add nova

nova/src/Fields/Gravatar.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Laravel\Nova\Fields;
+
+/**
+ * @method static static make(mixed $name = 'Avatar', string|null $attribute = 'email')
+ */
+class Gravatar extends Avatar implements Unfillable
+{
+    /**
+     * Create a new field.
+     *
+     * @param  string  $name
+     * @param  string|null  $attribute
+     * @return void
+     */
+    public function __construct($name = 'Avatar', $attribute = 'email')
+    {
+        parent::__construct($name, $attribute ?? 'email');
+
+        $this->exceptOnForms();
+    }
+
+    /**
+     * Resolve the given attribute from the given resource.
+     *
+     * @param  mixed  $resource
+     * @param  string  $attribute
+     * @return mixed
+     */
+    protected function resolveAttribute($resource, $attribute)
+    {
+        $callback = function () use ($resource, $attribute) {
+            return 'https://www.gravatar.com/avatar/'.md5(strtolower(parent::resolveAttribute($resource, $attribute))).'?s=300';
+        };
+
+        $this->preview($callback)->thumbnail($callback);
+    }
+
+    /**
+     * Prepare the field for JSON serialization.
+     *
+     * @return array<string, mixed>
+     */
+    public function jsonSerialize(): array
+    {
+        return array_merge([
+            'indexName' => '',
+        ], parent::jsonSerialize());
+    }
+}