Error: [InvalidArgumentException] Database [fooBar] not configured Laravel 5.4 - php

Question

I'm trying to write a migration for a new table.
public function up()
{
Schema::connection('fooBar')->create('tableOfThings', function (Blueprint $table) {
$table->increments('id');
$table->timestamps();
});
}
But when I run php artisan migration, I get the following error.
[InvalidArgumentException]
Database [fooBar] not configured.
This is what I have in config/database.php. You can see that I do infact have this DB configured.
'connections' => [
'foo_bar' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', 3306),
'database' => 'fooBar',
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => null,
],
// ...
]

Answer 1

Make sure the name of the configuration (not the database) is what you are passing to the connection.
DB::connection('foo_bar');
'connections' => [
THIS 'foo_bar' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', 3306),
NOT THIS 'database' => 'fooBar',
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => null,
],
// ...
]

Answer 2

You are trying to connect to the fooBar connection, but your connections array doesn't have that connection. It's called foo_bar instead.
Either change your connections configuration to fooBar or your schema connection call to foo_bar.
'connections' => [
'fooBar' => [ // Changed from foo_bar to fooBar.
// ...
],
// ...
]