Run Script (or Fire Event) when Opening Lovelace View

Configuration Frontend
1

I’m looking to obtain thermostat information automatically when opening a view in Home Assistant Lovelace. The thermostat data is accessible via a script and I’ve setup the script entity with a “RUN” button so I can run the script manually from Lovelace. Now I’d like to run the script automatically when the view opens so I can see the latest thermostat information without having to click the “RUN” button.

I’ve searched wide and far with no success. Any ideas are appreciated.

2

Maybe by triggering on the sensor path attribute using browser mod?

3

Thanks for the suggestion. I managed to get this to work after installing and configuring browser_mod.

automation:
  - alias: "Open Browser"  # get the thermostat data when home assistant "thermostats" view is opened
    mode: single
#    variables:  # can't get these to work
#      browsers:
#        - sensor.roy_mac_safari
#        - sensor.roy_ipad_safari
#        - sensor.roy_iphone_safari
#      view: "/lovelace/thermostats"
    trigger:
      - platform: state  # in home assistant; switched to "thermostats" lovelace view
        # entity_id: "{{ browsers }}"  # can't get this to work
        entity_id:
          - sensor.roy_mac_safari
          - sensor.roy_ipad_safari
          - sensor.roy_iphone_safari
        attribute: path
        to: "/lovelace/thermostats"
      - platform: state  # opened home assistant in "thermostats" lovelace view (uses condition)
        # entity_id: "{{ browsers }}"  # can't get this to work
        entity_id:
          - sensor.roy_mac_safari
          - sensor.roy_ipad_safari
          - sensor.roy_iphone_safari
        to: '1'
    condition:
    - condition: template
      value_template: "{{ trigger.to_state.attributes.path == '/lovelace/thermostats' }}"
    action:
      - alias: "Get Thermostats"
        service: script.turn_on
        target:
          entity_id:
            - script.thermostats_get

One downside is that I need to manage the browser_mod sensors for each browser.

I wasn’t able to get the variables to work which would have reduced the redundant entities.

4

I discovered a better (for me) way to do this using App Events. It will fire an event when the Home Assistant iOS App becomes active. (There is an Android event_type too). This doesn’t fire when opening Home Assistant via a browser.

automation:
  - alias: "HA App Became Active"  # get the thermostat data when home assistant is opened
    mode: single
    trigger:
      - platform: event
        event_type: ios.became_active
    condition:
    action:
      - alias: "Get Thermostats"
        service: script.turn_on
        target:
          entity_id:
            - script.thermostats_get
1 Like
5

Thanks! This works great for iOS, but what Android event type did you refer? There seems to be no android equivalent.

6

Did you find an equivalent?

7

No. There is none. You have to resort to more hacky solutions for android.

I think a simple way might be setting us a REST API in HA and then using a (hidden) image in UI that will call the API via GET method when UI is loaded.