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体验新版 GitCode,发现更多精彩内容 >>
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141d864e
编写于
8月 29, 2014
作者:
D
David Heinemeier Hansson
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电子邮件补丁
差异文件
Added yield to Object#presence
上级
7475b43c
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
23 addition
and
1 deletion
+23
-1
activesupport/CHANGELOG.md
activesupport/CHANGELOG.md
+6
-0
activesupport/lib/active_support/core_ext/object/blank.rb
activesupport/lib/active_support/core_ext/object/blank.rb
+12
-1
activesupport/test/core_ext/object/blank_test.rb
activesupport/test/core_ext/object/blank_test.rb
+5
-0
未找到文件。
activesupport/CHANGELOG.md
浏览文件 @
141d864e
*
Added yield to Object#presence, so you can do this:
person.presence { |p| p.name.first } || 'Nobody'
*DHH*
*
Fix the
`ActiveSupport::Duration#instance_of?`
method to return the right
value with the class itself since it was previously delegated to the
internal value.
...
...
activesupport/lib/active_support/core_ext/object/blank.rb
浏览文件 @
141d864e
...
...
@@ -39,9 +39,20 @@ def present?
#
# region = params[:state].presence || params[:country].presence || 'US'
#
# You can also use this with a block that will be yielded if the object is present
# and the result of that block will then be returned
#
# person.presence { |p| p.name.first } || 'Nobody'
#
# @return [Object]
def
presence
self
if
present?
if
present?
if
block_given?
yield
self
else
self
end
end
end
end
...
...
activesupport/test/core_ext/object/blank_test.rb
浏览文件 @
141d864e
...
...
@@ -33,4 +33,9 @@ def test_presence
BLANK
.
each
{
|
v
|
assert_equal
nil
,
v
.
presence
,
"
#{
v
.
inspect
}
.presence should return nil"
}
NOT
.
each
{
|
v
|
assert_equal
v
,
v
.
presence
,
"
#{
v
.
inspect
}
.presence should return self"
}
end
def
test_presence_with_a_block
assert_equal
"SALLY"
,
"sally"
.
presence
(
&
:upcase
)
||
"Nobody"
assert_equal
"Nobody"
,
nil
.
presence
(
&
:upcase
)
||
"Nobody"
end
end
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