Class ActiveSupport::Inflector::Inflections
In: vendor/rails/activesupport/lib/active_support/inflector.rb
Parent: Object

A singleton instance of this class is yielded by Inflector.inflections, which can then be used to specify additional inflection rules. Examples: 

  ActiveSupport::Inflector.inflections do |inflect|
    inflect.plural /^(ox)$/i, '\1\2en'
    inflect.singular /^(ox)en/i, '\1'

    inflect.irregular 'octopus', 'octopi'

    inflect.uncountable "equipment"
  end

New rules are added at the top. So in the example above, the irregular rule for octopus will now be the first of the pluralization and singularization rules that is runs. This guarantees that your rules run before any of the rules that may already have been loaded.

Methods

clear   human   irregular   new   plural   singular   uncountable  

Included Modules

Singleton

Attributes

humans  [R] 
plurals  [R] 
singulars  [R] 
uncountables  [R] 

Public Class methods

new()

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 37
37:       def initialize
38:         @plurals, @singulars, @uncountables, @humans = [], [], [], []
39:       end

Public Instance methods

clear(scope = :all)

Clears the loaded inflections within a given scope (default is :all). Give the scope as a symbol of the inflection type, the options are: :plurals, :singulars, :uncountables, :humans.

Examples: 

  clear :all
  clear :plurals

[Source]

     # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 105
105:       def clear(scope = :all)
106:         case scope
107:           when :all
108:             @plurals, @singulars, @uncountables = [], [], []
109:           else
110:             instance_variable_set "@#{scope}", []
111:         end
112:       end
human(rule, replacement)

Specifies a humanized form of a string by a regular expression rule or by a string mapping. When using a regular expression based replacement, the normal humanize formatting is called after the replacement. When a string is used, the human form should be specified as desired (example: ‘The name’, not ‘the_name’)

Examples: 

  human /_cnt$/i, '\1_count'
  human "legacy_col_person_name", "Name"

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 94
94:       def human(rule, replacement)
95:         @humans.insert(0, [rule, replacement])
96:       end
irregular(singular, plural)

Specifies a new irregular that applies to both pluralization and singularization at the same time. This can only be used for strings, not regular expressions. You simply pass the irregular in singular and plural form.

Examples: 

  irregular 'octopus', 'octopi'
  irregular 'person', 'people'

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 63
63:       def irregular(singular, plural)
64:         @uncountables.delete(singular)
65:         @uncountables.delete(plural)
66:         if singular[0,1].upcase == plural[0,1].upcase
67:           plural(Regexp.new("(#{singular[0,1]})#{singular[1..-1]}$", "i"), '\1' + plural[1..-1])
68:           singular(Regexp.new("(#{plural[0,1]})#{plural[1..-1]}$", "i"), '\1' + singular[1..-1])
69:         else
70:           plural(Regexp.new("#{singular[0,1].upcase}(?i)#{singular[1..-1]}$"), plural[0,1].upcase + plural[1..-1])
71:           plural(Regexp.new("#{singular[0,1].downcase}(?i)#{singular[1..-1]}$"), plural[0,1].downcase + plural[1..-1])
72:           singular(Regexp.new("#{plural[0,1].upcase}(?i)#{plural[1..-1]}$"), singular[0,1].upcase + singular[1..-1])
73:           singular(Regexp.new("#{plural[0,1].downcase}(?i)#{plural[1..-1]}$"), singular[0,1].downcase + singular[1..-1])
74:         end
75:       end
plural(rule, replacement)

Specifies a new pluralization rule and its replacement. The rule can either be a string or a regular expression. The replacement should always be a string that may include references to the matched data from the rule.

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 43
43:       def plural(rule, replacement)
44:         @uncountables.delete(rule) if rule.is_a?(String)
45:         @uncountables.delete(replacement)
46:         @plurals.insert(0, [rule, replacement])
47:       end
singular(rule, replacement)

Specifies a new singularization rule and its replacement. The rule can either be a string or a regular expression. The replacement should always be a string that may include references to the matched data from the rule.

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 51
51:       def singular(rule, replacement)
52:         @uncountables.delete(rule) if rule.is_a?(String)
53:         @uncountables.delete(replacement)
54:         @singulars.insert(0, [rule, replacement])
55:       end
uncountable(*words)

Add uncountable words that shouldn‘t be attempted inflected.

Examples: 

  uncountable "money"
  uncountable "money", "information"
  uncountable %w( money information rice )

[Source]

    # File vendor/rails/activesupport/lib/active_support/inflector.rb, line 83
83:       def uncountable(*words)
84:         (@uncountables << words).flatten!
85:       end

[Validate]