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https://github.com/ngneat/overview

πŸ€– A collection of tools to make your Angular views more modular, scalable, and maintainable
https://github.com/ngneat/overview

angular dynamic teleport views

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πŸ€– A collection of tools to make your Angular views more modular, scalable, and maintainable

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README

        




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> Overview - The Template for Success in Template Management

## Compatibility with Angular Versions



@ngneat/overview
Angular





6.x


>= 17




5.x


>= 16




4.x


>= 14 < 16




3.x


>= 13 < 14




2.x


>= 11 < 13


## Installation

```bash
npm i @ngneat/overview
yarn add @ngneat/overview
```

## Table of Contents

- [DynamicView](#DynamicContent)
- [Teleporting](#Teleporting)
- [ViewService](#ViewService)
- [createView](#createView)
- [createComponent](#createComponent)
- [createTemplate](#createTemplate)

## `DynamicView`

Use the `dynamicView` structural directive to render a component, a template, HTML, or default template dynamically.

Let’s say we build a generic error component. What we want is to give our consumers the flexibly to create it by using one of three options:

- They can choose to use the default template
- They can choose to use their own text which can be static or dynamic
- They can choose to pass their own template or component

```ts
import { DynamicViewDirective, Content } from '@ngneat/overview';

@Component({
template: `

Default view
`,
standalone: true,
imports: [DynamicViewDirective],
})
export class ErrorComponent {
@Input() view: Content | undefined;
}
```

You can also pass a `context` or an [`injector`](https://angular.io/api/core/Injector) as `inputs` to the directive:

```html

Component

Template

{{ title }}

```

If you pass `context` to a component and the value can be accessed via the `injectViewContext` function:

```ts
import { injectViewContext } from '@ngneat/overview';

interface Context {
title: string;
}

@Component({
template: `

{{ context().title }}
`,
standalone: true,
})
export class MyDynamicComponent {
context: Signal = injectViewContext();
}
```

`injectViewContext` returns a readonly signal with the view's context object.

## `Teleporting`

Teleporting means rendering a view at a different location from its declaration. There are two cases it might be helpful:

- Avoid prop drilling to a nested component.
- Rendering a view at another place in the DOM while keeping its context where it’s defined.

You can read more about this approach in this [article](https://netbasal.com/beam-me-up-scotty-on-teleporting-templates-in-angular-a924f1a7798).

Use the `teleportOutlet` directive to define a new `outlet`. An `outlet` is an anchor where the view will be projected as a sibling.

```typescript
import { TeleportOutletDirective } from '@ngneat/overview';

@Component({
template: `




`,
standalone: true,
imports: [TeleportOutletDirective],
})
export class FooComponent {}
```

Use the `teleportTo` directive to `teleport` the view to a specific `outlet`:

```typescript
import { TeleportDirective } from '@ngneat/overview';

@Component({
template: `

{{ value }}

`,
standalone: true,
imports: [TeleportDirective],
})
export class BarComponent {
value = '...';
}
```

## ViewService

The `ViewService` provides `facade` methods to create modular views in Angular. It's been used in various projects like [hot-toast](https://github.com/ngneat/hot-toast), and [helipopper](https://github.com/ngneat/helipopper).

### `createComponent`

The `createComponent` method takes a `Component`, and returns an instance of `CompRef`:

```ts
import { ViewService, CompRef } from '@ngneat/overview';

@Injectable()
class ToastService {
private viewService = inject(ViewService);
componentRef: CompRef;

init() {
this.componentRef = this.viewService
.createComponent(HotToastContainerComponent)
.setInput('defaultConfig', defaultConfig)
.appendTo(document.body);
}
}
```

There are cases where we want to use an Angular [component](https://netbasal.com/using-angular-components-with-third-party-libraries-522a1f33003) template in a third-party library that takes a native DOM element or a string. In this case, we can use the `getRawContent` or the `getElement` method, respectively.

```ts
import { ViewService } from '@ngneat/overview';

@Directive()
class ChartDirective {
private viewService = inject(ViewService);

createChart(color: string) {
const ref = this.viewService.createComponent(FooTooltip).setInput('color', color).detectChanges(document.body);

const content = ref.getRawContent();

ref.destroy();

Highcharts.chart('container', {
tooltip: {
formatter: function () {
return content;
},
useHTML: true,
},
});
}
}
```

#### `createComponent` Options

```ts
createComponent(component: Type, {
injector?: Injector,
environmentInjector?: EnvironmentInjector,
context?: Context,
vcr?: ViewContainerRef,
})
```

### `createTemplate`

The `createTemplate` method takes a `TemplateRef`, and returns an instance of `ViewRef`.

```ts
createTemplate(tpl: TemplateRef, {
context?: Context,
vcr?: ViewContainerRef,
injector?: Injector,
})
```

### `createView`

The `createView` method takes a `Component`, a `TemplateRef` or a `string`, and creates a `View`:

```ts
import { ViewService, Content } from '@ngneat/overview';

@Injectable()
class ToastService {
private viewService = inject(ViewService);

createToast(content: Content) {
const ref = this.viewService.createView(content);
document.body.appendChild(ref.getElement());
}
}
```

## Contributors ✨

Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):



Netanel Basal

πŸ’» πŸ€”

Dharmen Shah

πŸ–‹ πŸ“–

This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!

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