暂存

vendor/illuminate/database/Eloquent/Concerns/TransformsToResource.php

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+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Database\Eloquent\Attributes\UseResource;
+use Illuminate\Http\Resources\Json\JsonResource;
+use Illuminate\Support\Str;
+use LogicException;
+use ReflectionClass;
+
+trait TransformsToResource
+{
+    /**
+     * Create a new resource object for the given resource.
+     *
+     * @param  class-string<\Illuminate\Http\Resources\Json\JsonResource>|null  $resourceClass
+     * @return \Illuminate\Http\Resources\Json\JsonResource
+     */
+    public function toResource(?string $resourceClass = null): JsonResource
+    {
+        if ($resourceClass === null) {
+            return $this->guessResource();
+        }
+
+        return $resourceClass::make($this);
+    }
+
+    /**
+     * Guess the resource class for the model.
+     *
+     * @return \Illuminate\Http\Resources\Json\JsonResource
+     *
+     * @throws \LogicException
+     */
+    protected function guessResource(): JsonResource
+    {
+        $resourceClass = $this->resolveResourceFromAttribute(static::class);
+
+        if ($resourceClass !== null && class_exists($resourceClass)) {
+            return $resourceClass::make($this);
+        }
+
+        foreach (static::guessResourceName() as $resourceClass) {
+            if (is_string($resourceClass) && class_exists($resourceClass)) {
+                return $resourceClass::make($this);
+            }
+        }
+
+        throw new LogicException(sprintf('Failed to find resource class for model [%s].', get_class($this)));
+    }
+
+    /**
+     * Guess the resource class name for the model.
+     *
+     * @return array{class-string<\Illuminate\Http\Resources\Json\JsonResource>, class-string<\Illuminate\Http\Resources\Json\JsonResource>}
+     */
+    public static function guessResourceName(): array
+    {
+        $modelClass = static::class;
+
+        if (! Str::contains($modelClass, '\\Models\\')) {
+            return [];
+        }
+
+        $relativeNamespace = Str::after($modelClass, '\\Models\\');
+
+        $relativeNamespace = Str::contains($relativeNamespace, '\\')
+            ? Str::before($relativeNamespace, '\\'.class_basename($modelClass))
+            : '';
+
+        $potentialResource = sprintf(
+            '%s\\Http\\Resources\\%s%s',
+            Str::before($modelClass, '\\Models'),
+            (string) $relativeNamespace !== '' ? $relativeNamespace.'\\' : '',
+            class_basename($modelClass)
+        );
+
+        return [$potentialResource.'Resource', $potentialResource];
+    }
+
+    /**
+     * Get the resource class from the class attribute.
+     *
+     * @param  class-string<\Illuminate\Http\Resources\Json\JsonResource>  $class
+     * @return class-string<*>|null
+     */
+    protected function resolveResourceFromAttribute(string $class): ?string
+    {
+        if (! class_exists($class)) {
+            return null;
+        }
+
+        $attributes = (new ReflectionClass($class))->getAttributes(UseResource::class);
+
+        return $attributes !== []
+            ? $attributes[0]->newInstance()->class
+            : null;
+    }
+}