add nova

nova/src/Http/Requests/DeleteResourceRequest.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Laravel\Nova\Http\Requests;
+
+use Closure;
+use Illuminate\Support\Collection;
+
+/**
+ * @property-read string|array<int, mixed> $resources
+ */
+class DeleteResourceRequest extends DeletionRequest
+{
+    /**
+     * Get the selected models for the action in chunks.
+     *
+     * @param  int  $count
+     * @param  \Closure(\Illuminate\Support\Collection):void  $callback
+     * @return mixed
+     */
+    public function chunks($count, Closure $callback)
+    {
+        return $this->chunkWithAuthorization($count, $callback, function ($models) {
+            return $this->deletableModels($models);
+        });
+    }
+
+    /**
+     * Get the models that may be deleted.
+     *
+     * @param  \Illuminate\Support\Collection  $models
+     * @return \Illuminate\Support\Collection
+     */
+    protected function deletableModels(Collection $models)
+    {
+        return $models->mapInto($this->resource())
+                        ->filter
+                        ->authorizedToDelete($this)
+                        ->map->model();
+    }
+
+    /**
+     * Determine if the request is for a single resource only.
+     *
+     * @return bool
+     */
+    public function isForSingleResource()
+    {
+        return $this->resources !== 'all' && count($this->resources) == 1;
+    }
+}