# 500 or 400 when updating the content of a post using the API
**URL:** https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825
**Category:** Development
**Tags:** rest-api
**Created:** [24.Апрель.2019 09:30:24 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825 "2019-04-24T09:30:24Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@jviotti](https://meta.discourse.org/u/jviotti)
#### Post date: [24.Апрель.2019 09:30:24 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/1 "2019-04-24T09:30:24Z")
I’m trying to update the content of a post using the API. The docs at [Discourse API Docs](https://docs.discourse.org/#tag/Posts%2Fpaths%2F~1posts~1%7Bid%7D.json%2Fput) mention that I should use `PUT /posts/:id.json` sending `post[raw]` as a body.
This results in 400 along with:
```plaintext
errors: ['param is missing or the value is empty: post']
```
The error is complaining about a param called `post`, but replacing `post[raw]` with `post` in my HTTP request results in a 500 Internal Server Error response.
The post content was just `Edited comment`, so I don’t think it’s anything related to the content.
Am I missing something? Are the API docs out of date?
I’m running a cloud instance at [https://forums.balena.io](https://forums.balena.io). Not sure what the Discourse version is.
---
### Author:  [@jviotti](https://meta.discourse.org/u/jviotti)
#### Post date: [24.Апрель.2019 09:50:27 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/2 "2019-04-24T09:50:27Z")
I just realised I was passing a topic id instead of a post id to the API, but the problem still persists. I’m trying to update post 34816, assuming you have access to the cloud instance:
```plaintext
PUT https://forums.balena.io/posts/34816.json
```
With body:
```plaintext
{
"post": "Edited comment"
}
```
And that still results in 500.
---
### Author:  [@jviotti](https://meta.discourse.org/u/jviotti)
#### Post date: [24.Апрель.2019 09:52:30 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/3 "2019-04-24T09:52:30Z")
Why is my post being flagged as spam? Is this not the right place to submit bugs?
---
### Author:  [@jviotti](https://meta.discourse.org/u/jviotti)
#### Post date: [24.Апрель.2019 09:56:24 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/4 "2019-04-24T09:56:24Z")
Turns out it works fine if I pass `raw` instead of `post` in the request body. The docs could probably be clearer about that 🙂
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [24.Апрель.2019 12:14:51 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/5 "2019-04-24T12:14:51Z")
Glad you got it figured out! I’ve got a bunch of topics that are me taking to myself.
Mostly these are the docs, and they are continually updated: [Reverse engineer the Discourse API](https://meta.discourse.org/t/how-to-reverse-engineer-the-discourse-api/20576) 😉
I generally forget that there are any docs besides just seeing how it works in the browser development tools.
---
### Author:  [@JammyDodger](https://meta.discourse.org/u/JammyDodger)
#### Post date: [01.Август.2022 04:37:48 UTC](https://meta.discourse.org/t/500-or-400-when-updating-the-content-of-a-post-using-the-api/115825/7 "2022-08-01T04:37:48Z")