Uploader Trait for Laravel Models

This package is to simplify upload handling in a Laravel application. Should work for both Laravel 5 and Lumen.

Key features:

1. Simple to use
2. Extendable
3. Handles both single and multiple uploads

Core Concepts

1. All uploads belongs to a record in the database
2. File upload handling, manipulation and saving are done by passing it through a set of filters in series (à la gulp).
3. You can create your own filters.

Installation

1. Install it in your application: composer require sands/uploadable
2. Add Sands\Uploadable\UploadableServiceProvider::class into your app/config/app.php file, inside the providers array.
3. Publish the package's migration: php artisan vendor:publish.
4. Run php artisan migrate to create the uploads table.

Usage

Use the UploadableTrait trait inside your model

use Sands\Uploadable\UploadableTrait;
class Task extends Model
{
    use UploadableTrait;   
    ...
}

Add a $uploadableConfig array property inside your model file:

protected $uploadableConfig = [
	// handle <input type="file" name="images"/> or <input type="file" name="images[]" multiple/>
    'images' => [
        'fix-image-orientation', // fixes the image orientation
        'save',                  // saves the image prefixed wth "original-"
        'resize-image:800',      // resize the image to 800px width, maintain aspect ratio
        'save:medium',           // saves the image prefixed with "medium-"
        'resize-image:400',      // resize the image to 400px width, maintain aspect ratio
        'save:small',            // saves the image prefixed with "small-"
        'thumbnail-image:140',   // creates a 140px x 140px thumbnail of the image, resized then center cropped
        'save:thumbnail',        // saves the image prefixed with "thumbnail-"
    ],
    // handle <input type="file" name="images[main]"/> use 'dot' notation
    'images.main' => [
        ...
    ],
];

In the model's boot method, listen for saved and deleted events to attach and detach files to the model:

public static function boot()
{
    self::saved(function (Task $task) {
        $task->attachFiles();
    });
    self::deleted(function (Task $task) {
        $task->detachFiles();
    });
}

Whenever the model is saved, this package will look for any matching uploadableConfig with the request. If there are any, the uploaded file will be passed through the configured filter. Each t

Built-in Filters

Fix Image Orientation Filter

Fixes the image orientation.

Filter name: fix-image-orientation

Resize Image Filter

Manipulates the image size.

Filter name: resize-image

Filter arguments:

1. number default: 800 Target width in pixels
2. number default: 800 Target height in pixels
3. boolean default: true Constrain the aspect ratio while resizing
4. boolean default: false Constrain upsize. Do not upsize the image while resizing

Thumbnail Image Filter

Manipulates the image to be resized and center cropped.

Filter name: thumbnail-image

Filter arguments:

1. number default: 140 Target width and height in pixels
2. string default: #000000 Fill with this color if there is empty area after cropping

Save Filter

Saves the modified image into an obfuscated directory inside the public/uploads directory. Each time the save filter is triggered, a new entry will be inserted into the uploads table.

Filter name: save

Filter arguments:

1. string default: original- Prefixes the file name with this string.

Getting Uploads Related to a Model

Relationship between a model and uploads are implemented with the simple Laravel's morphMany method. You can access the files simply by $task->uploads. This will return all files and their mutations related to a model.

To filter through the files related to a model you can simply do $task->uploads()->where() ... .

There is also a shorthand files($type = null, $prefix = null) method that takes $type argument where it filters the type of file uploaded (images in the above example) and $prefix argument where it will search for uploads with the prefix. This method will return an Eloquent query so you can further refine the search.

The upload object properties are as per below:

{
     "id": 5,
     "uploadable_type": "App\\Task",
     "uploadable_id": "2",
     "type": "images",
     "name": "original-2016-03-12-121732-am.png",
     "mime_type": "image/png",
     "url": "/uploads/MjAxNjAz/YXBwdGFzazI,/original-2016-03-12-121732-am.png",
     "path": "/var/www/project/public/uploads/MjAxNjAz/YXBwdGFzazI,/original-2016-03-12-121732-am.png",
     "created_at": "2016-03-30 21:52:20",
     "updated_at": "2016-03-30 21:52:20",
}

Example for getting an uploaded image's URL:

<ul>
@foreach($tasks as $task)
    <li>
    	<img src="{{$task->files(null, 'thumbnail-')->first()->url}}" alt="">
        {{$task->name}}
    </li>
@endforeach
</ul>

Creating Your Own Filter

It is very easy to create your own filter:

1. Create a class that implements Sands\Uploadable\FilterInterface.
2. Register the filter: app('uploadable')->registerFilter('filterName', 'filterClass').
3. There is no step 3.

For example, lets say that we want to rotate all uploaded images by a certain configurable degrees:

Create a RotateImage class:

namespace App\Filters\RotateImage;
use Sands\Uploadable\FilterInterface;

class RotateImage implements FilterInterface
{
    public function process($type, $file, $model)
    {
        $image = app('image')->make($file->getPathname());
        $image->rotate($this->degrees);
        $image->save();
    }

    public function __construct($degrees = 0)
    {
        $this->degrees = $degrees;
    }
}

Register the filter:

namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use App\Filters\RotateImage;

class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        app('uploadable')->registerFilter('rotate-image', RotateImage::class);
    }
    ....
}

Use it in your model:

use Sands\Uploadable\UploadableTrait;
class Task extends Model
{
    use UploadableTrait;
    protected $uploadableConfig = [
        'images' => [
            'rotate-image:63', // rotate the image by 63 degrees
            'save',            // save the image
        ],
    ];
    ...   
}

Thats it!

Contributing

You are more than welcome to submit issues on bugs, feature requests or questions related to this project. Fork and send a pull request if you would want to contribute code. This project follows PSR-2 coding style.

License

The MIT License (MIT) Copyright (c) 2016 Sands Consulting Sdn. Bhd.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.