module Datmachine::Utils

Public Instance Methods

assert_required_keys(hash, params) click to toggle source
# File lib/datmachine/utils.rb, line 84
def assert_required_keys(hash, params)
  params[:required] ||= []
  pending_keys = params[:required] - hash.keys
  raise(ArgumentError, "Required key(s) not present: #{pending_keys.join(', ')}") unless pending_keys.empty?
end
assert_valid_keys(hash, *valid_keys) click to toggle source
# File lib/datmachine/utils.rb, line 79
def assert_valid_keys(hash, *valid_keys)
  unknown_keys = hash.keys - [valid_keys].flatten
  raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(', ')}") unless unknown_keys.empty?
end
callable( callable_or_not ) click to toggle source
# File lib/datmachine/utils.rb, line 5
def callable( callable_or_not )
  callable_or_not.respond_to?(:call) ? callable_or_not : lambda { callable_or_not }
end
camelize(underscored_word) click to toggle source
# File lib/datmachine/utils.rb, line 9
def camelize(underscored_word)
  underscored_word.to_s.gsub(/(?:^|_)(.)/) { $1.upcase }
end
classify(table_name) click to toggle source
# File lib/datmachine/utils.rb, line 13
def classify(table_name)
  camelize singularize(table_name.to_s.sub(/.*\./, ''))
end
demodulize(class_name_in_module) click to toggle source
# File lib/datmachine/utils.rb, line 17
def demodulize(class_name_in_module)
  class_name_in_module.to_s.sub(/^.*::/, '')
end
extract_href_from_object(object) click to toggle source
# File lib/datmachine/utils.rb, line 39
def extract_href_from_object(object)
  object.respond_to?(:href) ? object.href : object
end
indifferent_read_access(base = {}) click to toggle source
# File lib/datmachine/utils.rb, line 43
def indifferent_read_access(base = {})
  indifferent = Hash.new do |hash, key|
    hash[key.to_s] if key.is_a? Symbol
  end
  base.each_pair do |key, value|
    if value.is_a? Hash
      value = indifferent_read_access value
    elsif value.respond_to? :each
      if value.respond_to? :map!
        value.map! do |v|
          if v.is_a? Hash
            v = indifferent_read_access v
          end
          v
        end
      else
        value.map do |v|
          if v.is_a? Hash
            v = indifferent_read_access v
          end
          v
        end
      end
    end
    indifferent[key.to_s] = value
  end
  indifferent
end
pluralize(word) click to toggle source
# File lib/datmachine/utils.rb, line 21
def pluralize(word)
  word.to_s.sub(/([^s])$/, '\1s')
end
singularize(word) click to toggle source
# File lib/datmachine/utils.rb, line 25
def singularize(word)
  word.to_s.sub(/s$/, '').sub(/ie$/, 'y')
end
stringify_keys!(hash) click to toggle source
# File lib/datmachine/utils.rb, line 72
def stringify_keys!(hash)
  hash.keys.each do |key|
    stringify_keys! hash[key] if hash[key].is_a? Hash
    hash[key.to_s] = hash.delete key if key.is_a? Symbol
  end
end
underscore(camel_cased_word) click to toggle source
# File lib/datmachine/utils.rb, line 29
def underscore(camel_cased_word)
  word = camel_cased_word.to_s.dup
  word.gsub!(/::/, '/')
  word.gsub!(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
  word.gsub!(/([a-z\d])([A-Z])/, '\1_\2')
  word.tr! '-', '_'
  word.downcase!
  word
end