Set value of input_text by json attribute received from mqtt sensor

Configuration
,
1

What I intend is to fill text_input boxes by an attribute of a json mqtt message.
In config.yaml I set up the mqtt sensor which is basically working as the payload of my message isd shown. Also the text_input seems to be OK as on a state change of my mqtt sensor a fixed value can be set. But all my attempts to get the value of a json key failed.

the received payload is:
{“type”: 55 , “loc”: “Diele”, “sa”: 44 , “family”: “0x60” , “rom”: “0x0011223344556677” }

config.yaml is this:

mqtt:

  sensor:
    - name: "owinet_eeprom"
      state_topic: "owinet/eeprom/sensor/address"
      json_attributes_topic: "owinet/eeprom/sensor/address"
      json_attributes_template: "{{ value_json.value }}" 


input_text:
  text1:
    name: owinet_json_rom
    initial: "nothing"

in automations.yaml:

- alias: eeprom_json_rom
  trigger:
    platform: state
    entity_id: sensor.owinet_eeprom
  action:
    - service: input_text.set_value
      target:
        entity_id: input_text.text1
      data:
#        value: "TEST"  # OK Works
         value_template: "{{ state_attr('sensor.owinet_eeprom','rom')}" # Nothing happens
#        value: "{{ value_json.rom)}"     # Nothing happens

Hence, I’n not sure if the value_template is wrong or the mqtt sensor json settings of the sensor are not OK.

Finally Iwant to achieve an input_text for each of the attributes in my json. Next I want to edit the values and publisch an mqtt message with the modified values back.

Hope someon can help on this.

2

Why do you need an MQTT Sensor for this application?

I suggest using an automation with an MQTT Trigger. When it receives a payload, it iterates through all of the payload’s keys, and stores each key’s value in a corresponding input_text.

A separate automation uses a State Trigger to monitor all of the inout_texts. If the value of any one of the input_texts changes, it publishes the value of all input_texts, as a single payload.

3

Hello Taras,
thank you very much for that hint. Home Assistant is so powerfull that I will probably need years to make use of all the concepts it provides. :slightly_smiling_face:
I had a look into the documentation and got thanks to your reply an imagination how the value_template: “{{ value_json.state }}” works.
My understanding is by now that I need a trigger for each of the keys I would like to see in the according text box. Is this right?

However, thanks a lot for your reply. It turns out to be the solution

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