[Feature Request] A "title" value should be able to allow entities or calulated values

[mmattel]

Raised while using FTC trying to display a dynamic list count value in the title.

When using FTC displaying a list for found IP addresses from NetworkScanner, it would be great to be able to also show the quantity of found items.

When using the markdown card, you can do this:
## Devices: {{ state_attr('sensor.network_scanner','devices') | count }}
and this prints:
Devices 19

But when using the same in FTC:
title: Devices: {{ state_attr('sensor.network_scanner','devices') | count }}
it prints
Devices: {{ state_attr('sensor.network_scanner','devices') | count }}

It could also be that I am doing it wrong. In this case I appreciate a working tip which could be included in the FTC description.

[EdLeckert]

You're not doing anything wrong. Templates are not currently supported anywhere in the flex-table-card. However, I'll take a look at the markdown card and see if this could be added in the future.

[EdLeckert]

You can use the custom config-template-card to accomplish this:

type: custom:config-template-card
entities:
  - sensor.t_mobile_gateway_clients
card:
  type: custom:flex-table-card
  title: ${"T-Mobile Home Internet Clients (" + states['sensor.t_mobile_gateway_clients'].state + ")"}
  action: tmobile_home_internet.get_client_list
  entities:
    include: sensor.t_mobile_gateway
  columns:
    - name: Name
      data: clients.name
    - name: Interface
      data: clients.interface
    - name: Connected
      data: clients.connected
      modify: "x ? 'Yes' : 'No'"

Note that I've used an action to populate the table and an entity to get the count in my case.

(truncated for brevity)

[ildar170975]

I would not suggest to place a flex-table-card into config-template-card.
If the “sensor.xxx” (which fills the table) is NOT declared as “monitored” (in “entities” option), the table will not be updated on the sensor’s change.
If the sensor is declared - then the whole table will be redrawn which may cause flickering.

Suggest to:

1. Either use a markdown card as a title (mimic it by card-mod to a standard title) and use a stack-like card which allows to stack cards seamless.
2. Or use card-mod “after/before” technics to add a dynamically generated title, see examples in community main card-mod thread.