How do I loop through an array for a particular value in CoffeeScript

Question

I am trying to loop through an array with CoffeeScript to pull out the full_name value as shown below. I've been all over Stack overflow and CoffeeScript's docs the last few days and can't figure it out. This is what I currently have. Can you tell me what I'm doing wrong?

Angular JS

<disabled-display template="{{ctrl.getTechnicianNames()}}">

CoffeeScript

ctrl.getTechnicianNames = (full_name) ->
    array_of_persons = ctrl.technicians
    ctrl.getTechnicianNames full_name for full_name in array_of_persons

ctrl.technicians

{email: "[email protected]", first_name: "John", full_name: "John Johnson",
last_name: "Johnson"}, 
{email: "[email protected]", first_name: "Frank", full_name: "Frank Franklin",
last_name: "Franklin"}

zor-el · Accepted Answer · 2019-10-28 17:44:46Z

2

There is a much more coffeescripty way:

ctrl.technitianNames = -> (t.full_name for t in @technicians)

Note the avoidance of the get prefix. It is considered a code smell in (to my knowledge most) languages other than Java and C++.

edited Oct 28, 2019 at 17:44

answered Oct 27, 2019 at 21:26

zor-el

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2 Comments

zor-el Over a year ago

Note I dropped the get prefix b/c to my best knowledge it tends to be a code smell in languages other than Java and C++.

J. M. Habibi Over a year ago

Yes! I assumed this was part of your decision. I ended up using show instead of get, but that could also be a code smell!

Geoffrey Booth · Accepted Answer · 2019-10-27 06:04:50Z

1

ctrl.getTechnicianNames = ->
    ctrl.technicians.map((technician) => technician.full_name)

Nothing specific to CoffeeScript about it, you just want Array.prototype.map: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map

answered Oct 27, 2019 at 6:04

Geoffrey Booth

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