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

25 votes195 views6 answers
Redirect php
PHP
2 votes221 views1 answer
How to use model method in controller in laravel
PHP Laravel
4 votes201 views2 answers
Check request header laravel
PHP
0 vote322 views1 answer
How to use “find_in_set” in cakephp 3 find method
PHP CakePHP
5 votes219 views1 answer
Isarray php
PHP
2 votes192 views3 answers
Laravel web php request to redirect to another page
PHP
0 vote216 views1 answer
Laravel collection splice
PHP Laravel
0 vote226 views1 answer
Php/Laravel check if date is passed
PHP Laravel
0 vote424 views1 answer
Wordpress plugin public page
PHP
0 vote188 views1 answer
Woocommerce product hooks
PHP