Template Trigger issue

1

Question for all you clever templating people, what is wrong with the following:

{% if (is_state('binary_sensor.1', 'off')) or 
(is_state('binary_sensor.2', 'off')) or 
(is_state('binary_sensor.3', 'off')) and
(is_state('binary_sensor.4', 'on')) %}
true {% else %} false {% endif %}

All the above binary sensors are showing the state of off, however the above renders as true?
I am convinced its the mixing of OR & AND as if I remove the and it always renders correctly.

So what am I doing wrong here?

TIA

2

As it is written, that is the correct output, this follows the operator precedence rules

Since and binds first/strongest compared to or, your template (with all sensors ‘off’) boils down to:

TRUE or TRUE or TRUE and FALSE ->
TRUE or TRUE or FALSE ->
TRUE or FALSE ->
TRUE

If you need to change the order they are processed in, use parentheses to have all the or's processed first:

{{ ( is_state('binary_sensor.1', 'off') or 
is_state('binary_sensor.2', 'off') or 
is_state('binary_sensor.3', 'off') ) and
is_state('binary_sensor.4', 'on') }}

In your example case this would evaluate as follows:

(TRUE or TRUE or TRUE) and FALSE ->
(TRUE or TRUE) and FALSE ->
TRUE and FALSE ->
FALSE

EDIT: It isn’t necessary, in this case, to structure it as an if statement.

1 Like
3

Perfect, thank you not only for the answer but the explanation as well. I would mark your post and the answer but dont seem to have the option as is often the case!