动态更新API

Question

小问题是，如何使这个API只从请求中获取定义json键，而不使用if statement检查请求中的每个键，如下所示：

const updateArticle = async (req, res) => {
  const { title, description, body } = req.body;
  try {
    const article = await Article.findByPk(req.params.id);

    if (title) article.title = title;
    if (description) article.description = description;
    if (body) article.body = body;

    await article.save();

    res.json("Article updated.");
  } catch (err) {
    console.log(err);
  }
};

Answer 1

可以使用Object.assign()方法将源对象的属性覆盖到目标对象。

const updateArticle = async (req, res) => {
  const { title, description, body } = req.body;
  try {
    const article = await Article.findByPk(req.params.id);

    Object.assign(article, req.body);

    await article.save();

    res.json("Article updated.");
  } catch (err) {
    console.log(err);
  }
};