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 foreign key

$table->foreignId('user_id')
      ->constrained()
      ->onUpdate('cascade')
      ->onDelete('cascade');

Source: laravel.com

Similar codes

44 votes271 views6 answers
How to create controller in laravel
PHP
1 vote344 views1 answer
How to use plugin shortcode in wordpress template
PHP Wordpress
0 vote231 views1 answer
Php array all keys empty
PHP
1 vote278 views1 answer
Change background color php
PHP
0 vote273 views2 answers
Only Show Specific Countries In Caldera Forms Phone Field
PHP
3 votes248 views2 answers
Class 'App\Http\Controllers\Validator' not found in lumen
PHP
0 vote290 views1 answer
Publish Spatie Laravel Permission
PHP Laravel
0 vote271 views1 answer
Get name of join by id php
PHP
2 votes297 views2 answers
Laravel 8 websockets
PHP Laravel
35 votes254 views6 answers
Php format date
PHP