Laravel 6 config()->get('database.connections.mysql') not matching DB:connection()

Question

Prerequisites

In my local environment I am working with multiple tenants and Redis (Auth required).
To serve the project I am using Valet.

For this case I am addressing these two connections:

- basic_foo (is defined in my .env)
- tenant_foo (is the one to change to during a request)

Until now I successfully changed the connections like so:

config()->set('database.connections.mysql', 
       array_merge(
        config()->get('database.connections.mysql') , 
        ['database' => 'tenant_foo']
    ); 

Problem

However, now I am seeing an issue with the query builder, keeping or falling back to the basic connection.

I get the expected connection results of tenant_foo (same for Redis) when I run

dd(config()->get('database.connections.mysql'));

I get the wrong but apparently active results of basic_foo when I run

dd(\DB::connection()); // returns Illuminate\Database\MySqlConnection

So all in all the app will return this Illuminate\Database\QueryException

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'basic_foo.table_bar' doesn't exist...

where it should search for

'tenant_foo.table_bar'

Things that did not solve the problem yet

• restarting Redis
• reinstalling Redis
• php artisan config:cache
• php artisan cache:clear
• php artisan route:clear
• php artisan view:clear
• php artisan optimize
• composer dump-autoload

Simply changing the database name to tenant_foo like below is not enough, as the config array remains the same of basic_foo.

\DB::connection()->setDatabaseName('tenant_foo');

Thoughts

• I want to change the config-array the of \DB::connection(), but I don't know another way than the config->set().
• I installed Telescope could this affect the db connection?
• Any other ideas?

Nitrogen

Is the missing quote ' a real TYPO or something you added/missed out when creating the question – Conant

missed upon creating the question, fixed it now. Thanks. – Nitrogen

Take a look at https://mcmap.net/q/1780877/-laravel-change-database-connection-for-a-specific-url - maybe it will help – Rehash

Changing config won't work since db singleton probably already exists. – Rumple

Isn't there a cache you need to clear... – Greenstein

Thanks @MarcinNabiałek I am pulling the tenants from a database table and would like to avoid hard coding them. Otherwise I could use that way though. – Nitrogen

Thanks @EliasSoares - do you know how to perform the way Marcin posted dynamically - without writing the tenants to a file? – Nitrogen

@Nitrogen What I mean you should try this: DB::disconnect(); Config::set('database.mysql.database', 'tenant_foo'); DB::reconnect(); – Rehash

Thanks @AlexBarker - as posted I think all caches are clear - also in the browser. Any caching I might have missed? – Nitrogen

@MarcinNabiałek that did it! - I (undocumented) tried the disconnect before, but did not reconnect. - Thank you so much. Would you mind adding this as an answer so I can set it as solution? – Nitrogen

@Nitrogen Done. You're welcome :) – Rehash

@Nitrogen php artisan config:cache cache:clear does do this one. – Greenstein

Thanks @AlexBarker - I thought I had noted it correctly. Sorry for the confusion. Updated it accordingly. – Nitrogen

Answer 1

To dynamically change database name you should use:

DB::disconnect(); 
Config::set('database.mysql.database', 'tenant_foo'); 
DB::reconnect();

Wintery

not working in my case! My laravel version is 5.6. Please help me ! – Subarctic

No longer working, see Malki Mohamed's answer .connections. needs to be added now with the new config structure – Hedonism

@Hedonism Not working in Laravel 6 or in Laravel 9? This question was asked for Laravel 6 so it's normal it might not work in Laravel 9, Laravel 20 or Laravel 100 – Rehash

@MarcinNabiałek just letting people know it no longer works for 8+ // Make sure you've disconnected first config()->set('database.connections.mysql.database', $account->username); $connection = DB::connection('mysql'); // Do stuff here $connection->disconnect(); – Hedonism

github.com/laravel/laravel/blob/6.x/config/database.php - shows that there is a connections array for laravel 6, so the Malki's answer actually still stands as the correct one – Hedonism

Answer 2

This worked for me:

\DB::disconnect('mysql'); 

Config::set('database.connections.mysql.database', 'tenant_foo');

\DB::reconnect('mysql');

Dezhnev