Laravel 8 - Programmatically run migration and seeder when database has no tables - php

Question

After connecting to database, I want to programmatically run migration and seeder once the project detects that the database doesn't have any tables.
I think what I should do is inject the code below somewhere, but I don't know what file I should edit.
if (!Schema::hasTable('users')) {
$init_met = ini_get('max_execution_time');
set_time_limit(300);
Artisan::call('migrate:fresh');
Artisan::call('db:seed');
set_time_limit($init_met);
}
Or, is there an alternative way to do this instead of injecting the code?
Thanks in advance.

Answer 1

i'd suggest you to look at composer scripts section - there are a lot of events that could be used as trigger for your code. for example post-autoload-dump event fired after composer dumpautoload which is fired in most common calls like install, update or by itself. the benefit of using composer events is that you don't need to check for existing tables on each request.
the most easy way to achieve this is to create custom artisan command
php artisan make:command PrepareEmptyDatabase
then in app\Console\Commands\PrepareEmptyDatabase.php
<?php
namespace App\Console\Commands;
use Exception;
use App\Http\Models\User;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\Artisan;
class PrepareEmptyDatabase extends Command
{
/**
* The name and signature of the console command.
*
* #var string
*/
protected $signature = 'db:prepare-empty';
/**
* The console command description.
*
* #var string
*/
protected $description = 'check for users table and run migrations and seed if has not';
/**
* Execute the console command.
*
* #return int
*/
public function handle()
{
// don't forget to remove this if database user
// don't have access to dba tables
if (Schema::hasTable('users')) {
return Command::SUCCESS;
}
/*
// if your user doesn't have permission to access to dba tables
// you can simply try to do any request to users table
$needActions = false;
try {
User::first();
} catch (Exception $ex) {
$needActions = true;
}
if (!$needActions) {
return Command::SUCCESS;
}
*/
$init_met = ini_get('max_execution_time');
set_time_limit(300);
Artisan::call('migrate:fresh');
Artisan::call('db:seed');
set_time_limit($init_met);
return Command::SUCCESS;
}
}
and the last step is tie this command with composer event, so in composer.json
"scripts": {
"post-autoload-dump": [
"Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
"#php artisan package:discover",
"#php artisan db:prepare-empty"
]
},
now any time you install/update composer dependencies or just run composer dumpatoload application will run your custom command. or you can stick with any of provided in composer docs event on your taste
about running the same code after npm run dev
i'm not quite sure about place to search, guess its about webpack events, but your question tagged with laravel so i assume you're using laravel-mix and there are event hooks
quick googling says that nodejs can run bash scripts using nodejs child process
// webpack.mix.js
const exec = require('child_process')
// or import exec from 'child_process'
mix
.js('resources/assets/js/app.js', 'public/js')
// other configs
.after(() => {
exec.execSync('php artisan db:prepare-empty')
})
pay attention that this code will run on any mix even including npm run prod for example and i don't actually understand why do you need it in frontend build event (if only for testing purpose and even then its questionable)