laravel migration best way to add foreign key

Question

Simple question: I\'m new to Laravel. I have this migration file:

Schema::create(\'lists\', function(Blueprint $table) {
    $table->increments(\'id\'); 
         


        

Answer 1

I was doing the same but got error " id not exist" => so I changed my migration file as below :

question table migration content:

$table->id() => should change to $table->increments('id')

definitions of foreign key in Reply table:

$table->foreign('question_id')->references('id')->on('questions')->onDelete('cascade');

now your foreign key will work.