ifequal
Show something if two values are equal.
The {% ifequal %}
tag tests if its two arguments are equal. If so then the contents of the {% ifequal %}
block are output, otherwise the contents of the optional {% else %}
tag are output.
For example:
{% ifequal value 5 %}
Value is equal to 5.
{% else %}
Value is {{ value }} which is not 5.
{% endifequal %}
It is only possible to compare arguments that are variables (with optional filters) or constants. Examples of constants are numbers, strings or lists.