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体验新版 GitCode,发现更多精彩内容 >>
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0bd668fd
编写于
3月 21, 2009
作者:
J
Jeremy Kemper
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电子邮件补丁
差异文件
Namespace HashWithIndifferentAccess
上级
2133044f
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
110 addition
and
106 deletion
+110
-106
activesupport/lib/active_support/core_ext/hash/indifferent_access.rb
...rt/lib/active_support/core_ext/hash/indifferent_access.rb
+1
-1
activesupport/lib/active_support/hash_with_indifferent_access.rb
...upport/lib/active_support/hash_with_indifferent_access.rb
+109
-105
未找到文件。
activesupport/lib/active_support/core_ext/hash/indifferent_access.rb
浏览文件 @
0bd668fd
...
...
@@ -2,7 +2,7 @@
class
Hash
def
with_indifferent_access
hash
=
HashWithIndifferentAccess
.
new
(
self
)
hash
=
ActiveSupport
::
HashWithIndifferentAccess
.
new
(
self
)
hash
.
default
=
self
.
default
hash
end
...
...
activesupport/lib/active_support/hash_with_indifferent_access.rb
浏览文件 @
0bd668fd
...
...
@@ -2,128 +2,132 @@
# people can write params[:key] instead of params['key']
# and they get the same value for both keys.
class
HashWithIndifferentAccess
<
Hash
def
initialize
(
constructor
=
{})
if
constructor
.
is_a?
(
Hash
)
super
()
update
(
constructor
)
else
super
(
constructor
)
module
ActiveSupport
class
HashWithIndifferentAccess
<
Hash
def
initialize
(
constructor
=
{})
if
constructor
.
is_a?
(
Hash
)
super
()
update
(
constructor
)
else
super
(
constructor
)
end
end
end
def
default
(
key
=
nil
)
if
key
.
is_a?
(
Symbol
)
&&
include
?(
key
=
key
.
to_s
)
self
[
key
]
else
super
def
default
(
key
=
nil
)
if
key
.
is_a?
(
Symbol
)
&&
include
?(
key
=
key
.
to_s
)
self
[
key
]
else
super
end
end
end
alias_method
:regular_writer
,
:[]=
unless
method_defined?
(:
regular_writer
)
alias_method
:regular_update
,
:update
unless
method_defined?
(
:regular_update
)
# Assigns a new value to the hash:
#
# hash = HashWithIndifferentAccess.new
# hash[:key] = "value"
#
def
[]=
(
key
,
value
)
regular_writer
(
convert_key
(
key
),
convert_value
(
value
))
end
alias_method
:regular_writer
,
:[]=
unless
method_defined?
(:
regular_writer
)
alias_method
:regular_update
,
:update
unless
method_defined?
(
:regular_update
)
# Updates the instantized hash with values from the second:
#
# hash_1 = HashWithIndifferentAccess.new
# hash_1[:key] = "value"
#
# hash_2 = HashWithIndifferentAccess.new
# hash_2[:key] = "New Value!"
#
# hash_1.update(hash_2) # => {"key"=>"New Value!"}
#
def
update
(
other_hash
)
other_hash
.
each_pair
{
|
key
,
value
|
regular_writer
(
convert_key
(
key
),
convert_value
(
value
))
}
self
end
# Assigns a new value to the hash:
#
# hash = HashWithIndifferentAccess.new
# hash[:key] = "value"
#
def
[]=
(
key
,
value
)
regular_writer
(
convert_key
(
key
),
convert_value
(
value
))
end
alias_method
:merge!
,
:update
# Checks the hash for a key matching the argument passed in:
#
# hash = HashWithIndifferentAccess.new
# hash["key"] = "value"
# hash.key? :key # => true
# hash.key? "key" # => true
#
def
key?
(
key
)
super
(
convert_key
(
key
))
end
# Updates the instantized hash with values from the second:
#
# hash_1 = HashWithIndifferentAccess.new
# hash_1[:key] = "value"
#
# hash_2 = HashWithIndifferentAccess.new
# hash_2[:key] = "New Value!"
#
# hash_1.update(hash_2) # => {"key"=>"New Value!"}
#
def
update
(
other_hash
)
other_hash
.
each_pair
{
|
key
,
value
|
regular_writer
(
convert_key
(
key
),
convert_value
(
value
))
}
self
end
alias_method
:include?
