ditkrg/validates_timeliness
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added dirty attribute handling

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This commit is contained in:
Adam Meehan
2008-06-30 22:37:13 +10:00
parent 39e16d2fde
commit a69e018992
2 changed files with 38 additions and 11 deletions
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36
lib/validates_timeliness/attribute_methods.rb
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@@ -10,14 +10,20 @@ module ValidatesTimeliness
# be converted to local timezone and then stored and cached to avoid the need
# for any subsequent differentiation.
#
# A wholesale replacement of the Rails time type casting is not done to preserve
# The wholesale replacement of the Rails time type casting is not done to preserve
# the quick conversion for timestamp columns and also any value which is never
# touched during the life of the record object.
module AttributeMethods
def self.included(base)
base.extend ClassMethods
if RAILS_VER <= '2.1'
if Rails::VERSION::STRING <= '2.1'
base.class_eval do
class << self
alias_method :define_read_method_for_time, :define_read_method_for_time_zone_conversion
alias_method :define_write_method_for_time, :define_write_method_for_time_zone_conversion
end
end
base.extend ClassMethodsOld
end
end
@@ -29,7 +35,12 @@ module ValidatesTimeliness
# convert to time if still valid. Check for pre Rails 2.1
time = time && defined?(ActiveSupport::TimeWithZone) ? Time.zone.parse(time) : time.to_time rescue nil
end
time.respond_to?(:in_time_zone) ? time.in_time_zone : time rescue time
time_in_time_zone(time)
end
# Handles timezone shift for Rails 2.1 or just returns time for old versions
def time_in_time_zone(time)
time.respond_to?(:in_time_zone) ? time.in_time_zone : time
end
def read_attribute(attr_name)
@@ -53,16 +64,20 @@ module ValidatesTimeliness
module ClassMethods
# Define time attribute write r method to store time value as is without
# Define time attribute write method to store time value as is without
# conversion and then convert time with strict conversion and cache it.
def define_write_method_for_time_zone_conversion(attr_name)
method_body = <<-EOV
def #{attr_name}=(time)
old = read_attribute('#{attr_name}') if defined?(Dirty)
@attributes['#{attr_name}'] = time
unless time.acts_like?(:time)
time = strict_time_type_cast(time)
time = strict_time_type_cast(time)
end
time = time_in_time_zone(time)
if defined?(Dirty) && old != time
changed_attributes['#{attr_name}'] = (old.duplicable? ? old.clone : old)
end
time = time.respond_to?(:in_time_zone) ? time.in_time_zone : time
@attributes_cache['#{attr_name}'] = time
end
EOV
@@ -83,9 +98,9 @@ module ValidatesTimeliness
time = strict_time_type_cast(time)
else
time = read_attribute('#{attr_name}')
@attributes['#{attr_name}'] = time.respond_to?(:in_time_zone) ? time.in_time_zone : time
@attributes['#{attr_name}'] = time_in_time_zone(time)
end
@attributes_cache['#{attr_name}'] = time.respond_to?(:in_time_zone) ? time.in_time_zone : time
@attributes_cache['#{attr_name}'] = time_in_time_zone(time)
end
EOV
evaluate_attribute_method attr_name, method_body
@@ -97,6 +112,7 @@ module ValidatesTimeliness
module ClassMethodsOld
# Modified from AR to define Time attribute reader and writer methods with
# strict time type casting. Timezone conversion is ignored for pre Rails 2.1
def define_attribute_methods
return if generated_methods?
columns_hash.each do |name, column|
@@ -104,7 +120,7 @@ module ValidatesTimeliness
if self.serialized_attributes[name]
define_read_method_for_serialized_attribute(name)
elsif column.klass == Time
define_read_method_for_time_zone_conversion(name.to_sym)
define_read_method_for_time(name.to_sym)
else
define_read_method(name.to_sym, name, column)
end
@@ -112,7 +128,7 @@ module ValidatesTimeliness
unless instance_method_already_implemented?("#{name}=")
if column.klass == Time
define_write_method_for_time_zone_conversion(name.to_sym)
define_write_method_for_time(name.to_sym)
else
define_write_method(name.to_sym)
end