/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 votes427 views1 answer
Custom rule laravel validation
PHP Laravel
0 vote385 views1 answer
How to get all the records with same ID in laravel
PHP Laravel
9 votes405 views3 answers
Pass variable to blade laravel
PHP Laravel
1 vote396 views1 answer
Laravel 8 decimal
PHP Laravel
1 vote342 views2 answers
Time left laravel seconds
PHP Laravel
5 votes397 views3 answers
Delete all rows in table laravel foreign key
PHP Laravel
11 votes326 views5 answers
Resource route laravel
PHP Laravel
0 vote412 views3 answers
Laravel 7 upload file s3
PHP Laravel
16 votes344 views4 answers
Wherenotnull laravel
PHP Laravel
0 vote375 views1 answer
How check the time of operation in laravel
PHP Laravel