项目初始化

app/common/model/Attachment.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\common\model;
+
+use app\common\model\traits\TimestampInteger;
+use support\think\Model;
+use think\model\relation\BelongsTo;
+
+class Attachment extends Model
+{
+    use TimestampInteger;
+
+    protected string $table = 'attachment';
+    protected string $pk = 'id';
+    protected bool $autoWriteTimestamp = true;
+    protected bool $updateTime = false;
+
+    protected array $append = ['suffix', 'full_url'];
+
+    public function getSuffixAttr($value, $row): string
+    {
+        if ($row['name'] ?? '') {
+            $suffix = strtolower(pathinfo($row['name'], PATHINFO_EXTENSION));
+            return $suffix && preg_match("/^[a-zA-Z0-9]+$/", $suffix) ? $suffix : 'file';
+        }
+        return 'file';
+    }
+
+    public function getFullUrlAttr($value, $row): string
+    {
+        return full_url($row['url'] ?? '');
+    }
+
+    public function admin(): BelongsTo
+    {
+        return $this->belongsTo(\app\admin\model\Admin::class, 'admin_id');
+    }
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+}