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

8 votes277 views3 answers
Php join
PHP
13 votes263 views6 answers
Php newline
PHP
-1 vote308 views1 answer
My xampp
PHP
17 votes273 views6 answers
Laravel return validation errors
PHP
-1 vote270 views1 answer
Element check cakphp
PHP
0 vote291 views1 answer
Buddypress groups dropdown
PHP
2 votes277 views1 answer
Laravel asset
PHP
0 vote292 views1 answer
Variable superglobale php
PHP
2 votes265 views1 answer
Var_dump not showing all
PHP
1 vote262 views1 answer
Bindparam php
PHP