Question on web scraper, cannot find value

Configuration
1

Hi,
I am now already failing for hours to get this html-code scraped to just show the value of the water level.

This is the original website
https://www.steb-koeln.de/

And this is the related html-code:

<div class="upper">
				<strong id="water-level">2,59 m</strong>
				<span>Kölner Pegel</span>
				<time datetime="">6.9.2021 20:15</time>
			</div>

This is what I got so far:

  - platform: scrape
    resource: https://www.steb-koeln.de
    name: "water-level"
    select: ".water-level"
    unit_of_measurement: "m"
    scan_interval: 300

I just don’t know, How I can just retrieve the value for “water-level”, which is 2,59m in this example.

Hope that anybody can help.

Sorry. This is all new to me and very complicated.
Thanks. in advance.

Best regards.

Till

2

That’s how it may look like, but the raw HTML code does not contain the actual value and looks like this instead:

<div class="upper">
  <strong id="water-level"><img src="/Intern/resources/img/Ajax-Loader.gif" alt="loader" /></strong>
  <span>Kölner Pegel</span>
  <time datetime="">&nbsp;</time>
</div>

However, the good news is that the actual data you are looking for is available in JSON format under this URL: https://www.pegelonline.wsv.de/webservices/rest-api/v2/stations/KÖLN/W/currentmeasurement.json

You can use a rest sensor to fetch and extract the value. Try this:

sensor:
  - platform: rest
    resource: https://www.pegelonline.wsv.de/webservices/rest-api/v2/stations/K%C3%96LN/W/currentmeasurement.json
    value_template: "{{ value_json.value / 100 | float }}"
    name: "water-level"
    unit_of_measurement: "m"
3

That was it. Thanks. Danke. Worked out. Hat geklappt :slight_smile:

1 Like
4

What if we make an integration for this :thinking: