49 lines
1,023 B
Markdown
49 lines
1,023 B
Markdown
---
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tags: [backend, node-js, REST, APIs]
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---
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# Creating a RESTful API: `PUT` requests
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To demonstrate the handling of PUT requests, we will create a handler that
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updates an element in the course array, based on its `id` and return the updated
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entry:
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```js
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router.put("/:id", (req, res) => {
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const course = courses.find((c) => c.id === parseInt(req.params.id));
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if (!course)
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return res.status(404).send("A course with the given ID was not found");
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const { error } = validateCourse(req.body);
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if (error)
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return error.details.map((joiErr) => res.status(400).send(joiErr.message));
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course.name = req.body.name;
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res.send(course);
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});
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```
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Our request:
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```js
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const updateCourse = async (courseChange) => {
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try {
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const resp = await axios.put("http://localhost:3000/api/courses/1", {
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name: courseChange.name,
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});
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console.log(resp.data);
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} catch (err) {
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console.error(err);
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}
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};
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updateCourse({ name: "A new course" });
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```
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Returns:
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```js
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{ id: 1, name: 'A new course' }
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```
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