How can I add another database in my laravel project in heroku

Question

I have my laravel project deployed in heroku, but I only migrated the database that I have created eg: users, news. But I have another database that is not migrated from my laravel project. Meaning, it is a existing database and I'm only connecting it on my project. In my development stage, I can connect the second database using my codes below. But now, I will deploy my project in heroku and I dont know how can I connect the second database because in heroku's postgresSQL you can only create and migrate the database based on the migration folder in laravel. I dont know how to upload an sql file in heroku's postgresSql and in that way I can connect the second database using the codes below. Is this possible in heroku? Because the second database is important in my landing page. It includes some few select query.

Here are some of my codes including the connection of the second database.

.env

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:HoQcNyCc5KEGw4yjqpBIdKzTC+yeDoOJcerVMEVx+fs=
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=adminpanel
DB_USERNAME=root
DB_PASSWORD=

DB_CONNECTION_SECOND=mysql2
DB_HOST_SECOND=127.0.0.1
DB_PORT_SECOND=3306
DB_DATABASE_SECOND=ricjac8_orocoin
DB_USERNAME_SECOND=root
DB_PASSWORD_SECOND=

database.php

    'connections' => [

        'sqlite' => [
            'driver' => 'sqlite',
            'url' => env('DATABASE_URL'),
            'database' => env('DB_DATABASE', database_path('database.sqlite')),
            'prefix' => '',
            'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
        ],

        'mysql' => [
            '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', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'prefix_indexes' => true,
            'strict' => true,
            'engine' => null,
            'options' => extension_loaded('pdo_mysql') ? array_filter([
                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
            ]) : [],
        ],

        'mysql2' => [
            'driver'    => 'mysql',
            'host'      => env('DB_HOST_SECOND'),
            'port'      => env('DB_PORT_SECOND'),
            'database'  => env('DB_DATABASE_SECOND'),
            'username'  => env('DB_USERNAME', 'forge'),
            'password'  => env('DB_PASSWORD','forge'),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'prefix_indexes' => true,
            'strict' => true,
            'engine' => null,
            'options' => extension_loaded('pdo_mysql') ? array_filter([
                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
            ]) : [],
        ],

GraphController.php - The one that has select query from my other database

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\User;
use Illuminate\Support\Facades\DB;
use View;
use App\News;
use Charts;
use App\Graph;
use App\Roadmap;
class GraphController extends Controller
{
    /**
    * Display a listing of the resource.
    *
    * @return \Illuminate\Http\Response
    */
    public function index()
    {
        $allroad = Roadmap::all();
        $news = News::all();

        //the second database query
        $graphdetails = Graph::select()->where('id', 1)->get();
        return view('coin.news',compact('news','graphdetails','allroad'));
    }

}

graph.blade.php - the result of the select query being rendered in a chart

//other blade codes i didint include here.


@foreach ($graphdetails as $item)
@endforeach


 chart.legend = new am4charts.Legend();
    chart.data = [{
      "tokens": "Sold Tokens",
      "values": {{$item->total_tokens}} - {{$item->sales_token}}
    },{
      "tokens": "Unsold Tokens",
      "values": {{$item->sales_token}}
    }];
  });

Graph.php model

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Auth;
use Cache;
use Charts;
class Graph extends Model
{
    //
    protected $connection = 'mysql2';
    protected $table = 'ico_stages';
    protected $fillable = [
        'name', 'start_date', 'end_date', 'total_tokens', 'base_price', 'min_purchase', 'max_purchase', 'soft_cap', 'hard_cap',
        'display_mode','private','user_panel_display','sales_token','sales_amount','status',
    ];
}

Answer 1

Try another free shared hosting that uses MySQL. PostreSQL is a little bit different than MySQL.