How to add line break in post body via API?

[brazzerstop@community.nodebb.org]

Hello!

I was create post request via API v3 to create a post (docs)

This is works, but I can’t add a new line in content, this value not work \n . I’m use this format in header content-type application/json and this data for post body

"content": "user: [test](https://community.nodebb.org/user/test) \n\n mail: test@test.com"

I get this text in post: user: [test](https://community.nodebb.org/user/test) \n\n mail: test@test.com, the \n\n itn’t convert to 2 line break.

[baris@community.nodebb.org]

Did you compare it with the request that is sent by the browser when you add new lines?

Maybe there is something different.

[baris@community.nodebb.org]

When I copy the above posts request from my dev tools it shows the below so maybe try escaping the \n\n like \\n\\n

fetch("https://community.nodebb.org/api/v3/topics/17371", {
  "headers": {
   ...
  },
  "body": "{\"tid\":17371,\"content\":\"Did you compare it with the request that is sent by the browser when you add new lines?\\n\\nMaybe there is something different.\"}",
  "method": "POST"
});

[phenomlab@community.nodebb.org]

brazzerstop if it’s any consolation, I get the same issue with similar code I developed that creates posts using the API.

I couldn’t get new lines working no matter what I tried.

[brazzerstop@community.nodebb.org]

baris I’m try create post via browser console, but get 403 error (with \"tid\":39, and without \"tid\":39 in body)

Result:

[baris@community.nodebb.org]

What do you see when you log data.content here? Compare it to a regular post made with the composer. Did you try to make the post with api.post('/topics/123', {tid: tid, content: '....'}); and see if that works?

[brazzerstop@community.nodebb.org]

baris when I try this:

fetch("https://example.com/api/v3/topics/39", {
  "headers": {
   "Authorization": "Bearer 123",
  },
  "body": "{\"content\":\"Did you compare it with the request that is sent by the browser when you add new lines?\\n\\nMaybe there is something different.\"}",
  "method": "POST"
});

I have this error in admin/advanced/logs:

2023-07-02T12:48:39.085Z [4567/641] - error: POST /api/v3/topics/39
invalid csrf token

Result via api.post (without error in admin/advanced/logs)

For the test \n\n, I’m try app.newReply and composer understand line break, but this is not post api.

[baris@community.nodebb.org]

Well the composer uses the api it makes a POST request to the /topics/:tid end point. https://github.com/NodeBB/nodebb-plugin-composer-default/blob/master/static/lib/composer.js#L757

You can add the csrf token into the headers['x-csrf-token'] or body.csrf_token in the POST request.

To use the api module just require it like below

const api = await app.require('api');
api.post(...);

[brazzerstop@community.nodebb.org]

baris

Ok, now this method successfully convert \n\n to line break, but how I can get this result via json api request?

[baris@community.nodebb.org]

Not sure, maybe take a look at the data sent by that tool you are using and see if it matches the network request for api.post

[brazzerstop@community.nodebb.org]

baris

application/json and charset=utf-8 in content type was fix this