Add tag filter to lists (#1124)

app/Filament/Admin/Resources/EggResource/Pages/ListEggs.php

@@ -7,6 +7,7 @@ use App\Filament\Components\Actions\ImportEggAction as ImportEggHeaderAction;
 use App\Filament\Components\Tables\Actions\ExportEggAction;
 use App\Filament\Components\Tables\Actions\ImportEggAction;
 use App\Filament\Components\Tables\Actions\UpdateEggAction;
+use App\Filament\Components\Tables\Filters\TagsFilter;
 use App\Models\Egg;
 use Filament\Actions\CreateAction as CreateHeaderAction;
 use Filament\Resources\Pages\ListRecords;
@@ -77,6 +78,10 @@ class ListEggs extends ListRecords
                 CreateAction::make(),
                 ImportEggAction::make()
                     ->multiple(),
+            ])
+            ->filters([
+                TagsFilter::make()
+                    ->model(Egg::class),
             ]);
     }
 

app/Filament/Admin/Resources/NodeResource/Pages/ListNodes.php

@@ -4,6 +4,7 @@ namespace App\Filament\Admin\Resources\NodeResource\Pages;
 
 use App\Filament\Admin\Resources\NodeResource;
 use App\Filament\Components\Tables\Columns\NodeHealthColumn;
+use App\Filament\Components\Tables\Filters\TagsFilter;
 use App\Models\Node;
 use Filament\Actions;
 use Filament\Resources\Pages\ListRecords;
@@ -65,6 +66,10 @@ class ListNodes extends ListRecords
             ->emptyStateHeading(trans('admin/node.no_nodes'))
             ->emptyStateActions([
                 CreateAction::make(),
+            ])
+            ->filters([
+                TagsFilter::make()
+                    ->model(Node::class),
             ]);
     }
 

app/Filament/Components/Tables/Filters/TagsFilter.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Filament\Components\Tables\Filters;
+
+use Filament\Forms\Components\Field;
+use Filament\Forms\Components\Select;
+use Filament\Tables\Filters\BaseFilter;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Collection;
+
+class TagsFilter extends BaseFilter
+{
+    protected string $model;
+
+    public static function getDefaultName(): ?string
+    {
+        return 'tags';
+    }
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->query(fn (Builder $query, array $data) => $query->when($data['tag'], fn (Builder $query, $tag) => $query->whereJsonContains('tags', $tag)));
+
+        $this->indicateUsing(fn (array $data) => $data['tag'] ? 'Tag: ' . $data['tag'] : null);
+
+        $this->resetState(['tag' => null]);
+
+        $this->visible(fn () => $this->getTags()->count() > 0);
+    }
+
+    private function getTags(): Collection
+    {
+        return $this->getModel()::query()->pluck('tags')->flatten()->unique();
+    }
+
+    public function getFormField(): Field
+    {
+        return Select::make('tag')
+            ->preload()
+            ->searchable()
+            ->options(fn () => $this->getTags()->mapWithKeys(fn ($tag) => [$tag => $tag]));
+    }
+
+    public function model(string $model): static
+    {
+        $this->model = $model;
+
+        return $this;
+    }
+
+    public function getModel(): string
+    {
+        return $this->model;
+    }
+}