Change of Text by MQTT without HA?

[RaW79]

Hi
I´m not using HomaAssitant so I´m reliant to send everything coming from outside by mqtt to the display which should be presented or updated.

From the example for Dash UI the soltution is given for an arc and a button.

For a button it´s:

hasp/plate35/command/p1b4.text %value%

But I do not realy like the button behaviour on a touch display for text. So I would like to use object type e.g. label for simple data presentation.

So e.g. for this Power Value:

{"id":15,"obj":"label","x":40,"y":370,"w":90,"h":90,"text":"1000W","text_font":32,"text_color":"#FFFFFF"}

May I kindly ask if this text "1000W" is changable by external mqtt publish? Can you inform how to publish to do?

Thank you very much!

[hb020]

Easy. Same as what you did with the button.

Python code here:

    def sendProp(plate_name: str, el: str, prop: str, txt: str):
        """Send a property

        Args:
            plate_name (str): plate name
            el (str): element on screen (pXbY)
            prop (str): the property
            txt (str): text to send
        """
        if txt is None:
            txt = "[]"
        topic = f"hasp/{plate_name}/command/{el}.{prop}"
        mi = mqttc.publish(topic, txt)
        mi.wait_for_publish()  # this does not seem to block until all is gone!


    def sendTxt(plate_name: str, el: str, txt: str):
        """ send text to a label
        
        Args:
            plate_name (str): plate name
            el (str): element on screen (pXbY)
            txt (str): text to send
        """
        if txt is None:
            txt = "??"
        topic = f"hasp/{plate_name}/command/{el}.text"
        mi = mqttc.publish(topic, txt)
        mi.wait_for_publish()  # this does not seem to block until all is gone!

[fvanroie]

You can similarly use hasp/plate35/command/p1b15.text with payload 500W

Or if you want to change multiple attributes at once: use hasp/plate35/command/jsonl with payload:
{"page":1,"id":15,"text":"1125W",text_color":"#FF0000"}

[RaW79]

Thanks, great also to have the option to change multiple attributes.