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Contents
module ActiveRecord #:nodoc:
module ConnectionAdapters #:nodoc:
module OracleEnhancedDirty #:nodoc:
module InstanceMethods #:nodoc:
private
def _field_changed?(attr, old, value)
if column = column_for_attribute(attr)
# Added also :decimal type
if (column.type == :integer || column.type == :decimal) && column.null && (old.nil? || old == 0) && value.blank?
# For nullable integer columns, NULL gets stored in database for blank (i.e. '') values.
# Hence we don't record it as a change if the value changes from nil to ''.
# If an old value of 0 is set to '' we want this to get changed to nil as otherwise it'll
# be typecast back to 0 (''.to_i => 0)
value = nil
# Oracle stores empty string '' as NULL
# therefore need to convert empty string value to nil if old value is nil
elsif column.type == :string && column.null && old.nil?
value = nil if value == ''
elsif old == 0 && value.is_a?(String) && value.present? && value != '0'
value = nil
else
value = column.type_cast(value)
end
end
old != value
end
end
end
end
end
if ActiveRecord::Base.method_defined?(:changed?)
ActiveRecord::Base.class_eval do
include ActiveRecord::ConnectionAdapters::OracleEnhancedDirty::InstanceMethods
# Starting with rails 3.2.9 the method #field_changed?
# was renamed to #_field_changed?
if private_method_defined?(:field_changed?)
alias_method :field_changed?, :_field_changed?
end
end
end
Version data entries
7 entries across 7 versions & 2 rubygems