OneBot: Leantime 改造版源码（BOM/Univer 表格/AI 接管/品牌替换等）

app/Core/Database/DatabaseServiceProvider.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Leantime\Core\Database;
+
+use Illuminate\Database\Connection;
+use Illuminate\Database\DatabaseServiceProvider as LaravelDatabaseServiceProvider;
+
+class DatabaseServiceProvider extends LaravelDatabaseServiceProvider
+{
+    /**
+     * Register any application services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        // Register Laravel's database service first
+        parent::register();
+
+        // Register custom PostgreSQL connection that handles empty-string-to-null conversion.
+        // MySQL silently coerces '' to NULL/zero for non-string columns; PostgreSQL does not.
+        Connection::resolverFor('pgsql', function ($connection, $database, $prefix, $config) {
+            return new LtPostgresConnection($connection, $database, $prefix, $config);
+        });
+
+        // Register Db as a singleton with proper dependency injection
+        app()->singleton(\Leantime\Core\Db\Db::class, function ($app) {
+            return new \Leantime\Core\Db\Db($app);
+        });
+    }
+}