Relational and logical operators

Template Engine uses the equality operator (==) to determine the relationship between variables, and logical operators (and, or, not) for boolean conditions.

Relational condition

#set($first = "foo") #set($last = "bar") #if($first == $last) First and Last are equal. #else First and Last are not equal. #end

The output in this example is First and Last are not equal.

Logical AND condition

#if( $foo && $bar ) <b> This AND that</b> #end

The #if directive will only evaluate to true if both $foo and $bar are true.

Logical OR condition

#if( $foo || $bar ) <b> This OR that</b> #end

The #if directive will evaluate to true if any of the variables $foo or $bar is true.

Logical NOT condition

#if( !$bar ) <b> NOT this</b> #end

The #if directive will only evaluate to true if $bar is false.