Laravel 8 foreign key

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();
});

Foreign key in laravel migration

$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 before migration

Schema::table('users', function ($table) {
    $table->string('email')->after('id')->nullable();
});

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

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

Source: laravel.com

Similar codes

0 vote117 views2 answers
How to structure database in laravel
PHP Laravel
48 votes211 views6 answers
Create migration with model laravel
PHP Laravel
0 vote155 views1 answer
Laravel polymorphic relationship why we need this relation orm,
PHP Laravel
2 votes174 views2 answers
Increase memory laravel controller
PHP Laravel
0 vote156 views2 answers
Show query in laravel
PHP Laravel
8 votes120 views1 answer
Last query in laravel
PHP Laravel
0 vote298 views1 answer
Create model for existing table in laravel
PHP Laravel
1 vote191 views1 answer
The token has been blacklisted laravel jwt
PHP Laravel
1 vote152 views3 answers
Check table exists in db laravel
PHP Laravel
1 vote159 views1 answer
Array_last in laravel 8
PHP Laravel