mirror of
https://github.com/openhab/openhab-addons.git
synced 2025-01-11 15:42:10 +01:00
38 lines
1.1 KiB
Markdown
38 lines
1.1 KiB
Markdown
|
# Jinja Transformation Service
|
||
|
|
|
||
|
|
Transforms a value using a jinja template.
|
||
|
|
|
||
|
|
The main purpose of this transformer is the use in the home assistant discovery. Therfore not all features of the home assistant templating are supported.
|
||
|
|
Basically on [Processing incoming data](https://www.home-assistant.io/docs/configuration/templating/#processing-incoming-data)
|
||
|
|
|
||
|
|
## Available variables
|
||
|
|
|
||
|
|
| Variable | Description |
|
||
|
|
|------------|------------------------------------|
|
||
|
|
| value | The incoming value. |
|
||
|
|
| value_json | The incoming value parsed as JSON. |
|
||
|
|
|
||
|
|
## Examples
|
||
|
|
|
||
|
|
### Basic Example
|
||
|
|
|
||
|
|
Given the value
|
||
|
|
|
||
|
|
```
|
||
|
|
{"Time":"2019-01-05T22:45:12","AM2301":{"Temperature":4.7,"Humidity":93.7},"TempUnit":"C"}
|
||
|
|
```
|
||
|
|
|
||
|
|
the template
|
||
|
|
|
||
|
|
::: v-pre
|
||
|
|
`{{value_json['AM2301'].Temperature}}`
|
||
|
|
:::
|
||
|
|
|
||
|
|
extracts the string `4.7`.
|
||
|
|
|
||
|
|
## Further Reading
|
||
|
|
|
||
|
|
* Wikipedia on [Jinja](https://en.wikipedia.org/wiki/Jinja_(template_engine).
|
||
|
|
* Home assistant [discovery](https://www.home-assistant.io/docs/mqtt/discovery/).
|
||
|
|
* Home assistant [templating](https://www.home-assistant.io/docs/configuration/templating/).
|