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体验新版 GitCode,发现更多精彩内容 >>
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38d31b0e
编写于
1月 28, 2011
作者:
J
Jesse Storimer
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差异文件
Correct docs for after_find and after_initialize
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activerecord/lib/active_record/callbacks.rb
activerecord/lib/active_record/callbacks.rb
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activerecord/lib/active_record/callbacks.rb
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38d31b0e
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@@ -25,7 +25,11 @@ module ActiveRecord
# Check out <tt>ActiveRecord::Transactions</tt> for more details about <tt>after_commit</tt> and
# <tt>after_rollback</tt>.
#
# That's a total of ten callbacks, which gives you immense power to react and prepare for each state in the
# Lastly an <tt>after_find</tt> and <tt>after_initialize</tt> callback is triggered for each object that
# is found and instantiated by a finder, with <tt>after_initialize</tt> being triggered after new objects
# are instantiated as well.
#
# That's a total of twelve callbacks, which gives you immense power to react and prepare for each state in the
# Active Record life cycle. The sequence for calling <tt>Base#save</tt> for an existing record is similar,
# except that each <tt>_on_create</tt> callback is replaced by the corresponding <tt>_on_update</tt> callback.
#
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@@ -185,14 +189,6 @@ module ActiveRecord
# 'puts "Evaluated after parents are destroyed"'
# end
#
# == The +after_find+ and +after_initialize+ exceptions
#
# Because +after_find+ and +after_initialize+ are called for each object found and instantiated by a finder,
# such as <tt>Base.find(:all)</tt>, we've had to implement a simple performance constraint (50% more speed
# on a simple test case). Unlike all the other callbacks, +after_find+ and +after_initialize+ will only be
# run if an explicit implementation is defined (<tt>def after_find</tt>). In that case, all of the
# callback types will be called.
#
# == <tt>before_validation*</tt> returning statements
#
# If the returning value of a +before_validation+ callback can be evaluated to +false+, the process will be
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