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71b6f76543
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1330 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
97 lines
3.1 KiB
Ruby
97 lines
3.1 KiB
Ruby
# The Inflector transforms words from singular to plural, class names to table names, modularized class names to ones without,
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# and class names to foreign keys.
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module Inflector
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extend self
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def pluralize(word)
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result = word.to_s.dup
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plural_rules.each do |(rule, replacement)|
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break if result.gsub!(rule, replacement)
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end
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return result
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end
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def singularize(word)
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result = word.to_s.dup
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singular_rules.each do |(rule, replacement)|
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break if result.gsub!(rule, replacement)
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end
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return result
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end
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def camelize(lower_case_and_underscored_word)
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lower_case_and_underscored_word.to_s.gsub(/\/(.?)/) { "::" + $1.upcase }.gsub(/(^|_)(.)/) { $2.upcase }
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end
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def underscore(camel_cased_word)
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camel_cased_word.to_s.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z])/,'\1_\2').gsub(/([a-z\d])([A-Z])/,'\1_\2').downcase
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end
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def humanize(lower_case_and_underscored_word)
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lower_case_and_underscored_word.to_s.gsub(/_/, " ").capitalize
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end
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def demodulize(class_name_in_module)
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class_name_in_module.to_s.gsub(/^.*::/, '')
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end
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def tableize(class_name)
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pluralize(underscore(class_name))
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end
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def classify(table_name)
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camelize(singularize(table_name))
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end
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def foreign_key(class_name, separate_class_name_and_id_with_underscore = true)
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Inflector.underscore(Inflector.demodulize(class_name)) +
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(separate_class_name_and_id_with_underscore ? "_id" : "id")
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end
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def constantize(camel_cased_word)
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camel_cased_word.split("::").inject(Object) do |final_type, part|
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final_type = final_type.const_get(part)
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end
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end
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private
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def plural_rules #:doc:
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[
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[/(fish)$/i, '\1\2'], # fish
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[/(x|ch|ss|sh)$/i, '\1es'], # search, switch, fix, box, process, address
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[/(series)$/i, '\1\2'],
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[/([^aeiouy]|qu)ies$/i, '\1y'],
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[/([^aeiouy]|qu)y$/i, '\1ies'], # query, ability, agency
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[/(?:([^f])fe|([lr])f)$/i, '\1\2ves'], # half, safe, wife
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[/sis$/i, 'ses'], # basis, diagnosis
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[/([ti])um$/i, '\1a'], # datum, medium
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[/(p)erson$/i, '\1\2eople'], # person, salesperson
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[/(m)an$/i, '\1\2en'], # man, woman, spokesman
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[/(c)hild$/i, '\1\2hildren'], # child
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[/s$/i, 's'], # no change (compatibility)
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[/$/, 's']
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]
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end
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def singular_rules #:doc:
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[
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[/(f)ish$/i, '\1\2ish'],
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[/(x|ch|ss|sh)es$/i, '\1'],
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[/(m)ovies$/i, '\1\2ovie'],
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[/(s)eries$/i, '\1\2eries'],
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[/([^aeiouy]|qu)ies$/i, '\1y'],
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[/([lr])ves$/i, '\1f'],
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[/(tive)s$/i, '\1'],
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[/([^f])ves$/i, '\1fe'],
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[/(^analy)ses$/i, '\1sis'],
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[/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i, '\1\2sis'],
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[/([ti])a$/i, '\1um'],
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[/(p)eople$/i, '\1\2erson'],
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[/(m)en$/i, '\1\2an'],
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[/(s)tatus$/i, '\1\2tatus'],
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[/(c)hildren$/i, '\1\2hild'],
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[/(n)ews$/i, '\1\2ews'],
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[/s$/i, '']
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]
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end
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end
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