Image Caption Upload

• Features
• Requirements
• Installation
• Usage
• Options
  • captionPlaceholder(string|Closure $placeholder)
  • All native FileUpload options
• How it works
• License

A Filament v5 form component that extends the built-in FileUpload to attach a per-image caption beneath each uploaded file — with no build step required.

#Features

• Drop-in replacement — extends Filament's native FileUpload, so every existing option (->image(), ->multiple(), ->reorderable(), ->disk(), ->directory(), ->maxFiles(), …) works unchanged
• Zero build step — no npm, no Vite, no esbuild; pure Blade + Alpine.js inline
• Reorder-safe — captions follow their image through drag-and-drop reordering
• Duplicate-filename safe — maps FilePond internal IDs to Filament UUIDs directly, so ten files all named banner.jpg each keep their own caption
• Race-condition safe — captions typed before an upload finishes are preserved and migrated to the final UUID automatically
• Simple storage — saved as a plain [{image, caption}] JSON array in a single column; no extra tables or relationships needed

#Requirements

• PHP 8.2+
• Laravel 12+
• Filament 5.x

#Installation

Choose the version that matches your Filament installation:

# Filament 3.x
composer require imsyuan/filament-image-caption-upload "^1.0"

# Filament 4.x
composer require imsyuan/filament-image-caption-upload "^2.0"

# Filament 5.x
composer require imsyuan/filament-image-caption-upload "^3.0"

Laravel auto-discovers the service provider — no manual registration needed.

#Usage

use Imsyuan\ImageCaptionUpload\Forms\Components\ImageCaptionUpload;

ImageCaptionUpload::make('photos')
    ->multiple()
    ->image()
    ->reorderable()
    ->captionPlaceholder('Enter a caption…'),

Cast the column as an array in your model:

// app/Models/Post.php
protected $casts = [
    'photos' => 'array',
];

Each field saves an array of {image, caption} pairs:

[
  { "image": "photos/living-room.jpg", "caption": "Living room view" },
  { "image": "photos/kitchen.jpg",     "caption": "Kitchen detail" }
]

#Options

#captionPlaceholder(string|Closure $placeholder)

Sets the placeholder text shown inside each caption input. Accepts a plain string or a closure. Defaults to 'Caption...'.

// Static
->captionPlaceholder('Add a description…')

// Dynamic
->captionPlaceholder(fn () => __('fields.caption_placeholder'))

#All native FileUpload options

Because ImageCaptionUpload extends Filament's FileUpload directly, every built-in option is available:

ImageCaptionUpload::make('photos')
    ->multiple()
    ->image()
    ->maxFiles(10)
    ->reorderable()
    ->appendFiles()
    ->disk('s3')
    ->directory('photos')
    ->visibility('public')
    ->panelLayout('grid')
    ->imageResizeMode('cover')
    ->imageResizeTargetWidth('400')
    ->imageResizeTargetHeight('400'),

#How it works

1. Hydration — [{image, caption}] from the database is split on load: file paths go into Filament's UUID-keyed state; captions are stored in a sibling Livewire key (_icap_<fieldname>).
2. Alpine — A MutationObserver watches for FilePond item additions and injects a caption <input> beneath each file panel. Typing syncs directly to Livewire state via $wire.set().
3. UUID mapping — FilePond's internal IDs are mapped to Filament UUIDs by reading the FilePond instance directly (pond.getFiles()), ensuring correctness regardless of stored filename or UUID-based disk naming.
4. Dehydration — On save, {uuid: path} and {uuid: caption} are zipped back into [{image, caption}].

#License

MIT — see LICENSE.