add nova

nova/src/Http/Controllers/ResourceAttachController.php

@@ -0,0 +1,150 @@
+<?php
+
+namespace Laravel\Nova\Http\Controllers;
+
+use DateTime;
+use Illuminate\Routing\Controller;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Validator;
+use Laravel\Nova\Http\Requests\NovaRequest;
+use Laravel\Nova\Nova;
+use Throwable;
+
+class ResourceAttachController extends Controller
+{
+    use HandlesCustomRelationKeys;
+
+    /**
+     * The action event for the action.
+     *
+     * @var \Laravel\Nova\Actions\ActionEvent|null
+     */
+    protected $actionEvent;
+
+    /**
+     * Attach a related resource to the given resource.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @return \Illuminate\Http\Response
+     */
+    public function __invoke(NovaRequest $request)
+    {
+        $resource = $request->resource();
+
+        $model = $request->findModelOrFail();
+
+        tap(new $resource($model), function ($resource) use ($request) {
+            abort_unless($resource->hasRelatableField($request, $request->viaRelationship), 404);
+        });
+
+        $this->validate($request, $model, $resource);
+
+        try {
+            DB::connection($model->getConnectionName())->transaction(function () use ($request, $resource, $model) {
+                [$pivot, $callbacks] = $resource::fillPivot(
+                    $request,
+                    $model,
+                    $this->initializePivot(
+                        $request,
+                        $model->{$request->viaRelationship}()
+                    )
+                );
+
+                DB::transaction(function () use ($request, $model, $pivot) {
+                    Nova::usingActionEvent(function ($actionEvent) use ($request, $model, $pivot) {
+                        $this->actionEvent = $actionEvent->forAttachedResource($request, $model, $pivot);
+                        $this->actionEvent->save();
+                    });
+                });
+
+                $pivot->save();
+
+                collect($callbacks)->each->__invoke();
+            });
+
+            return response()->noContent(200);
+        } catch (Throwable $e) {
+            optional($this->actionEvent)->delete();
+            throw $e;
+        }
+    }
+
+    /**
+     * Validate the attachment request.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  class-string<\Laravel\Nova\Resource>  $resourceClass
+     * @return void
+     */
+    protected function validate(NovaRequest $request, $model, $resourceClass)
+    {
+        $attribute = $resourceClass::validationAttachableAttributeFor($request, $request->relatedResource);
+
+        tap($this->creationRules($request, $resourceClass), function ($rules) use ($resourceClass, $request, $attribute) {
+            Validator::make($request->all(), $rules, [], $this->customRulesKeys($request, $attribute))->validate();
+
+            $resourceClass::validateForAttachment($request);
+        });
+    }
+
+    /**
+     * Return the validation rules used for the request. Correctly aasign the rules used
+     * to the main attribute if the user has defined a custom relation key.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @param  class-string<\Laravel\Nova\Resource>  $resourceClass
+     * @return mixed
+     */
+    protected function creationRules(NovaRequest $request, $resourceClass)
+    {
+        $rules = $resourceClass::creationRulesFor($request, $this->getRuleKey($request));
+
+        if ($this->usingCustomRelationKey($request)) {
+            $rules[$request->relatedResource] = $rules[$request->viaRelationship];
+            unset($rules[$request->viaRelationship]);
+        }
+
+        return $rules;
+    }
+
+    /**
+     * Initialize a fresh pivot model for the relationship.
+     *
+     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
+     * @param  \Illuminate\Database\Eloquent\Relations\BelongsToMany  $relationship
+     * @return \Illuminate\Database\Eloquent\Relations\Pivot
+     *
+     * @throws \Exception
+     */
+    protected function initializePivot(NovaRequest $request, $relationship)
+    {
+        $parentKey = $request->resourceId;
+        $relatedKey = $request->input($request->relatedResource);
+
+        $parentKeyName = $relationship->getParentKeyName();
+        $relatedKeyName = $relationship->getRelatedKeyName();
+
+        if ($parentKeyName !== $request->model()->getKeyName()) {
+            $parentKey = $request->findModelOrFail()->{$parentKeyName};
+        }
+
+        if ($relatedKeyName !== $request->newRelatedResource()::newModel()->getKeyName()) {
+            $relatedKey = $request->findRelatedModelOrFail()->{$relatedKeyName};
+        }
+
+        ($pivot = $relationship->newPivot($relationship->getDefaultPivotAttributes(), false))->forceFill([
+            $relationship->getForeignPivotKeyName() => $parentKey,
+            $relationship->getRelatedPivotKeyName() => $relatedKey,
+        ]);
+
+        if ($relationship->withTimestamps) {
+            $pivot->forceFill([
+                $relationship->createdAt() => new DateTime,
+                $relationship->updatedAt() => new DateTime,
+            ]);
+        }
+
+        return $pivot;
+    }
+}