Two tables for one model in Laravel / Default (undeletable) rows - php

Question

I have two databases for my Laravel 8 project: DB_COMMON and DB_SYSTEM. The point is, that I want to separate sensitive data to avoid deleting, so I'll use one db_user (with all privileges) for DB_COMMON and another (without deleting or updating permissions) for DB_SYSTEM.It will be something like additional security layer.
And there are table/(-s), for exapmle, rbac_role. I want to store two roles as "system" (S_ADMIN and CUSTOMER) in DB_SYSTEM and allow user to create new roles in same table name (rbac_role), but in DB_COMMON. And usually I want to work with that roles in one place (one model).
Are there any way to do it?
Or, maybe, I can "push" this two roles in model? I mean merge rows from database table with my (maybe even hardcoded) rows in model?

Answer 1

First of all you have to create two separate connection in your config/database.php file.
mysql connection is default if you are using mysql database.
Copy that params and create new connection:
'connection2' => [
'driver' => 'mysql',
'url' => env('DATABASE_URL'),
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
...
],
Then you can specify any model to run on specific connection:
class RoleModel extends Model {
protected $connection = 'connection2';
...
}
When you call RoleModel it will connect to second database.
I don't fully get what you want, But if you want to select from rows from two database you can set connection dynamically and select rows from any table.
$first_rows = RoleModel::setConnection('mysql')->select('id', 'role')->get();
$second_rows = RoleModel::setConnection('connection2')->select('id', 'role')->get();
$combined_rows = $first_rows->merge($second_rows);
If you want to create new row in second connection depending whether same record exists in first connection:
if(RoleModel::setConnection('mysql')->where('role', 'somerole')->exists()){
RoleModel::setConnection('connection2')->create([
'role' => 'somerole'
]);
}
Hope this answer helps you