80 lines
2.5 KiB
Markdown
80 lines
2.5 KiB
Markdown
# Angel3 HTML
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[](https://dart.dev/null-safety)
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[](https://gitter.im/angel_dart/discussion)
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[](https://github.com/dukefirehawk/angel/tree/master/packages/html/LICENSE)
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A plug-in that allows you to return `belatuk_html_builder` AST's from request handlers, and have them sent as HTML automatically.
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[`package:belatuk_html_builder`](https://pub.dev/packages/belatuk_html_builder) is a simple virtual DOM library with a handy Dart DSL that makes it easy to build HTML AST's:
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```dart
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import 'package:belatuk_html_builder/elements.dart';
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Node myDom = html(lang: 'en', c: [
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head(c: [
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meta(name: 'viewport', content: 'width=device-width, initial-scale=1'),
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title(c: [
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text('html_builder example page')
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]),
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]),
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body(c: [
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h1(c: [
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text('Hello world!'),
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]),
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]),
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]);
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```
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This plug-in means that you can now `return` these AST's, and Angel will automatically send them to clients. Ultimately, the implication is that you can use `belatuk_html_builder` as a substitute for a templating system within Dart. With [hot reloading](https://pub.dev/packages/angel3_hot), you won't even need to reload your server (as it should be).
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## Installation
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In your `pubspec.yaml`:
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```yaml
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dependencies:
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angel3_html: ^6.0.0
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```
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## Usage
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The `renderHtml` function does all the magic for you.
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```dart
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configureServer(Angel app) async {
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// Wire it up!
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app.fallback(renderHtml());
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// You can pass a custom StringRenderer if you need more control over the output.
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app.fallback(renderHtml(renderer: new StringRenderer(html5: false)));
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app.get('/greet/:name', (RequestContext req) {
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return html(lang: 'en', c: [
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head(c: [
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meta(name: 'viewport', content: 'width=device-width, initial-scale=1'),
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title(c: [
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text('Greetings!')
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]),
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]),
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body(c: [
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h1(c: [
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text('Hello, ${req.params['id']}!'),
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]),
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]),
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]);
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});
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}
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```
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By default, `renderHtml` will ignore the client's `Accept` header. However, if you pass `enforceAcceptHeader` as `true`, then a `406 Not Acceptable` error will be thrown if the client doesn't accept `*/*` or `text/html`.
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```dart
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configureServer(Angel app) async {
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// Wire it up!
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app.fallback(renderHtml(enforceAcceptHeader: true));
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// ...
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}
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```
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