laravel中的整数可空列

Question

Is it possible to have integer column nullabale in laravel?

I have table image where i store multiple image and get id of my posts products website_banner and I need them to be nullable. For example if I upload multiple image for my product not get error of my posts column have not default value!

my migrations:

Schema::create('images', function (Blueprint $table) {
            $table->increments('id');
            $table->string('image');
            $table->integer('post_id')->unsigned();
            $table->integer('product_id')->unsigned();
            $table->integer('banner_id')->unsigned();
            $table->timestamps();
        });

Schema::table('images', function($table) {
            $table->foreign('post_id')->references('id')->on('posts');
            $table->foreign('product_id')->references('id')->on('products');
            $table->foreign('banner_id')->references('id')->on('banners');
        });

Answer 1

$表 - >整数（ 'banner_id'） - >可为空的（） - >无符号（）;

Answer 2

是的，只需将->nullable()到您的行：

$table->integer('website_banner')->unsigned()->nullable();

Answer 3

你必须使用可空的

$table->integer('column_name')->nullable()->unsigned();