Lcn Image Uploader Bundle Laravel Package

Getting Started

Before anything: this is a Symfony2 bundle, not a Laravel package. There is no service provider, no config/lcn-image-uploader.php, and no facade. Dropping it into a Laravel app will not work — you are either evaluating it for a legacy Symfony project, or reading it as a reference implementation to port. Decide which before you spend time on it, because the two paths look very different.

If you are on Symfony2 (the only supported path):

1. composer require locaine/lcn-image-uploader-bundle (expect a ~2.x Symfony constraint; check composer.json before assuming it installs alongside anything modern).
2. Register the bundle in app/AppKernel.php under new Lcn\ImageUploaderBundle\LcnImageUploaderBundle().
3. Import the bundle routing in app/config/routing.yml — this is the actual upload endpoint the JS talks to:

   lcn_image_uploader:
       resource: "@LcnImageUploaderBundle/Resources/config/routing.yml"
       prefix:   /upload
   

4. Publish assets: php app/console assets:install web --symlink.
5. Add the config block under the bundle's alias (inspect DependencyInjection/Configuration.php for the real root key and defaults — don't guess at lcn_image_uploader: vs lcn_image_upload:).

Where to look first, in order: Controller/ (the upload action and its JSON response shape), DependencyInjection/Configuration.php (every knob you can turn), Resources/public/js (what the widget actually posts — field name, expected response keys), then Resources/config/services.yml for the storage/handler service you can override.

First use case to prove it out: a single "cover image" field on an entity. Render the uploader widget, let it POST to the bundle route, confirm you get back a JSON payload with a stored filename, then persist that filename in a hidden form field on submit. If that round trip works, the rest is variations.

Implementation Patterns

Treat the bundle as an endpoint, not a form type. The valuable part is the upload action that accepts a multipart POST, validates and renames the file, and returns JSON. Wire your own form around it:

// Controller
public function saveAction(Request $request)
{
    $form = $this->createForm(new ArticleType(), $article);
    $form->handleRequest($request);

    // filename arrives from the JS widget via a hidden input
    $article->setCoverImage($form->get('cover_image')->getData());
    // ... persist
}

The hidden field holds the stored filename; the bundle has already written the bytes to disk on upload. This decouples "upload" from "save the entity" and gives you instant previews — which is the whole point.

Persist a filename, not a blob. Store the returned name (or relative path) in a string column. Resolve the public URL at render time through whatever the bundle exposes as its web path config, so you can move the directory later without a data migration.

Pair it with a JS widget rather than relying on the bundled one. Symfony2-era bundle JS is typically jQuery + a plugin, and it is usually the most brittle piece. The endpoint contract is simple enough (POST a file, get JSON) that swapping in a maintained uploader or a small XMLHttpRequest wrapper is often less work than debugging the shipped script.

Multiple images / galleries: run one uploader per file, collect the returned filenames into a JSON-encoded hidden input, and let the widget manage ordering client-side. Don't try to make the endpoint accept arrays unless the controller already supports it.

Validation belongs on both sides. The bundle will likely whitelist mime types and enforce a max size from config, but re-validate the filename server-side before persisting — a client can post any string into your hidden field, including a path that escapes the upload directory.

Porting to Laravel is the realistic path if you're reading this from a Laravel codebase. The surface is small: a controller action, a storage service, a JS widget. Reimplement as a route + $request->validate(['file' => 'image|max:5120']) + Storage::disk('public')->putFile(...) returning { "name": ..., "url": ... }. Budget half a day, not a week — but don't copy the code, copy the contract.

Gotchas and Tips

• Symfony2 is long EOL. No security patches since 2018. Anything you build on this inherits that. This alone should push you toward the port-it option.
• Zero stars, zero dependents. No ecosystem, no issue history to search, no community to ask. Assume you are the only person debugging it and read the source rather than looking for docs — there probably aren't any beyond the README.
• Framework mismatch is the headline. There is no Laravel integration, no Artisan command, no config publish. Any tutorial you find will be app/console-flavored and won't map cleanly.
• Orphaned files. Upload writes to disk immediately; if the user uploads and then abandons the form, the file stays. Plan a cleanup job that deletes files older than N hours with no reference in your table, or accept slow disk creep.
• Permissions and paths. web/uploads/ style destinations need www-data write access and an .htaccess denying script execution. A writable upload directory that also serves PHP is a well-known footgun — verify this on day one.
• CSRF on the ajax endpoint. If your app enforces CSRF globally, the upload POST will be rejected. Check the bundle's routing/controller for a token parameter and pass it from the widget, or scope the CSRF exemption narrowly to the upload route only.
• Asset publishing is easy to forget. Blank widget, 404 on the JS, no visible error — usually assets:install was skipped or the symlink points at a stale path after a composer update.
• Filename collisions. Two users uploading IMG_0001.jpg simultaneously is a real scenario. Confirm the bundle randomizes names; if not, override the storage service in your app config (that's the intended extension point — rebind the handler service id) or patch it.
• Config key names are the #1 source of "nothing happens." Symfony silently ignores unknown config keys in some setups. Dump the resolved config and the service definitions to confirm the bundle actually sees your values rather than assuming.
• Debugging order: browser network tab (what was posted, what came back) → Symfony log for the upload action → debug:container to confirm which service implementation is live. Most failures are in step one.
• Check the license and last commit date before committing to it. A bundle with no commits in years and no license file is a legal and maintenance liability, not just a technical one.