increments('id'); $table->integer('user_id')->unsigned(); $table->integer('sender_id')->unsigned()->nullable(); $table->string('type', 100); $table->string('subject_type', 200)->nullable(); $table->integer('subject_id')->unsigned()->nullable(); $table->binary('data')->nullable(); $table->dateTime('time'); $table->boolean('is_read')->default(0); $table->boolean('is_deleted')->default(0); } );