platform/packages/html/lib/angel_html.dart
2021-06-20 20:37:20 +08:00

35 lines
1.1 KiB
Dart

import 'dart:async';
import 'package:angel_framework/angel_framework.dart';
import 'package:html_builder/html_builder.dart';
/// Returns a [RequestMiddleware] that allows you to return `html_builder` [Node]s as responses.
///
/// You can provide a custom [renderer]. The default renders minified HTML5 pages.
///
/// Set [enforceAcceptHeader] to `true` to throw a `406 Not Acceptable` if the client doesn't accept HTML responses.
RequestHandler renderHtml({StringRenderer? renderer, bool? enforceAcceptHeader}) {
renderer ??= StringRenderer(pretty: false, html5: true);
return (RequestContext req, ResponseContext res) {
var oldSerializer = res.serializer;
res.serializer = (data) {
if (data is! Node) {
return oldSerializer!(data);
} else {
if (enforceAcceptHeader == true && !req.accepts('text/html')) {
throw AngelHttpException.notAcceptable();
}
var content = renderer!.render(data);
res
..headers['content-type'] = 'text/html'
..write(content);
res.close();
return '';
}
};
return Future<bool>.value(true);
};
}