#29: Album permissions are now checked when retrieving photos linked with a label. Labels are displayed in the gallery with their own views.

app/Helpers/DbHelper.php

@@ -9,6 +9,21 @@ use Illuminate\Support\Facades\Auth;
 
 class DbHelper
 {
+    public static function getAlbumIDsForCurrentUser()
+    {
+        $query = self::getAlbumsForCurrentUser_NonPaged();
+        $query->select('albums.id');
+
+        $ids = [];
+
+        foreach ($query->get() as $album)
+        {
+            $ids[] = $album->id;
+        }
+
+        return $ids;
+    }
+
     public static function getAlbumsForCurrentUser($parentID = -1)
     {
         $query = self::getAlbumsForCurrentUser_NonPaged();

app/Http/Controllers/Gallery/LabelController.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Http\Controllers\Gallery;
+
+use App\Facade\Theme;
+use App\Facade\UserConfig;
+use App\Helpers\DbHelper;
+use App\Http\Controllers\Controller;
+use App\Label;
+use Illuminate\Support\Facades\App;
+use Illuminate\Support\Facades\DB;
+use Symfony\Component\HttpFoundation\Request;
+
+class LabelController extends Controller
+{
+    public function index(Request $request, $labelAlias)
+    {
+        $label = Label::where('url_alias', $labelAlias)->first();
+        if (is_null($label))
+        {
+            App::abort(404);
+        }
+
+        $validViews = UserConfig::allowedAlbumViews();
+        $requestedView = strtolower($request->get('view'));
+        if (!in_array($requestedView, $validViews))
+        {
+            $requestedView = $validViews[0];
+        }
+
+        $allowedAlbumIDs = DbHelper::getAlbumIDsForCurrentUser();
+
+        if ($label->photos()->count() == 0)
+        {
+            $requestedView = 'empty';
+            $photos = [];
+        }
+        else if ($requestedView != 'slideshow')
+        {
+            $photos = $label->photos()
+                ->where('album_id', $allowedAlbumIDs)
+                ->orderBy(DB::raw('COALESCE(photos.taken_at, photos.created_at)'))
+                ->paginate(UserConfig::get('items_per_page'));
+        }
+        else
+        {
+            // The slideshow view needs access to all photos, not paged
+            $photos = $label->photos()
+                ->where('album_id', $allowedAlbumIDs)
+                ->orderBy(DB::raw('COALESCE(photos.taken_at, photos.created_at)'))
+                ->get();
+        }
+
+        if (count($photos) == 0)
+        {
+            $requestedView = 'empty';
+        }
+
+        return Theme::render(sprintf('gallery.label_%s', $requestedView), [
+            'allowed_views' => $validViews,
+            'current_view' => $requestedView,
+            'label' => $label,
+            'photos' => $photos
+        ]);
+    }
+}

app/Label.php

@@ -2,6 +2,7 @@
 
 namespace App;
 
+use App\Helpers\MiscHelper;
 use Illuminate\Database\Eloquent\Model;
 
 class Label extends Model
@@ -12,9 +13,14 @@ class Label extends Model
      * @var array
      */
     protected $fillable = [
-        'name'
+        'name', 'url_alias'
     ];
 
+    public function generateAlias()
+    {
+        $this->url_alias = preg_replace('/[^a-z0-9\-]/', '-', strtolower($this->name));
+    }
+
     public function photos()
     {
         return $this->belongsToMany(Photo::class, 'photo_labels');

app/ModelObservers/LabelObserver.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace App\ModelObservers;
+
+use App\Label;
+
+class LabelObserver
+{
+    public function creating(Label $label)
+    {
+        $label->generateAlias();
+    }
+}

app/Providers/AppServiceProvider.php

@@ -8,7 +8,9 @@ use App\Helpers\ImageHelper;
 use App\Helpers\MiscHelper;
 use App\Helpers\ThemeHelper;
 use App\Helpers\ValidationHelper;
+use App\Label;
 use App\ModelObservers\AlbumObserver;
+use App\ModelObservers\LabelObserver;
 use Illuminate\Database\QueryException;
 use Illuminate\Mail\Mailer;
 use Illuminate\Pagination\LengthAwarePaginator;
@@ -47,6 +49,7 @@ class AppServiceProvider extends ServiceProvider
 
         // Model observers
         Album::observe(AlbumObserver::class);
+        Label::observe(LabelObserver::class);
 
