/PHP/Laravel/Laravel foreign key constraint

Laravel foreign key constraint

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');

Create foreign key laravel migration

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

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

Laravel foreign key constraint

public function up()
{
    Schema::create('replies', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->text('body');
        $table->unsignedBigInteger('question_id');
        $table->integer('user_id')->unsigned();
        $table->foreign('question_id')->references('id')->on('questions')->onDelete('cascade');
        $table->timestamps();
    });
}

Source: stackoverflow.com

Laravel 8 foreign key

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

Source: laravel.com

Similar codes

2 votes377 views2 answers
Laravel collection slice
PHP Laravel
0 vote368 views2 answers
Laravel get namespace
PHP Laravel
0 vote417 views1 answer
Laravel telescope tutorial
PHP Laravel
0 vote371 views1 answer
Remove controller cache laravel
PHP Laravel
6 votes374 views5 answers
Laravel collection map
PHP Laravel
3 votes554 views6 answers
Jwt laravel
PHP Laravel
2 votes417 views2 answers
Laravel forcefill
PHP Laravel
1 vote419 views1 answer
Clear cache using laravel controller
PHP Laravel
0 vote405 views1 answer
Appserviceprovider laravel auth user
PHP Laravel
5 votes383 views5 answers
Laravel composer update
PHP Laravel