Class: PackAPI::Querying::SortHash

Inherits:
Hash
  • Object
show all
Defined in:
lib/pack_api/querying/sort_hash.rb

Instance Method Summary collapse

Constructor Details

#initialize(sort_arg) ⇒ SortHash

Normalize a hash object to be used to control the sorting of a collection of objects

as the name of the attribute to sort by, and will sort in ascending order. When provided with a hash, the keys of the hash should be the names of the attributes to sort by, and the values should be either ‘:asc` or `:desc`

Parameters:

  • sort_arg (Hash|Symbol|String) —

    When provided with a string or a symbol, the sort hash will treat that



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# File 'lib/pack_api/querying/sort_hash.rb', line 12

def initialize(sort_arg)
  super()
  case sort_arg
  when Arel::Nodes::SqlLiteral, nil
    hash_entries = []
  when Hash
    hash_entries = sort_arg.to_a
  when Symbol
    hash_entries = [[sort_arg, :asc]]
  when String
    hash_entries = sort_arg.split(',').map do |sort_term|
      sort_term_parts = sort_term.split
      [sort_term_parts[0].to_sym, sort_term_parts[1]&.to_sym || :asc]
    end
  end

  hash_entries.each do |key, value|
    next unless key.present?

    self[key] = value
  end
  deep_transform_values! { it.downcase.to_sym }
end