platform/README.md
2018-08-28 10:58:28 -04:00

67 lines
No EOL
2.3 KiB
Markdown

# static
[![Pub](https://img.shields.io/pub/v/angel_static.svg)](https://pub.dartlang.org/packages/angel_static)
[![build status](https://travis-ci.org/angel-dart/static.svg?branch=master)](https://travis-ci.org/angel-dart/static)
Static server middleware for Angel.
# Installation
In `pubspec.yaml`:
```yaml
dependencies:
angel_static: ^2.0.0-alpha
```
# Usage
To serve files from a directory, you need to create a `VirtualDirectory`.
Keep in mind that `angel_static` uses `package:file` instead of `dart:io`.
```dart
import 'package:angel_framework/angel_framework.dart';
import 'package:angel_static/angel_static.dart';
import 'package:file/local.dart';
main() async {
var app = new Angel();
var fs = const LocalFileSystem();
// Normal static server
var vDir = new VirtualDirectory(app, fs, source: new Directory('./public'));
// Send Cache-Control, ETag, etc. as well
var vDir = new CachingVirtualDirectory(app, fs, source: new Directory('./public'));
// Mount the VirtualDirectory's request handler
app.use(vDir.handleRequest);
// Start your server!!!
await app.startServer();
}
```
# Push State
`VirtualDirectory` also exposes a `pushState` method that returns a
request handler that serves the file at a given path as a fallback, unless
the user is requesting that file. This can be very useful for SPA's.
```dart
// Create VirtualDirectory as well
var vDir = new CachingVirtualDirectory(...);
// Mount it
app.use(vDir.handleRequest);
// Fallback to index.html on 404
app.use(vDir.pushState('index.html'));
```
# Options
The `VirtualDirectory` API accepts a few named parameters:
- **source**: A `Directory` containing the files to be served. If left null, then Angel will serve either from `web` (in development) or
`build/web` (in production), depending on your `ANGEL_ENV`.
- **indexFileNames**: A `List<String>` of filenames that should be served as index pages. Default is `['index.html']`.
- **publicPath**: To serve index files, you need to specify the virtual path under which
angel_static is serving your files. If you are not serving static files at the site root,
please include this.
- **callback**: Runs before sending a file to a client. Use this to set headers, etc. If it returns anything other than `null` or `true`,
then the callback's result will be sent to the user, instead of the file contents.