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

let's say you have two tables student and section , you can refer the following two table structure for adding foreign key and making onDelete('cascade') .

Table -1 :

public function up()
{
    Schema::create('student', function (Blueprint $table) {
        $table->id();
        $table->string('name');
        $table->string('address');
        $table->string('phone');
        $table->string('about')->nullable();
        $table->timestamps();
    });
}

Table - 2:

public function up()
{
    Schema::create('section', function (Blueprint $table) {
        $table->id();
        $table->bigInteger('student_id')->unsigned()->index()->nullable();
        $table->foreign('student_id')->references('id')->on('student')->onDelete('cascade');
        $table->string('section')->nullable();
        $table->string('stream')->nulable();
        $table->timestamps();
    });
}

hope it will help you -:) you can read the full article from here .