I'm trying to change the database connection on login based on the user's company.
Here my user has a company and its DB is companyA .
Below is my LoginController where I changed the connection:
public function authenticated(Request $request,User $user)
{
\Config::set('database.connections.dynamicdb', array(
'driver' => 'mysql',
'host' => '127.0.0.1',
'database' => $user->company,
'username' => 'root',
'password' => '',
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'strict' => false,
'options' => [
\PDO::ATTR_EMULATE_PREPARES => true
]
));
return redirect()->intended($this->redirectPath());
}
So based on user->company
which is already defined in users table, the database name is changed.
But somehow it doesn't work. The error shown is
No database selected.
I tried below code to check if the values are set during login.
return \Config::get('database.connections.dynamicdb');
It showed all values set to my requirements. But when I check after login and reaching /home, the value of database in config is null.
So what all changes should I do. Is my technique right? Or is there any other solution for this.
In my Stock Model i have added the below lines:
protected $table = 'stocks';
protected $connection = 'dynamicdb';
And the query I'm running is just a get all query:
Stock::orderBy('tag_no','asc')->get()
Can anyone please tell me why this happens? What should i do?
All requests are stateless so current request doesn't know that you set new config value in previous request.
You should call Config::set(...)
every time when you want to use dynamic database and set database name getting this value from User
instance.
Setting above should be done using middleware and service provider .
Create new middleware and register it for web
middleware group (You may do this using the $middlewareGroups property of your HTTP kernel):
protected $middlewareGroups = [
'web' => [
//...
\App\Http\Middleware\YourMiddleware::class,
],
//...
];
Then:
<?php namespace App\Http\Middleware;
class YourMiddleware
{
public function handle($request, Closure $next)
{
if (Auth::check()) {
$database_name = Auth::user()->company;
// Set your config here using $user->company
// ...
}
return $next($request);
}
}
If you must to set this value once (during authentication), you should combine above code and sessions to store this information between requests:
session(['db_name' => $dbname]); // Set db_name and store it
$db_name = session('db_name'); // Get db_name from session
Read more about HTTP Sessions: https://laravel.com/docs/5.7/session#retrieving-data
First you need create new default db for connection and add to database.php like normal connection
'dynamicdb' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => 'default',
//others
],
next overriding model methods in Stock
protected $table = 'stocks';
protected $connection = 'dynamicdb';
/**
* @return string
*/
public function getTable()
{
$table = parent::getTable();
$database = config('database.connections.dynamicdb.database');
return starts_with($table, $database)
? $table
: $database . '.' . parent::getTable();
}
/**
* Set the table associated with the model.
*
* @param string $table
* @return $this
*/
public function setTable($table)
{
$database = config('database.connections.dynamicdb.database');
$this->table = starts_with($table, $database)
? $table
: $database . '.' . $table;
return $this;
}
Usage : \\Config::set('database.connections.dynamicdb.database',$user->company);
or you can create helper for it Don't forget this method work only one connection and connected user have access all databases
Add Multiple DB in .env
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=database1
DB_USERNAME=root
DB_PASSWORD=
ALT_DB_HOST=127.0.0.1
ALT_DB_PORT=3306
ALT_DB_DATABASE=database2
ALT_DB_USERNAME=root
ALT_DB_PASSWORD=
Edit config/database.php
'connections' => [
'mysql' => [
......
],
'alt_mysql' => [
'driver' => 'mysql',
'host' => env('ALT_DB_HOST', '127.0.0.1'),
'port' => env('ALT_DB_PORT', '3306'),
'database' => env('ALT_DB_DATABASE', 'vibecloud'),
...
],
If Whole model used for ALT_MYSQL then
protected $connection = 'alt_mysql';
ELSE
protected function stock_info() {
return \DB::connection('alt_mysql')->select('*')->from('stocks')->get();
}
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