diff options
Diffstat (limited to 'activerecord/lib/active_record/support')
4 files changed, 168 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/support/class_attribute_accessors.rb b/activerecord/lib/active_record/support/class_attribute_accessors.rb new file mode 100644 index 0000000000..0e269165a6 --- /dev/null +++ b/activerecord/lib/active_record/support/class_attribute_accessors.rb @@ -0,0 +1,43 @@ +# attr_* style accessors for class-variables that can accessed both on an instance and class level. +class Class #:nodoc: + def cattr_reader(*syms) + syms.each do |sym| + class_eval <<-EOS + if ! defined? @@#{sym.id2name} + @@#{sym.id2name} = nil + end + + def self.#{sym.id2name} + @@#{sym} + end + + def #{sym.id2name} + self.class.#{sym.id2name} + end + EOS + end + end + + def cattr_writer(*syms) + syms.each do |sym| + class_eval <<-EOS + if ! defined? @@#{sym.id2name} + @@#{sym.id2name} = nil + end + + def self.#{sym.id2name}=(obj) + @@#{sym.id2name} = obj + end + + def #{sym.id2name}=(obj) + self.class.#{sym.id2name}=(obj) + end + EOS + end + end + + def cattr_accessor(*syms) + cattr_reader(*syms) + cattr_writer(*syms) + end +end
\ No newline at end of file diff --git a/activerecord/lib/active_record/support/class_inheritable_attributes.rb b/activerecord/lib/active_record/support/class_inheritable_attributes.rb new file mode 100644 index 0000000000..ee69646da0 --- /dev/null +++ b/activerecord/lib/active_record/support/class_inheritable_attributes.rb @@ -0,0 +1,37 @@ +# Allows attributes to be shared within an inheritance hierarchy, but where each descentent gets a copy of +# their parents' attributes, instead of just a pointer to the same. This means that the child can add elements +# to, for example, an array without those additions being shared with either their parent, siblings, or +# children, which is unlike the regular class-level attributes that are shared across the entire hierarchy. +module ClassInheritableAttributes # :nodoc: + def self.append_features(base) + super + base.extend(ClassMethods) + end + + module ClassMethods # :nodoc: + @@classes ||= {} + + def inheritable_attributes + @@classes[self] ||= {} + end + + def write_inheritable_attribute(key, value) + inheritable_attributes[key] = value + end + + def write_inheritable_array(key, elements) + write_inheritable_attribute(key, []) if read_inheritable_attribute(key).nil? + write_inheritable_attribute(key, read_inheritable_attribute(key) + elements) + end + + def read_inheritable_attribute(key) + inheritable_attributes[key] + end + + private + def inherited(child) + @@classes[child] = inheritable_attributes.dup + end + + end +end diff --git a/activerecord/lib/active_record/support/clean_logger.rb b/activerecord/lib/active_record/support/clean_logger.rb new file mode 100644 index 0000000000..1a36562892 --- /dev/null +++ b/activerecord/lib/active_record/support/clean_logger.rb @@ -0,0 +1,10 @@ +require 'logger' + +class Logger #:nodoc: + private + remove_const "Format" + Format = "%s\n" + def format_message(severity, timestamp, msg, progname) + Format % [msg] + end +end
\ No newline at end of file diff --git a/activerecord/lib/active_record/support/inflector.rb b/activerecord/lib/active_record/support/inflector.rb new file mode 100644 index 0000000000..05ff4fede9 --- /dev/null +++ b/activerecord/lib/active_record/support/inflector.rb @@ -0,0 +1,78 @@ +# The Inflector transforms words from singular to plural, class names to table names, modulized class names to ones without, +# and class names to foreign keys. +module Inflector + extend self + + def pluralize(word) + result = word.dup + plural_rules.each do |(rule, replacement)| + break if result.gsub!(rule, replacement) + end + return result + end + + def singularize(word) + result = word.dup + singular_rules.each do |(rule, replacement)| + break if result.gsub!(rule, replacement) + end + return result + end + + def camelize(lower_case_and_underscored_word) + lower_case_and_underscored_word.gsub(/(^|_)(.)/){$2.upcase} + end + + def underscore(camel_cased_word) + camel_cased_word.gsub(/([A-Z]+)([A-Z])/,'\1_\2').gsub(/([a-z])([A-Z])/,'\1_\2').downcase + end + + def demodulize(class_name_in_module) + class_name_in_module.gsub(/^.*::/, '') + end + + def tableize(class_name) + pluralize(underscore(class_name)) + end + + def classify(table_name) + camelize(singularize(table_name)) + end + + def foreign_key(class_name, separate_class_name_and_id_with_underscore = true) + Inflector.underscore(Inflector.demodulize(class_name)) + + (separate_class_name_and_id_with_underscore ? "_id" : "id") + end + + private + def plural_rules #:doc: + [ + [/(x|ch|ss)$/, '\1es'], # search, switch, fix, box, process, address + [/([^aeiouy]|qu)y$/, '\1ies'], # query, ability, agency + [/(?:([^f])fe|([lr])f)$/, '\1\2ves'], # half, safe, wife + [/sis$/, 'ses'], # basis, diagnosis + [/([ti])um$/, '\1a'], # datum, medium + [/person$/, 'people'], # person, salesperson + [/man$/, 'men'], # man, woman, spokesman + [/child$/, 'children'], # child + [/s$/, 's'], # no change (compatibility) + [/$/, 's'] + ] + end + + def singular_rules #:doc: + [ + [/(x|ch|ss)es$/, '\1'], + [/([^aeiouy]|qu)ies$/, '\1y'], + [/([lr])ves$/, '\1f'], + [/([^f])ves$/, '\1fe'], + [/(analy|ba|diagno|parenthe|progno|synop|the)ses$/, '\1sis'], + [/([ti])a$/, '\1um'], + [/people$/, 'person'], + [/men$/, 'man'], + [/status$/, 'status'], + [/children$/, 'child'], + [/s$/, ''] + ] + end +end
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