add nova

nova/src/Fields/Image.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Laravel\Nova\Fields;
+
+use Illuminate\Support\Facades\Storage;
+use Laravel\Nova\Contracts\Cover;
+
+class Image extends File implements Cover
+{
+    use PresentsImages;
+
+    /**
+     * Indicates if the element should be shown on the index view.
+     *
+     * @var bool
+     */
+    public $showOnIndex = true;
+
+    const ASPECT_AUTO = 'aspect-auto';
+
+    const ASPECT_SQUARE = 'aspect-square';
+
+    /**
+     * Create a new field.
+     *
+     * @param  string  $name
+     * @param  string|null  $attribute
+     * @param  string|null  $disk
+     * @param  (callable(\Laravel\Nova\Http\Requests\NovaRequest, object, string, string, ?string, ?string):(mixed))|null  $storageCallback
+     * @return void
+     */
+    public function __construct($name, $attribute = null, $disk = null, $storageCallback = null)
+    {
+        parent::__construct($name, $attribute, $disk, $storageCallback);
+
+        $this->acceptedTypes('image/*');
+
+        $this->thumbnail(function () {
+            return $this->value ? Storage::disk($this->getStorageDisk())->url($this->value) : null;
+        })->preview(function () {
+            return $this->value ? Storage::disk($this->getStorageDisk())->url($this->value) : null;
+        });
+    }
+
+    /**
+     * Prepare the field element for JSON serialization.
+     *
+     * @return array<string, mixed>
+     */
+    public function jsonSerialize(): array
+    {
+        return array_merge(parent::jsonSerialize(), $this->imageAttributes());
+    }
+}