mrimran · November 29, 2020 16:56 · Oct 24, 2019 · Oct 24, 2019
diff --git a/DuplicateResource.php b/DuplicateResource.php
@@ -0,0 +1,98 @@
+<?php
+
+namespace App\Nova\Actions;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Collection;
+use Laravel\Nova\Actions\Action;
+use Laravel\Nova\Fields\ActionFields;
+
+abstract class DuplicateResource extends Action {
+
+    use SerializesModels;
+
+    public $showOnDetail = true;
+    public $showOnIndex = false;
+    public $showOnTableRow = true;
+    public $confirmButtonText = 'Duplicate Resource';
+    public $cancelButtonText = 'Cancel';
+    public $confirmText = 'Are you sure you want to duplicate this resource?';
+    public $withoutActionEvents = true;
+
+    protected $keepRelations = [];
+    protected $duplicateRelations = [];
+
+    /**
+     * Perform the action on the given models.
+     *
+     * @param ActionFields $fields
+     * @param Collection   $models
+     *
+     * @return mixed
+     */
+    public function handle(ActionFields $fields, Collection $models)
+    {
+        if ($models->count() !== 1) {
+            return Action::danger("Cannot duplicate multiple models simultaneously.");
+        }
+
+        $model = $models->first();
+        $newModel = $model->replicate();
+
+        // Override values from fields
+        foreach ($fields->getAttributes() as $key => $value) {
+            if(isset($value)){
+                $newModel->$key = $value;
+            }
+        }
+
+        $newModel->push();
+
+        if (!empty($this->duplicateRelations)) {
+            // load the relations
+            $model->load($this->duplicateRelations);
+            foreach ($model->getRelations() as $relation => $items) {
+                // works for hasMany
+                foreach ($items as $item) {
+                    // clean up our models, remove the id and remove the appends
+                    unset($item->id);
+                    $item->setAppends([]);
+                    // create a relation on the new model with the data.
+                    $newModel->{$relation}()->create($item->toArray());
+                }
+            }
+        }
+
+        if (!empty($this->keepRelations)) {
+            // load the fresh model with relations to maintain
+            unset($model->relations);
+            $model->load($this->keepRelations);
+
+            foreach ($model->getRelations() as $relation => $items) {
+                // works for hasMany
+                foreach ($items as $item) {
+                    $newModel->{$relation}()->attach($item);
+                }
+            }
+        }
+
+        $newModel->save();
+
+        return Action::message($this->getSuccessMessage($model, $newModel, $fields));
+    }
+
+    protected function getSuccessMessage(Model $originalModel, Model $newModel, ActionFields $fields) : String {
+        return "Resource has been duplicated.";
+    }
+
+    /**
+     * Get the fields available on the action.
+     *
+     * @return array
+     */
+    public function fields()
+    {
+        return [];
+    }
+}
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