The difference between nodejs put and patch

With the development of the Internet and the rise of websites, front-end development and back-end development are increasingly integrated. Node.js is a powerful back-end development language and framework, and its API has also continued to grow and develop. Among them, the HTTP request protocol is an integral part of the Node.js API. In development, PUT and PATCH are often used as two request methods. This article will introduce in detail the differences between these two request methods.

PUT request

A PUT request is to update (or replace) a known resource. Normally, a PUT request will set all properties (fields) of the resource; if some fields are not set, they may be considered null. When using a PUT request to update a known resource, all data in the request body will be replaced with the original data, so usually, a PUT request will update all field values ​​instead of updating as needed.

For example: We have a user account management system, in which the attributes of an account include user name, password and email. We can update the attributes of this account through a PUT request. If you use PUT to update, you need to pass the three attributes of user name, password and email to the backend. After the update, the original data will be replaced. If one of the properties is not updated, the backend will update the value of the property to null.

In terms of code implementation, the PUT request is implemented in Node.js as follows:

app.put('/user/:id', (req, res) => {
  const userId = req.params.id;
  const userData = req.body; // 获取请求体中的数据
  //执行更新操作
  //...
});

PATCH request

PATCH request is to update some known resources. Compared with PUT requests, PATCH requests will only update the attributes provided in the request body. For attributes not provided in the request body, the original value of the resource will not be affected.

For example: If we need to update the password in the above account system, we can use PATCH request. In the PATCH request, we only need to send the JSON format data containing the password update to the backend, without updating all fields. After the update, the values ​​of other fields will remain unchanged.

In terms of code implementation, the PATCH request is implemented in Node.js as follows:

app.patch('/user/:id', (req, res) => {
  const userId = req.params.id;
  const userData = req.body; // 获取请求体中的数据
  //将请求体中的数据更新到数据库
  //...
});

The difference between PUT and PATCH

PUT and PATCH are both request methods. Used to update existing resources, but their differences are mainly reflected in the following aspects:

1. The data update methods are different:

PUT request will change the request body All data in replaces the original data. Normally, a PUT request will update all field values ​​instead of updating as needed. The PATCH request will only update the attributes provided in the request body to the original resource.

2. For attributes not provided in the request body, the data processing method is different:

PUT request will update the attributes not provided in the request body to null; while PATCH request will not be affected, the original value will not change.

3. For the performance of front-end applications, PUT requests are faster:

PUT requests query whether the transmitted data is completely consistent with the background data information at the time of request, and if so Once the server determines that the same data is the same, it will return directly (reducing one data information interaction), so this will make the request bandwidth small and fast.

In summary, PUT and PATCH requests are both used to update known resources, but they are different in the update method, data processing method and performance not provided in the request body. In actual applications, developers need to choose different request methods according to different needs.

The above is the detailed content of The difference between nodejs put and patch. For more information, please follow other related articles on the PHP Chinese website!