How can transforming fields to string be accomplished within the 'this' context of Angular 12 Storybook?

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To transform fields to a string within the 'this' context of Angular 12 Storybook, you can use the JavaScript toString() method. You can access the field within the component using the 'this' keyword and then call the toString() method on it.

For example, if you have a field named 'price', you can transform it to a string in the following way:

<span>{{ this.price.toString() }}</span>

Alternatively, if you want to transform multiple fields to strings, you can create a method within the component that maps over the fields and returns them as strings. For example:

@Component({
  selector: 'app-example',
  template: `
    <div *ngFor="let item of items">
      <span>{{ itemToString(item) }}</span>
    </div>
  `
})
export class ExampleComponent {

  items: { name: string, price: number }[] = [
    { name: 'Apple', price: 0.99 },
    { name: 'Banana', price: 0.59 },
    { name: 'Pear', price: 0.79 },
  ];

  itemToString(item: { name: string, price: number }) {
    return item.name + ' - $' + item.price.toString();
  }

}

In this example, the method 'itemToString' takes an item object as an argument and returns its name and price as a string. Within the template, we use the *ngFor directive to loop over the 'items' array and bind each item to the 'item' variable. We then call the 'itemToString' method on each item to display its string representation.