/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

0 vote217 views1 answer
Laravel - access file from storage path - alternative to symlink
PHP Laravel
0 vote213 views1 answer
Laravel api error return homepage
PHP Laravel
2 votes191 views2 answers
Laravel dump
PHP Laravel
0 vote230 views1 answer
Can we use 2 select in a query laravel
PHP Laravel
4 votes210 views2 answers
How to rename a table element in laravel
PHP Laravel
-1 vote170 views2 answers
Laravel 5.6 orderby
PHP Laravel
0 vote208 views1 answer
Redirect back in laravel livewire
PHP Laravel
5 votes230 views2 answers
Created_at default value laravel
PHP Laravel
0 vote230 views1 answer
Laravel seeding with relationships
PHP Laravel
0 vote298 views1 answer
Laravel Mix npm run production error
PHP Laravel