暂存

vendor/illuminate/database/Eloquent/HasCollection.php

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+<?php
+
+namespace Illuminate\Database\Eloquent;
+
+use Illuminate\Database\Eloquent\Attributes\CollectedBy;
+use ReflectionClass;
+
+/**
+ * @template TCollection of \Illuminate\Database\Eloquent\Collection
+ */
+trait HasCollection
+{
+    /**
+     * The resolved collection class names by model.
+     *
+     * @var array<class-string<static>, class-string<TCollection>>
+     */
+    protected static array $resolvedCollectionClasses = [];
+
+    /**
+     * Create a new Eloquent Collection instance.
+     *
+     * @param  array<array-key, \Illuminate\Database\Eloquent\Model>  $models
+     * @return TCollection
+     */
+    public function newCollection(array $models = [])
+    {
+        static::$resolvedCollectionClasses[static::class] ??= ($this->resolveCollectionFromAttribute() ?? static::$collectionClass);
+
+        $collection = new static::$resolvedCollectionClasses[static::class]($models);
+
+        if (Model::isAutomaticallyEagerLoadingRelationships()) {
+            $collection->withRelationshipAutoloading();
+        }
+
+        return $collection;
+    }
+
+    /**
+     * Resolve the collection class name from the CollectedBy attribute.
+     *
+     * @return class-string<TCollection>|null
+     */
+    public function resolveCollectionFromAttribute()
+    {
+        $reflection = new ReflectionClass(static::class);
+
+        do {
+            $attributes = $reflection->getAttributes(CollectedBy::class);
+
+            if (isset($attributes[0], $attributes[0]->getArguments()[0])) {
+                return $attributes[0]->getArguments()[0];
+            }
+        } while ($reflection = $reflection->getParentClass());
+
+        return null;
+    }
+}