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Set a value to always be at the end of sorted list #60

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zokaibr opened this issue Jun 4, 2016 · 2 comments
Closed

Set a value to always be at the end of sorted list #60

zokaibr opened this issue Jun 4, 2016 · 2 comments

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@zokaibr
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zokaibr commented Jun 4, 2016

Sometimes, we need to keep a value at the end of a sorted list regardless its value.
For example, I have a list of movie types like ['comedy', 'romance', 'thiller', 'other'] and I need to keep the value 'other' always at the end even if I sort.

@lucascaton
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lucascaton commented Jun 4, 2016

Hi @dfmoreto,

You can solve this using the following code:

class MovieType < EnumerateIt::Base
  associate_values(
    :comedy,
    :romance,
    :thiller,
    :other,
    :zzz
  )

  class << self
    alias original_list list

    def list
      original_list - [MovieType::OTHER] + [MovieType::OTHER]
    end
  end
end
MovieType.original_list
# [
#   "comedy",
#   "romance",
#   "thiller",
#   "other",
#   "zzz"
# ]
MovieType.list
# [
#   "comedy",
#   "romance",
#   "thiller",
#   "zzz",
#   "other"
# ]

@zokaibr
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zokaibr commented Jun 4, 2016

Thanks a lot, @lucascaton !! 😄
So, before your answer, I forked and worked on a solution in the gem itself. It's working for me, but I'm having some problems when I try to execute RSpec. If you can help me with this, I can commit it.

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