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88714deb
编写于
6月 16, 2014
作者:
R
Rafael Mendonça França
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差异文件
Merge pull request #15759 from sgrif/sg-extract-type-decorator
Refactor application of type decorators into an object
上级
91532738
63bbaaa4
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
24 addition
and
8 deletion
+24
-8
activerecord/lib/active_record/attribute_decorators.rb
activerecord/lib/active_record/attribute_decorators.rb
+24
-8
未找到文件。
activerecord/lib/active_record/attribute_decorators.rb
浏览文件 @
88714deb
...
...
@@ -4,7 +4,7 @@ module AttributeDecorators # :nodoc:
included
do
class_attribute
:attribute_type_decorations
,
instance_accessor:
false
# :internal:
self
.
attribute_type_decorations
=
Hash
.
new
({})
self
.
attribute_type_decorations
=
TypeDecorator
.
new
end
module
ClassMethods
...
...
@@ -13,22 +13,38 @@ def decorate_attribute_type(column_name, decorator_name, &block)
column_name
=
column_name
.
to_s
# Create new hashes so we don't modify parent classes
decorations_for_column
=
attribute_type_decorations
[
column_name
]
new_decorations
=
decorations_for_column
.
merge
(
decorator_name
.
to_s
=>
block
)
self
.
attribute_type_decorations
=
attribute_type_decorations
.
merge
(
column_name
=>
new_decorations
)
self
.
attribute_type_decorations
=
attribute_type_decorations
.
merge
(
column_name
,
decorator_name
,
block
)
end
private
def
add_user_provided_columns
(
*
)
super
.
map
do
|
column
|
decorations
=
attribute_type_decorations
[
column
.
name
].
values
decorated_type
=
decorations
.
inject
(
column
.
cast_type
)
do
|
type
,
block
|
block
.
call
(
type
)
end
decorated_type
=
attribute_type_decorations
.
apply
(
column
.
name
,
column
.
cast_type
)
column
.
with_type
(
decorated_type
)
end
end
end
class
TypeDecorator
delegate
:clear
,
to: :@decorations
def
initialize
(
decorations
=
Hash
.
new
({}))
@decorations
=
decorations
end
def
merge
(
attribute_name
,
decorator_name
,
block
)
decorations_for_attribute
=
@decorations
[
attribute_name
]
new_decorations
=
decorations_for_attribute
.
merge
(
decorator_name
.
to_s
=>
block
)
TypeDecorator
.
new
(
@decorations
.
merge
(
attribute_name
=>
new_decorations
))
end
def
apply
(
attribute_name
,
type
)
decorations
=
@decorations
[
attribute_name
].
values
decorations
.
inject
(
type
)
do
|
new_type
,
block
|
block
.
call
(
new_type
)
end
end
end
end
end
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