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体验新版 GitCode,发现更多精彩内容 >>
提交
99363dcf
编写于
5月 06, 2011
作者:
M
Myron Marston
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电子邮件补丁
差异文件
Add documentation for new observer enable/disable feature.
上级
9c2c25c1
变更
3
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Showing
3 changed file
with
53 addition
and
3 deletion
+53
-3
activemodel/CHANGELOG
activemodel/CHANGELOG
+2
-0
activemodel/lib/active_model/observer_array.rb
activemodel/lib/active_model/observer_array.rb
+44
-1
activemodel/lib/active_model/observing.rb
activemodel/lib/active_model/observing.rb
+7
-2
未找到文件。
activemodel/CHANGELOG
浏览文件 @
99363dcf
...
...
@@ -15,6 +15,8 @@
* ActiveModel::AttributeMethods allows attributes to be defined on demand [Alexander Uvarov]
* Add support for selectively enabling/disabling observers [Myron Marston]
*Rails 3.0.2 (unreleased)*
...
...
activemodel/lib/active_model/observer_array.rb
浏览文件 @
99363dcf
...
...
@@ -2,7 +2,7 @@
module
ActiveModel
# Stores the enabled/disabled state of individual observers for
# a particular model class
es
.
# a particular model class.
class
ObserverArray
<
Array
attr_reader
:model_class
def
initialize
(
model_class
,
*
args
)
...
...
@@ -10,14 +10,57 @@ def initialize(model_class, *args)
super
(
*
args
)
end
# Returns true if the given observer is disabled for the model class.
def
disabled_for?
(
observer
)
disabled_observers
.
include?
(
observer
.
class
)
end
# Disables one or more observers. This supports multiple forms:
#
# ORM.observers.disable :user_observer
# # => disables the UserObserver
#
# User.observers.disable AuditTrail
# # => disables the AuditTrail observer for User notifications.
# # Other models will still notify the AuditTrail observer.
#
# ORM.observers.disable :observer_1, :observer_2
# # => disables Observer1 and Observer2 for all models.
#
# ORM.observers.disable :all
# # => disables all observers for all models.
#
# User.observers.disable :all do
# # all user observers are disabled for
# # just the duration of the block
# end
def
disable
(
*
observers
,
&
block
)
set_enablement
(
false
,
observers
,
&
block
)
end
# Enables one or more observers. This supports multiple forms:
#
# ORM.observers.enable :user_observer
# # => enables the UserObserver
#
# User.observers.enable AuditTrail
# # => enables the AuditTrail observer for User notifications.
# # Other models will not be affected (i.e. they will not
# # trigger notifications to AuditTrail if previously disabled)
#
# ORM.observers.enable :observer_1, :observer_2
# # => enables Observer1 and Observer2 for all models.
#
# ORM.observers.enable :all
# # => enables all observers for all models.
#
# User.observers.enable :all do
# # all user observers are enabled for
# # just the duration of the block
# end
#
# Note: all observers are enabled by default. This method is only
# useful when you have previously disabled one or more observers.
def
enable
(
*
observers
,
&
block
)
set_enablement
(
true
,
observers
,
&
block
)
end
...
...
activemodel/lib/active_model/observing.rb
浏览文件 @
99363dcf
...
...
@@ -40,7 +40,11 @@ def observers=(*values)
observers
.
replace
(
values
.
flatten
)
end
# Gets the current observers.
# Gets an array of observers observing this model.
# The array also provides +enable+ and +disable+ methods
# that allow you to selectively enable and disable observers.
# (see <tt>ActiveModel::ObserverArray.enable</tt> and
# <tt>ActiveModel::ObserverArray.disable</tt> for more on this)
def
observers
@observers
||=
ObserverArray
.
new
(
self
)
end
...
...
@@ -222,7 +226,8 @@ def observed_classes #:nodoc:
self
.
class
.
observed_classes
end
# Send observed_method(object) if the method exists.
# Send observed_method(object) if the method exists and
# the observer is enabled for the given object's class.
def
update
(
observed_method
,
object
)
#:nodoc:
return
unless
respond_to?
(
observed_method
)
return
if
disabled_for?
(
object
)
...
...
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