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  Rails REST
  
  CRUD(L) -- Create Read Update Delete (List)

  List   -- GET    /widgets
  Create -- POST   /widgets
  Read   -- GET    /widgets/:id
  Update -- PUT    /widgets/:id
  Update -- PATCH  /widgets/:id

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-- according to the following type annotation the `add` function...
--
-- * takes an `Int`
-- * takes another `Int`
-- * and returns an `Int`
--
-- elm will automatically curry for fewer arguments though,
-- so that also means that this function will...
--
-- * take an `Int`

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I'm defining a function on Question model called user, which gets the User record tied to it.

Do you think multiple calls to a DB in the view/template is too much?

So there's the "best practices" answer, and then what I imagine is the actual answer to your question here.

The Actual Answer

So let's assume we have a Question model:

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new Git project

dev $ mkdir proj && cd proj

proj $ git init
Initialized empty Git repository in /home/bosco/dev/proj/.git/

create and commit a file

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def split_on(split_string, string_to_split_on = nil)
  splitter = Proc.new {|string_to_split_on|
    string_to_split_on.split split_string
  }

  if string_to_split_on
    splitter.call string_to_split_on
  else
    splitter
  end

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class User < AR::Base
  has_many :questions
end

class Question < AR::Base
end

module Service::UserShow
  UserShowExhibit = Struct.new :user, :user_questions

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allowed_permissions = MapSet.new([:owner, :manager])    # => #MapSet<[:manager, :owner]>
user_permissions    = MapSet.new([:associate, :member]) # => #MapSet<[:associate, :member]>
MapSet.disjoint? user_permissions, allowed_permissions
# => true

allowed_permissions = MapSet.new([:owner, :manager])  # => #MapSet<[:manager, :owner]>
user_permissions    = MapSet.new([:manager, :member]) # => #MapSet<[:manager, :member]>
MapSet.disjoint? user_permissions, allowed_permissions
# => false

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defmodule RPi.GPIO.RelayController do
  use GenServer

  ### CLIENT API ###

  def start_link do
    GenServer.start_link __MODULE__, :init_args, []
  end

  def on( pid, relay_num), do: GenServer.cast(pid, {:on,  relay_num})

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defmodule Web do
  # $ elixir -v
  # Erlang/OTP 19 [erts-8.1] [source] [64-bit] [smp:4:4] [async-threads:10] [kernel-poll:false]
  #
  # Elixir 1.3.4

  # MATCH CASES
  # *** &Web.cond_and_regex_match/1 ***
  # 1.6 sec     2M iterations   0.78 μs/op
  #

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_ = require 'underscore'

categorizeSides = (sides) ->
  throw "not a triangle" unless sides.length == 3
  switch _(sides).uniq().length
    when 1 then "equilateral"
    when 2 then "isosceles"
    when 3 then "scalene"