52 lines
1.1 KiB
Markdown
52 lines
1.1 KiB
Markdown
|
---
|
||
|
|
tags:
|
||
|
|
- Programming_Languages
|
||
|
|
- backend
|
||
|
|
- node-js
|
||
|
|
- express
|
||
|
|
- REST
|
||
|
|
- apis
|
||
|
|
---
|
||
|
|
|
||
|
|
# Creating a REST API with Node and Express: PUT requests
|
||
|
|
|
||
|
|
To demonstrate the handling of PUT requests, we will create a handler that updates an element in the course array, based on its `id` and return the updated entry:
|
||
|
|
|
||
|
|
```js
|
||
|
|
app.put("/api/courses/:id", (req, res) => {
|
||
|
|
const course = courses.find((c) => c.id === parseInt(req.params.id));
|
||
|
|
|
||
|
|
if (!course)
|
||
|
|
return res.status(404).send("A course with the given ID was not found");
|
||
|
|
const { error } = validateCourse(req.body);
|
||
|
|
|
||
|
|
if (error)
|
||
|
|
return error.details.map((joiErr) => res.status(400).send(joiErr.message));
|
||
|
|
|
||
|
|
course.name = req.body.name;
|
||
|
|
res.send(course);
|
||
|
|
});
|
||
|
|
|
||
|
|
```
|
||
|
|
Our request:
|
||
|
|
|
||
|
|
```js
|
||
|
|
const updateCourse = async (courseChange) => {
|
||
|
|
try {
|
||
|
|
const resp = await axios.put("http://localhost:3000/api/courses/1", {
|
||
|
|
name: courseChange.name,
|
||
|
|
});
|
||
|
|
console.log(resp.data);
|
||
|
|
} catch (err) {
|
||
|
|
console.error(err);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
updateCourse({ name: "A new course" });
|
||
|
|
```
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
|
||
|
|
```js
|
||
|
|
{ id: 1, name: { name: 'A new course' } }
|
||
|
|
```
|