Multiple Databases Connecting in Laravel

 Hi :Guys !!

    You can use this method to combine multipal databse in laravel :

1. Install Laravel 5.8

First, let’s install Laravel 5.8 using the following command (Make sure to have composer installed in your PC) to Install Composer.

composer create-project --prefer-dist laravel/laravel multiDatabase

2. Configure Database Details

You need to configure the databases at MYSQL and then we need to connect that database to the Laravel project (You can also use phpmyadmin to create the database). Open the .env file inside Laravel project and add the database credentials as below.

.env

DB_CONNECTION=mysql
DB_HOST='Your DB Host'
DB_PORT='Your DB Port'
DB_DATABASE='Your DB Name'
DB_USERNAME='Your DB UserName'
DB_PASSWORD='Your DB Password'

DB_CONNECTION_2=mysql
DB_HOST_2='Your DB Host'
DB_PORT_2='Your DB Port'
DB_DATABASE_2='Your DB Name'
DB_USERNAME_2='Your DB UserName'
DB_PASSWORD_2='Your DB Password'
Code language: JavaScript (javascript)

In this step, Update “config/database.php” with following code to create database connections.

config/database.php

'default' => 'mysql',
'connections' => [

    'mysql' => [
        'driver' => env('DB_CONNECTION'),
        'host' => env('DB_HOST'),
        'port' => env('DB_PORT'),
        'database' => env('DB_DATABASE'),
        'username' => env('DB_USERNAME'),
        'password' => env('DB_PASSWORD'),
       ....
    ],

    'mysql2' => [
        'driver' => env('DB_CONNECTION_2'),
        'host' => env('DB_HOST_2'),
        'port' => env('DB_PORT_2'),
        'database' => env('DB_DATABASE_2'),
        'username' => env('DB_USERNAME_2'),
        'password' => env('DB_PASSWORD_2'),
       ....
    ]
]
Code language: PHP (php)

3. Create the migration file.

Go to the terminal and type the following php artisan command to generate the model and migration file.

php artisan make:migration create_multi_data_table
Code language: CSS (css)

The migration will be created under “database/migrations”. Edit the file with the code below to Create Multi Data Table.

create_multi_data_table.php

<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateMultiDataTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::connection('mysql2')->create('multiData', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->text('detail');
            $table->timestamps();
        });
    }

/**
 * Reverse the migrations.
 *
 * @return void
 */
public function down()
{
   Schema::connection('mysql2')->dropIfExists('multiData');
}
}
Code language: HTML, XML (xml)

Type the following command to run the migration.

php artisan migrate --database=mysql2

4. Create Controller and model

If you encounter any errors, Clear the cache by running the following command.

php artisan config:cache
Code language: CSS (css)

Create the multiData model using the following command.

php artisan make:model multiData
Code language: CSS (css)

The model wil be generated in “app/multiData.php” Now, we will write the schema inside multiData.php file. Specify the “$connection” variable as shown below.

multiData.php

<?php
namespace App;

use Illuminate\Database\Eloquent\Model;

class multiData extends Model
{
     protected $connection = 'mysql2';
}
Code language: HTML, XML (xml)

Create the MultiDataController by typing the following command.

php artisan make:controller MultiDataController
Code language: CSS (css)

app/Http/Controllers/MultiDataController.php

<?php
namespace App\Http\Controllers;

use App\Student;
use Illuminate\Http\Request;

class MultiDataController extends Controller
{

    public function yourMethod()
    {
        $multiData = new multiData;
        $multiData->setConnection('mysql2');
        $multi = $multiData->find(1);
        return $multi;
    }


}
Code language: HTML, XML (xml)

You can also define custom connection with query builder as shown below

DB::connection('mysql2')->select(...)->(...);
Code language: PHP (php)

Hope this tutorial helped you! Feel free to drop your opinion at the comment section.