,
:key?
alias_method
:has_key?
,
:key?
alias_method
:member?
,
:key?
alias_method
:merge!
,
:update
# Checks the hash for a key matching the argument passed in:
#
# hash = HashWithIndifferentAccess.new
# hash["key"] = "value"
# hash.key? :key # => true
# hash.key? "key" # => true
#
def
key?
(
key
)
super
(
convert_key
(
key
))
end
# Fetches the value for the specified key, same as doing hash[key]
def
fetch
(
key
,
*
extras
)
super
(
convert_key
(
key
),
*
extras
)
end
alias_method
:include?
,
:key?
alias_method
:has_key?
,
:key?
alias_method
:member?
,
:key?
# Returns an array of the values at the specified indices:
#
# hash = HashWithIndifferentAccess.new
# hash[:a] = "x"
# hash[:b] = "y"
# hash.values_at("a", "b") # => ["x", "y"]
#
def
values_at
(
*
indices
)
indices
.
collect
{
|
key
|
self
[
convert_key
(
key
)]}
end
# Fetches the value for the specified key, same as doing hash[key]
def
fetch
(
key
,
*
extras
)
super
(
convert_key
(
key
),
*
extras
)
end
# Returns an exact copy of the hash.
def
dup
HashWithIndifferentAccess
.
new
(
self
)
end
# Returns an array of the values at the specified indices:
#
# hash = HashWithIndifferentAccess.new
# hash[:a] = "x"
# hash[:b] = "y"
# hash.values_at("a", "b") # => ["x", "y"]
#
def
values_at
(
*
indices
)
indices
.
collect
{
|
key
|
self
[
convert_key
(
key
)]}
end
# Merges the instantized and the specified hashes together, giving precedence to the values from the second hash
# Does not overwrite the existing hash.
def
merge
(
hash
)
self
.
dup
.
update
(
hash
)
end
# Returns an exact copy of the hash.
def
dup
HashWithIndifferentAccess
.
new
(
self
)
end
# Performs the opposite of merge, with the keys and values from the first hash taking precedence over the second.
# This overloaded definition prevents returning a regular hash, if reverse_merge is called on a HashWithDifferentAccess
.
def
reverse_merge
(
other_
hash
)
super
other_hash
.
with_indifferent_access
end
# Merges the instantized and the specified hashes together, giving precedence to the values from the second hash
# Does not overwrite the existing hash
.
def
merge
(
hash
)
self
.
dup
.
update
(
hash
)
end
# Removes a specified key from the hash.
def
delete
(
key
)
super
(
convert_key
(
key
))
end
# Performs the opposite of merge, with the keys and values from the first hash taking precedence over the second.
# This overloaded definition prevents returning a regular hash, if reverse_merge is called on a HashWithDifferentAccess.
def
reverse_merge
(
other_hash
)
super
other_hash
.
with_indifferent_access
end
def
stringify_keys!
;
self
end
def
symbolize_keys!
;
self
end
def
to_options!
;
self
end
# Removes a specified key from the hash.
def
delete
(
key
)
super
(
convert_key
(
key
))
end
# Convert to a Hash with String keys.
def
to_hash
Hash
.
new
(
default
).
merge
(
self
)
end
def
stringify_keys!
;
self
end
def
symbolize_keys!
;
self
end
def
to_options!
;
self
end
protected
def
convert_key
(
key
)
key
.
kind_of?
(
Symbol
)
?
key
.
to_s
:
key
# Convert to a Hash with String keys.
def
to_hash
Hash
.
new
(
default
).
merge
(
self
)
end
def
convert_value
(
value
)
case
value
when
Hash
value
.
with_indifferent_access
when
Array
value
.
collect
{
|
e
|
e
.
is_a?
(
Hash
)
?
e
.
with_indifferent_access
:
e
}
else
value
protected
def
convert_key
(
key
)
key
.
kind_of?
(
Symbol
)
?
key
.
to_s
:
key
end
end
def
convert_value
(
value
)
case
value
when
Hash
value
.
with_indifferent_access
when
Array
value
.
collect
{
|
e
|
e
.
is_a?
(
Hash
)
?
e
.
with_indifferent_access
:
e
}
else
value
end
end
end
end
HashWithIndifferentAccess
=
ActiveSupport
::
HashWithIndifferentAccess
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