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modules/User/Models/IdentityLog.php

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+<?php
+
+namespace Modules\User\Models;
+
+use App\Models\Model;
+use App\Traits\OrderByIdDesc;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Modules\User\Traits\BelongsToUser;
+
+class IdentityLog extends Model
+{
+
+    use BelongsToUser, OrderByIdDesc;
+
+    protected $table = 'user_identity_logs';
+
+    protected $casts = [
+        'source' => 'json',
+    ];
+
+    const CHANNEL_AUTO = 'Auto';
+    const CHANNEL_REG  = 'Reg';
+
+    const CHANNEL_SYSTEM = 'System';
+
+    const CHANNEL_MAP = [
+        self::CHANNEL_AUTO   => '自动变更',
+        self::CHANNEL_REG    => '注册默认',
+        self::CHANNEL_SYSTEM => '后台变更',
+    ];
+
+    public function before_identity(): BelongsTo
+    {
+        return $this->belongsTo(Identity::class, 'before')->withDefault([
+            'name' => '已删除',
+        ]);
+    }
+
+    public function after_identity(): BelongsTo
+    {
+        return $this->belongsTo(Identity::class, 'after')->withDefault([
+            'name' => '已删除',
+        ]);
+    }
+
+}