add nova

nova/src/Fields/Deletable.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace Laravel\Nova\Fields;
+
+trait Deletable
+{
+    /**
+     * The callback used to delete the field.
+     *
+     * @var callable|null
+     */
+    public $deleteCallback;
+
+    /**
+     * Indicates if the underlying field is deletable.
+     *
+     * @var bool
+     */
+    public $deletable = true;
+
+    /**
+     * Indicates if the underlying field is prunable.
+     *
+     * @var bool
+     */
+    public $prunable = false;
+
+    /**
+     * Specify the callback that should be used to delete the field.
+     *
+     * @param  callable  $deleteCallback
+     * @return $this
+     */
+    public function delete(callable $deleteCallback)
+    {
+        $this->deleteCallback = $deleteCallback;
+
+        return $this;
+    }
+
+    /**
+     * Specify if the underlying file is able to be deleted.
+     *
+     * @param  bool  $deletable
+     * @return $this
+     */
+    public function deletable($deletable = true)
+    {
+        $this->deletable = $deletable;
+
+        return $this;
+    }
+
+    /**
+     * Determine if the underlying file should be pruned when the resource is deleted.
+     *
+     * @return bool
+     */
+    public function isPrunable()
+    {
+        return $this->prunable;
+    }
+
+    /**
+     * Specify if the underlying file should be pruned when the resource is deleted.
+     *
+     * @param  bool  $prunable
+     * @return $this
+     */
+    public function prunable($prunable = true)
+    {
+        $this->prunable = $prunable;
+
+        return $this;
+    }
+}