[![npm](https://img.shields.io/npm/v/@ngneat/overview?style=flat-square)](https://www.npmjs.com/package/@ngneat/overview) [![MIT](https://img.shields.io/packagist/l/doctrine/orm.svg?style=flat-square)](https://github.com/ngneat/overview/blob/main/LICENSE) [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/) [![PRs](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](https://github.com/ngneat/overview/pulls) [![styled with prettier](https://img.shields.io/badge/styled_with-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier) [![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-) [![ngneat](https://img.shields.io/badge/@-ngneat-383636?style=flat-square&labelColor=8f68d4)](https://github.com/ngneat/) [![spectator](https://img.shields.io/badge/tested%20with-spectator-2196F3.svg?style=flat-square)](https://github.com/ngneat/spectator) > 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}
💻 🤔

_{Dharmen Shah}
🖋 📖

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

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