暂存

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

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+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Support\Str;
+
+trait HasUuids
+{
+    use HasUniqueStringIds;
+
+    /**
+     * Generate a new unique key for the model.
+     *
+     * @return string
+     */
+    public function newUniqueId()
+    {
+        return (string) Str::uuid7();
+    }
+
+    /**
+     * Determine if given key is valid.
+     *
+     * @param  mixed  $value
+     * @return bool
+     */
+    protected function isValidUniqueId($value): bool
+    {
+        return Str::isUuid($value);
+    }
+}