I can't believe something this essential and easy was so hard to figure out with Angular. Googling like crazy I eventually came across this solution.
If you need to add a conditional statement if else inside the ng-click core directive, use the following structure:
ng-click="variable = (condition=='X' ? 'Y' : 'X')"
Basically I wanted to assign a value to a variable on the ngClick event. It's fairly simple to use ternary operators to output strings or classes, it wasn't so obvious to assign variables.
Move logic to Controller / Directive
I hear you, all logic should be in a controller or directive. The view is not the place to be, I agree. However, sometimes you might need this 😉