/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

1 vote112 views1 answer
Laravel latest
PHP Laravel
10 votes139 views6 answers
Laravel blade date format
PHP Laravel
0 vote135 views1 answer
Laravel controller and model create same file name
PHP Laravel
0 vote135 views1 answer
Laravel Dropzone Attachment Required is not working as expected
PHP Laravel
3 votes142 views6 answers
Last insert id in laravel
PHP Laravel
-2 votes155 views1 answer
Errno: 150 foreign key constraint is incorrectly formed laravel 8
PHP Laravel
4 votes124 views4 answers
Search in laravel 8
PHP Laravel
3 votes126 views2 answers
Laravel image max size validation
PHP Laravel
0 vote134 views1 answer
Laravel collection max
PHP Laravel
0 vote87 views1 answer
Laravel sanctum Protecting routes
PHP Laravel