diff options
Diffstat (limited to 'activerecord/lib/active_record')
6 files changed, 48 insertions, 45 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 651b17920c..d8b6d7a86b 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -234,7 +234,7 @@ module ActiveRecord # others.size | X | X | X # others.length | X | X | X # others.count | X | X | X - # others.sum(args*,&block) | X | X | X + # others.sum(*args) | X | X | X # others.empty? | X | X | X # others.clear | X | X | X # others.delete(other,other,...) | X | X | X diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb index 862ff201de..1548e68cea 100644 --- a/activerecord/lib/active_record/associations/collection_association.rb +++ b/activerecord/lib/active_record/associations/collection_association.rb @@ -161,15 +161,6 @@ module ActiveRecord end end - # Calculate sum using SQL, not Enumerable. - def sum(*args) - if block_given? - scope.sum(*args) { |*block_args| yield(*block_args) } - else - scope.sum(*args) - end - end - # Count all records using SQL. If the +:counter_sql+ or +:finder_sql+ option is set for the # association, it will be used for the query. Otherwise, construct options and pass them with # scope to the target class's +count+. diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb index 90701938e5..3c03cce838 100644 --- a/activerecord/lib/active_record/attribute_methods/read.rb +++ b/activerecord/lib/active_record/attribute_methods/read.rb @@ -32,21 +32,29 @@ module ActiveRecord protected - # We want to generate the methods via module_eval rather than define_method, - # because define_method is slower on dispatch and uses more memory (because it - # creates a closure). + # We want to generate the methods via module_eval rather than + # define_method, because define_method is slower on dispatch and + # uses more memory (because it creates a closure). # - # But sometimes the database might return columns with characters that are not - # allowed in normal method names (like 'my_column(omg)'. So to work around this - # we first define with the __temp__ identifier, and then use alias method to - # rename it to what we want. - def define_method_attribute(attr_name) + # But sometimes the database might return columns with + # characters that are not allowed in normal method names (like + # 'my_column(omg)'. So to work around this we first define with + # the __temp__ identifier, and then use alias method to rename + # it to what we want. + # + # We are also defining a constant to hold the frozen string of + # the attribute name. Using a constant means that we do not have + # to allocate an object on each call to the attribute method. + # Making it frozen means that it doesn't get duped when used to + # key the @attributes_cache in read_attribute. + def define_method_attribute(name) + safe_name = name.unpack('h*').first generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1 - def __temp__ - read_attribute('#{attr_name}') { |n| missing_attribute(n, caller) } + def __temp__#{safe_name} + read_attribute(AttrNames::ATTR_#{safe_name}) { |n| missing_attribute(n, caller) } end - alias_method '#{attr_name}', :__temp__ - undef_method :__temp__ + alias_method #{name.inspect}, :__temp__#{safe_name} + undef_method :__temp__#{safe_name} STR end diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb index fa9097db1f..cd33494cc3 100644 --- a/activerecord/lib/active_record/attribute_methods/write.rb +++ b/activerecord/lib/active_record/attribute_methods/write.rb @@ -9,15 +9,19 @@ module ActiveRecord module ClassMethods protected - def define_method_attribute=(attr_name) - if attr_name =~ ActiveModel::AttributeMethods::NAME_COMPILABLE_REGEXP - generated_attribute_methods.module_eval("def #{attr_name}=(new_value); write_attribute('#{attr_name}', new_value); end", __FILE__, __LINE__) - else - generated_attribute_methods.send(:define_method, "#{attr_name}=") do |new_value| - write_attribute(attr_name, new_value) - end + + # See define_method_attribute in read.rb for an explanation of + # this code. + def define_method_attribute=(name) + safe_name = name.unpack('h*').first + generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1 + def __temp__#{safe_name}=(value) + write_attribute(AttrNames::ATTR_#{safe_name}, value) end - end + alias_method #{(name + '=').inspect}, :__temp__#{safe_name}= + undef_method :__temp__#{safe_name}= + STR + end end # Updates the attribute identified by <tt>attr_name</tt> with the diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index 957027c1ee..94c6684700 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -83,7 +83,12 @@ module ActiveRecord @attribute_methods_mutex = Mutex.new # force attribute methods to be higher in inheritance hierarchy than other generated methods - generated_attribute_methods + generated_attribute_methods.const_set(:AttrNames, Module.new { + def self.const_missing(name) + const_set(name, [name.to_s.sub(/ATTR_/, '')].pack('h*').freeze) + end + }) + generated_feature_methods end diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 741f94f777..72b035a023 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -1,3 +1,5 @@ +require 'active_support/deprecation' + module ActiveRecord module Calculations # Count the records. @@ -13,16 +15,9 @@ module ActiveRecord # # Person.count(:age, distinct: true) # # => counts the number of different age values - # - # Person.where("age > 26").count { |person| person.gender == 'female' } - # # => queries people where "age > 26" then count the loaded results filtering by gender def count(column_name = nil, options = {}) - if block_given? - self.to_a.count { |item| yield item } - else - column_name, options = nil, column_name if column_name.is_a?(Hash) - calculate(:count, column_name, options) - end + column_name, options = nil, column_name if column_name.is_a?(Hash) + calculate(:count, column_name, options) end # Calculates the average value on a given column. Returns +nil+ if there's @@ -56,13 +51,13 @@ module ActiveRecord # +calculate+ for examples with options. # # Person.sum('age') # => 4562 - # # => returns the total sum of all people's age - # - # Person.where('age > 100').sum { |person| person.age - 100 } - # # queries people where "age > 100" then perform a sum calculation with the block returns def sum(*args) if block_given? - self.to_a.sum(*args) { |item| yield item } + ActiveSupport::Deprecation.warn( + "Calling #sum with a block is deprecated and will be removed in Rails 4.1. " \ + "If you want to perform sum calculation over the array of elements, use `to_a.sum(&block)`." + ) + self.to_a.sum(*args) {|*block_args| yield(*block_args)} else calculate(:sum, *args) end |