Question

The following line of code

<% invite.accepted ? { @going, @not_going = 'selected', '' } : { @going, @not_going = '', 'selected' } %>

is my attempt at condensing several operations (evaluating an expression and setting the values of two variables accordingly) into a single line.

It kicks up an error, claiming there’s an unexpected comma.

Is there a way to make this work, or am I just overloading the poor ternary operator?

(This was just a personal experiment, by the way. I don’t mind using a simple — albeit cumbersome — if/else statement)

EDIT: The following line of code works! I’ll check off the proper answer as soon as I can!

<% invite.accepted ? ( @going, @not_going = 'selected', '' ) : ( @going, @not_going = '', 'selected' ) %>

Answer 1

How about:

@going, @not_going = invite.accepted ? ['selected', ''] : ['', 'selected']

w, x = y, z is the same as w, x = [y, z], so this works just fine and there is no repetition.