         // Configure our default pager
         if (MiscHelper::isAppInstalled())

database/migrations/2017_09_10_080152_create_photo_labels_table.php

@@ -16,6 +16,7 @@ class CreatePhotoLabelsTable extends Migration
         Schema::create('labels', function ($table) {
             $table->increments('id');
             $table->string('name');
+            $table->string('url_alias');
             $table->timestamps();
         });
 

resources/lang/en/gallery.php

@@ -10,6 +10,10 @@ return [
     'back_to_album' => 'Back to :name',
     'index_no_results_heading' => 'Start something amazing',
     'index_no_results_text' => 'This gallery is currently empty. If you are the owner of this gallery, you can create new albums and upload photos using the :admin_link.',
+    'label_intro' => 'All photos tagged with the label ":name".',
+    'label_no_results_text' => 'No photos are tagged with the label ":name".',
+    'label_no_results_text_2' => 'If you are an admin of this gallery, you can upload and tag photos in the :admin_link.',
+    'labels' => 'Labels:',
     'manage_album_link' => 'Manage',
     'manage_album_link_2' => 'Manage Album',
     'open_album_link' => 'Open Album',

resources/views/themes/base/gallery/label_default.blade.php

@@ -0,0 +1,46 @@
+@extends('themes.base.layout')
+@section('title', $label->name)
+
+@section('breadcrumb')
+    <li class="breadcrumb-item"><a href="{{ route('home') }}"><i class="fa fa-fw fa-home"></i></a></li>
+    <li class="breadcrumb-item">{{ $label->name }}</li>
+@endsection
+
+@section('content')
+    <div class="container album-container">
+        <div class="row">
+            <div class="col">
+                <div class="pull-right">
+                    @include(\App\Facade\Theme::viewName('partials.album_view_selector'))
+                </div>
+
+                <h1 class="page-title">{{ $label->name }}</h1>
+                <p>@lang('gallery.label_intro', ['name' => $label->name])</p>
+                <div class="clearfix"><!-- --></div>
+                <hr/>
+            </div>
+        </div>
+
+        <div class="row">
+            @foreach ($photos as $photo)
+                <div class="col-sm-6 col-md-4 photo mb-3">
+                    <div class="card">
+                        <img src="{{ $photo->thumbnailUrl('preview') }}" alt="" class="card-img-top"/>
+                        <div class="card-body">
+                            <h4 class="card-title"><a href="{{ $photo->url() }}">{{ $photo->name }}</a></h4>
+                        </div>
+                        <div class="card-footer">
+                            <small class="text-muted"><i class="fa fa-fw fa-calendar"></i> {{ date(UserConfig::get('date_format'), strtotime(!is_null($photo->taken_at) ? $photo->taken_at : $photo->created_at)) }}</small>
+                        </div>
+                    </div>
+                </div>
+            @endforeach
+
+            <div class="row" style="margin-top: 15px;">
+                <div class="col text-center">
+                    {{ $photos->links() }}
+                </div>
+            </div>
+        </div>
+    </div>
+@endsection

resources/views/themes/base/gallery/label_empty.blade.php

@@ -0,0 +1,21 @@
+@extends('themes.base.layout')
+@section('title', $label->name)
+
+@section('breadcrumb')
+    <li class="breadcrumb-item"><a href="{{ route('home') }}"><i class="fa fa-fw fa-home"></i></a></li>
+    <li class="breadcrumb-item">{{ $label->name }}</li>
+@endsection
+
+@section('content')
+    <div class="container album-container">
+        <div class="row">
+            <div class="col text-center">
+                <h1>@lang('gallery.album_no_results_heading')</h1>
+                <p style="line-height: 1.6em;">@lang('gallery.label_no_results_text', ['name' => $label->name])</p>
+                <p style="margin-bottom: 30px; line-height: 1.6em;">@lang('gallery.label_no_results_text_2', ['admin_link' => sprintf('<a href="%s">%s</a>', route('admin'), trans('admin.title'))])</p>
+
+                <img src="{{ asset('themes/base/images/smartphone-photo.jpg') }}" class="img-fluid rounded" style="display: inline;" />
+            </div>
+        </div>
+    </div>
+@endsection

