使用 Repositories

现在让我们重构之前的代码，并使用Repository而不是EntityManager。每个实体都有自己的存储库，可以处理其实体的所有操作。当你经常处理实体时，Repositories 比 EntityManagers 更方便使用：

import { createConnection } from "typeorm";
import { Photo } from "./entity/Photo";
createConnection(/*...*/)
  .then(async connection => {
    let photo = new Photo();
    photo.name = "Me and Bears";
    photo.description = "I am near polar bears";
    photo.filename = "photo-with-bears.jpg";
    photo.views = 1;
    photo.isPublished = true;
    let photoRepository = connection.getRepository(Photo);
    await photoRepository.save(photo);
    console.log("Photo has been saved");
    let savedPhotos = await photoRepository.find();
    console.log("All photos from the db: ", savedPhotos);
  })
  .catch(error => console.log(error));

了解更多有关 Repository 的信息。