Schema::create('campaign', function (Blueprint $table) {
            $table->engine='InnoDB';
            $table->increments('id');
            $table->integer('users_id')->unsigned();
            $table->foreign('users_id')->references('id')->on('users')->onDelete('cascade')->onUpdate('cascade');
            $table->string('campaign_name');
            $table->float('campaign_goal',8,2);
            $table->string('discription',400);
            $table->string('image');
            $table->string('category');
            $table->date('start_date');
            $table->date('end_date');
            $table->float('total_fund',8,2);
});

Schema::create('campaign_product', function (Blueprint $table) {
            $table->engine='InnoDB';

            $table->increments('id');
            $table->integer('campaign_id')->unsigned();
            $table->foreign('campaign_id')->references('id')->on('campaign')->onDelete('cascade')->onUpdate('cascade');

            $table->integer('product_id')->unsigned();
            $table->foreign('product_id')->references('id')->on('product')->onDelete('cascade')->onUpdate('cascade');
        });