resources/views/themes/base/gallery/label_slideshow.blade.php

@@ -0,0 +1,76 @@
+@extends('themes.base.layout')
+@section('title', $label->name)
+
+@section('breadcrumb')
+    <li class="breadcrumb-item"><a href="{{ route('home') }}"><i class="fa fa-fw fa-home"></i></a></li>
+    <li class="breadcrumb-item">{{ $label->name }}</li>
+@endsection
+
+@section('content')
+<div class="container album-container album-slideshow-container" id="slideshow-container">
+    <div class="row">
+        <div class="col">
+            <div class="pull-right">
+                @include(\App\Facade\Theme::viewName('partials.album_view_selector'))
+            </div>
+
+            <h1 class="page-title">{{ $label->name }}</h1>
+            <p>@lang('gallery.label_intro', ['name' => $label->name])</p>
+            <div class="clearfix"><!-- --></div>
+            <hr/>
+        </div>
+    </div>
+
+    <div class="row">
+        <div class="col text-center">
+            <div class="pull-right">
+                <div class="btn btn-group">
+                    <button class="btn btn-secondary" v-on:click="pauseSlideshow" v-bind:disabled="isPaused" v-if="isRunning"><i class="fa fa-fw fa-pause"></i></button>
+                    <button class="btn btn-secondary" v-on:click="continueSlideshow" v-bind:disabled="!isPaused" v-if="isRunning"><i class="fa fa-fw fa-play"></i></button>
+                </div>
+            </div>
+
+            <div id="image-preview" v-if="current !== null">
+                <a v-bind:href="current.info_url" v-bind:title="current.description">
+                    <img class="rounded thumbnail" v-bind:src="current.original_url" v-bind:alt="current.name" v-bind:title="current.description"/>
+                </a>
+            </div>
+        </div>
+    </div>
+
+    <div class="row" style="margin-top: 15px;">
+        <div class="col">
+            <div class="thumbnails">
+                @foreach ($photos as $photo)
+                    <a href="{{ $photo->url() }}" v-on:click="changeCurrentImage({{ $photo->id }}); $event.preventDefault();">
+                        <img class="ss-thumbnail rounded" src="{{ $photo->thumbnailUrl('slideshow-tiny') }}" alt="{{ $photo->name }}" title="{{ $photo->description }}" data-photo-id="{{ $photo->id }}" data-original-url="{{ $photo->thumbnailUrl('fullsize') }}" data-info-url="{{ $photo->url() }}" />
+                    </a>
+                @endforeach
+            </div>
+        </div>
+    </div>
+</div>
+@endsection
+
+@push('scripts')
+<script type="text/javascript">
+    // TODO make this timeout configurable
+    var viewModel = new SlideShowViewModel(5000);
+
+    $(document).ready(function() {
+        $('img.ss-thumbnail').each(function(index, element)
+        {
+            viewModel.data.images.push({
+                'id': $(element).data('photo-id'),
+                'name': $(element).attr('alt'),
+                'description': $(element).attr('title'),
+                'original_url': $(element).data('original-url'),
+                'info_url': $(element).data('info-url')
+            });
+        });
+
+        var app = new Vue(viewModel);
+        app.startSlideshow();
+    });
+</script>
+@endpush

resources/views/themes/base/gallery/photo.blade.php

@@ -29,10 +29,23 @@
                 @if ($is_original_allowed)
                     <a href="{{ $photo->thumbnailUrl() }}">
                 @endif
-                <img src="{{ $photo->thumbnailUrl('fullsize') }}" alt="" class="img-thumbnail"/>
+                <img src="{{ $photo->thumbnailUrl('fullsize') }}" alt="" class="img-thumbnail mb-4"/>
                 @if ($is_original_allowed)
                     </a>
                 @endif
+
+                @if ($photo->labels()->count() > 0)
+                    <h4>@lang('gallery.labels')</h4>
+                    <ul class="nav nav-pills mb-4">
+                        @foreach ($photo->labels()->orderBy('name')->get() as $label)
+                            <li class="nav-item">
+                                <a class="nav-link" href="{{ route('viewLabel', ['labelAlias' => $label->url_alias]) }}">
+                                    <i class="fa fa-tag"></i> {{ $label->name }}
+                                </a>
+                            </li>
+                        @endforeach
+                    </ul>
+                @endif
             </div>
 
             <div class="col-sm-4">

routes/web.php

@@ -88,4 +88,7 @@ Route::get('p/{albumUrlAlias}/{photoFilename}', 'Gallery\PhotoController@show')
     ->where('albumUrlAlias', '.*');
 Route::get('i/{albumUrlAlias}/{photoFilename}', 'Gallery\PhotoController@download')
     ->name('downloadPhoto')
-    ->where('albumUrlAlias', '.*');
+    ->where('albumUrlAlias', '.*');
+Route::get('label/{labelAlias}', 'Gallery\LabelController@index')
+    ->name('viewLabel')
+    ->where('labelAlias', '.*');