, kategorie.value,menge.value, kommentar.value)">
    Eintrag anlegen
  </button>
  <button (click)="deleteAllEntries()">
    Alle Einträge löschen
  </button>
  <button (click)="deleteLastEntry()">
    Letzten Eintrag Löschen
  </button>

</form>
  <div class="container">
    <div class="row custom-wrapper">
      <div class="col-md-12">
        <!-- Form starts -->
        <form [formGroup]="registrationForm" (ngSubmit)="onSubmit()">
          <div class="group-gap">
            <div class="d-block my-3">
              <div class="mb-3">
                <select class="custom-select" (change)="changeKategorie($event)" formControlName="kategorieName">
                  <option value="">Wählen sie eine Kategorie</option>
                  <option *ngFor="let kategorie of Kategorien" [ngValue]="kategorie">{{kategorie}}</option>
                </select>
                <!-- error block -->
                <div class="invalid-feedback" *ngIf="isSubmitted && kategorieName.errors?.required">
                  <sup>*</sup>Bitte geben sie eine Kategorie ein!
                </div>
              </div>
            </div>
          </div>
          <!-- Submit Button -->
          <button type="submit" class="btn btn-danger btn-lg btn-block">Speichern</button>
        </form><!-- Form ends -->
      </div>
    </div>
  </div>
</div>