Flysystem Fallback Plugin

Installation

Use Composer:

"thadbryson/flysystem-fallback": "@stable"

This is a plugin for the Flysystem project. https://github.com/thephpleague/flysystem

It allows you to create a Filesystem hierarchy. If a path isn't in one Filesystem it will go to the next one until it finds it. Or runs out of Filesystems.

Here is some example code to set everything up.

Primary

The $primary Filesystem is the main one. It gets checked 1st.

Fallbacks

The $fallback Filesystems are ones checked after $primary. They go in order in their array.

Example

use TCB\Flysystem\Fallback;
use TCB\Flysystem\FallbackPlugin;

use League\Flysystem\Filesystem;
use League\Flysystem\Adapter\Local as Adapter;

// So client #1 has their own theme.
$primary = new Filesystem(new Adapter('~/themes/client-1'));

// Let's set the fallbacks in order.
$fallbacks = [
    '1'       => new Filesystem(new Adapter('~/themes/red')),
    'default' => new Filesystem(new Adapter('~/themes/default')),
];

// Add the Plugin.
$primary->addPlugin(new FallbackPlugin());

// You can get the Fallback object from the 'getFallback()' plugin method.
$fallback = $primary->getFallback($fallbacks);

// OR - you can just create the Fallback object directly.
$fallback = new Fallback($primary, $fallbacks);

Methods you can call

These Filesystem methods are available on Fallback. The first Filesystem with the path found will return the result from that Filesystem or "hit".

NOTE: all these methods return FALSE if $path is not found.

• has(string $path): Do any of these Filesystems have this path?
• read(string $path): Read file contents from first "hit".
• readStream(string $path): Read a stream of the file contents from first "hit".

Other methods available:

• find(string $path): Returns the Filesystem object of the first hit.
• findIndex(string $path): Returns index string/int of Filesystem with $path. Will return FALSE if not found.