Module: Conject::Utilities

Defined in:
lib/conject/utilities.rb

Class Method Summary collapse

Class Method Details

.camelize(lower_case_and_underscored_word, first_letter_in_uppercase = true) ⇒ Object

(LIFTED FROM ActiveSupport::Inflector) By default, camelize converts strings to UpperCamelCase. If the argument to camelize is set to :lower then camelize produces lowerCamelCase.

camelize will also convert ‘/’ to ‘::’ which is useful for converting paths to namespaces.

Examples:

"active_record".camelize                # => "ActiveRecord"
"active_record".camelize(:lower)        # => "activeRecord"
"active_record/errors".camelize         # => "ActiveRecord::Errors"
"active_record/errors".camelize(:lower) # => "activeRecord::Errors"

As a rule of thumb you can think of camelize as the inverse of underscore, though there are cases where that does not hold:

"SSLError".underscore.camelize # => "SslError"



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# File 'lib/conject/utilities.rb', line 30

def camelize(lower_case_and_underscored_word, first_letter_in_uppercase = true)
  if first_letter_in_uppercase
    lower_case_and_underscored_word.to_s.gsub(/\/(.?)/) { "::#{$1.upcase}" }.gsub(/(?:^|_)(.)/) { $1.upcase }
  else
    lower_case_and_underscored_word.to_s[0].chr.downcase + camelize(lower_case_and_underscored_word)[1..-1]
  end
end

.generate_accessor_method_names(object_name) ⇒ Object 



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# File 'lib/conject/utilities.rb', line 9

def generate_accessor_method_names(object_name)
  parts = object_name.to_s.split("/").reject do |x| x == "" end
  [ parts.join("_").to_sym, parts.last.to_sym ].uniq
end

.has_zero_arg_constructor?(klass) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/conject/utilities.rb', line 4

def has_zero_arg_constructor?(klass)
  init_arity = klass.instance_method(:initialize).arity
  init_arity == 0 or (RUBY_VERSION <= "1.9.2" and init_arity == -1)
end

.underscore(camel_cased_word) ⇒ Object

(LIFTED FROM ActiveSupport::Inflector) Makes an underscored, lowercase form from the expression in the string.

Changes ‘::’ to ‘/’ to convert namespaces to paths.

Examples:

"ActiveRecord".underscore         # => "active_record"
"ActiveRecord::Errors".underscore # => active_record/errors

As a rule of thumb you can think of underscore as the inverse of camelize, though there are cases where that does not hold:

"SSLError".underscore.camelize # => "SslError"



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# File 'lib/conject/utilities.rb', line 51

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