Web server rest api, multiple POSTs

ESPHome
1

Hi,
I’m running esphome web server and separate esp32 client (not esphome) which updates Number components value through Rest api calls. So from client I make POST request like: ip/number/number_id/set?value=25 and it’s working fine. But I need to update five Number components and I can’t figure out how to do it. Can I do it somehow in one POST or can I do several POSTs within one http session?

2

You will need to do several POSTs - the sensor ID is part of the URL using this method, thus you can only provide the one.

3

Thank’s, I was expecting so, since I didn’t find anything from documentation… What about multiple posts in one session?
Something like:
http.begin
POST1
POST2
POST3
…
http.end

Or do I really need new session for every post?

4

The documentation doesn’t actually say you need a new session - all I can recommend is that you try it and see the result.

5

Thank’s. but how should I formulate it? I mean, since Id is part of the url which I normally insert in http.begin(url)

6

That’s not really an ESPHome question - I haven’t coded a http client for Arduino for a while and a lot of the users on this forum would never have done so.

I will try and find time to have a look at some old code but maybe one of the other forum users can assist.

7

I agree. I was hoping to find generic component with multiple parameters, something like Light component which has plenty of parameters… but all of them are limited to tight predictions. Thank you anyway!

8

Alternatively you can just copy the web server component as a local “external component” and modify it yourself to work as you want. Of course you need to be able to do a bit if C++ but what you ask is doable but will need a mod to handle setting variables via POST instead of the GET url. I might add it to my own version of it. for example the url would need to be:
/<domain>/<cmd> where domain and cmd can be /number/set
and your post would contain the POST data as json
{{id:<device_id>,cmd:<set/clear/xxx>,value:<123456>},{id:<device_id2>,xxxx}}
I suggest json as you can set multiple id’s and arbitratry data much easier then using urlencoded values at the cost of a bit of extra manipulation.

9

Hi, that’s what I was expecting to find in Rest Api to start with… But generic number doesn’t have variables, Light component have several but they are limited from 0 to 255. And I needed from -250 to 4500. To modify web server is beyond my skills.