Laravel 8 foreign key migration

Laravel foreign key

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});
OR
Schema::table('posts', function (Blueprint $table) {
    $table->foreignId('user_id')->constrained();
});

Make a forign key in migrations using laravel 8

$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

Foreign key laravel migration

$table->foreign('column_name')->references('id')->on('table_name')->onDelete('cascade');

Laravel migration rollback

To rollback one step:

php artisan migrate:rollback

To rollback multiple steps:

php artisan migrate:rollback --step=[x]
  
To drop all tables and reload all migrations:

php artisan migrate:fresh

Create foreign key laravel migration

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});

Laravel 8 foreign key migration

use Illuminate\Database\Schema\Blueprint;use Illuminate\Support\Facades\Schema;Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});

Source: laravel.com

Similar codes

0 vote209 views2 answers
"message": "Call to a member function canNot() on null", "exception": "Symfony\\Component\\Debug\\Exception\\FatalThrowableError",
PHP
0 vote204 views1 answer
Error report php
PHP
1 vote227 views1 answer
Laravel long description text string
PHP
2 votes259 views1 answer
Undefined type 'App\Http\Controllers\api\DB'.
PHP
0 vote202 views1 answer
Supprimer un cookie avec un input en php
PHP
0 vote213 views1 answer
Data type for price in laravel
PHP
26 votes226 views6 answers
Laravel validation integer
PHP Laravel
0 vote234 views1 answer
Custom timestamp column laravel
PHP
3 votes226 views2 answers
Array push foreach php
PHP
12 votes230 views6 answers
Run seeder in migration laravel
PHP Laravel