InvoiceShelf/.cursor/skills/medialibrary-development/SKILL.md

name, description, license, metadata

name	description	license	metadata
medialibrary-development	Build and work with spatie/laravel-medialibrary features including associating files with Eloquent models, defining media collections and conversions, generating responsive images, and retrieving media URLs and paths.	MIT	author Spatie

Media Library Development

Overview

Use spatie/laravel-medialibrary to associate files with Eloquent models. Supports image/video conversions, responsive images, multiple collections, and various storage disks.

When to Activate

• Activate when working with file uploads, media attachments, or image processing in Laravel.
• Activate when code references HasMedia, InteractsWithMedia, the Media model, or media collections/conversions.
• Activate when the user wants to add, retrieve, convert, or manage files attached to Eloquent models.

Scope

• In scope: media uploads, collections, conversions, responsive images, custom properties, file retrieval, path/URL generation.
• Out of scope: general file storage without Eloquent association, non-Laravel frameworks.

Workflow

1. Identify the task (model setup, adding media, defining conversions, retrieving files, etc.).
2. Read references/medialibrary-guide.md and focus on the relevant section.
3. Apply the patterns from the reference, keeping code minimal and Laravel-native.

Core Concepts

Model Setup

Every model that should have media must implement HasMedia and use the InteractsWithMedia trait:

use Spatie\MediaLibrary\HasMedia;
use Spatie\MediaLibrary\InteractsWithMedia;

class BlogPost extends Model implements HasMedia
{
    use InteractsWithMedia;
}

Adding Media

$blogPost->addMedia($file)->toMediaCollection('images');
$blogPost->addMediaFromUrl($url)->toMediaCollection('images');
$blogPost->addMediaFromRequest('file')->toMediaCollection('images');

Defining Collections

public function registerMediaCollections(): void
{
    $this->addMediaCollection('avatar')->singleFile();
    $this->addMediaCollection('downloads')->useDisk('s3');
}

Defining Conversions

use Spatie\MediaLibrary\MediaCollections\Models\Media;
use Spatie\Image\Enums\Fit;

public function registerMediaConversions(?Media $media = null): void
{
    $this->addMediaConversion('thumb')
        ->fit(Fit::Contain, 300, 300)
        ->nonQueued();
}

Retrieving Media

$url = $model->getFirstMediaUrl('images');
$thumbUrl = $model->getFirstMediaUrl('images', 'thumb');
$allMedia = $model->getMedia('images');

Do and Don't

Do:

• Always implement the HasMedia interface alongside the InteractsWithMedia trait.
• Use ?Media $media = null as the parameter for registerMediaConversions().
• Call ->toMediaCollection() to finalize adding media.
• Use ->nonQueued() for conversions that should run synchronously.
• Use ->singleFile() on collections that should only hold one file.
• Use Spatie\Image\Enums\Fit enum values for fit methods.

Don't:

• Don't forget to run php artisan vendor:publish --provider="Spatie\MediaLibrary\MediaLibraryServiceProvider" --tag="medialibrary-migrations" before migrating.
• Don't use env() for disk configuration; use config() or set it in config/media-library.php.
• Don't call addMedia() without calling toMediaCollection() — the media won't be saved.
• Don't reference conversion names that aren't registered in registerMediaConversions().

References

• references/medialibrary-guide.md