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体验新版 GitCode,发现更多精彩内容 >>
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199db8c8
编写于
10月 13, 2010
作者:
J
Jon Leighton
浏览文件
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电子邮件补丁
差异文件
Hook ThroughAssociationScope up to use the AliasTracker class
上级
3f2e2580
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
30 addition
and
9 deletion
+30
-9
activerecord/lib/active_record/associations/through_association_scope.rb
...b/active_record/associations/through_association_scope.rb
+30
-9
未找到文件。
activerecord/lib/active_record/associations/through_association_scope.rb
浏览文件 @
199db8c8
...
...
@@ -20,6 +20,7 @@ def construct_scope
end
# Build SQL conditions from attributes, qualified by table name.
# TODO: Conditions on joins
def
construct_conditions
reflection
=
@reflection
.
through_reflection_chain
.
last
conditions
=
construct_quoted_owner_attributes
(
reflection
).
map
do
|
attr
,
value
|
...
...
@@ -134,24 +135,44 @@ def construct_through_joins
joins
.
join
(
" "
)
end
# TODO: Use the same aliasing strategy (and code?) as JoinAssociation (as this is the
# documented behaviour)
def
alias_tracker
@alias_tracker
||=
AliasTracker
.
new
end
def
table_aliases
@table_aliases
||=
begin
tally
=
{}
@reflection
.
through_reflection_chain
.
inject
({})
do
|
aliases
,
reflection
|
if
tally
[
reflection
.
table_name
].
nil?
tally
[
reflection
.
table_name
]
=
1
aliases
[
reflection
]
=
reflection
.
quoted_table_name
table_alias
=
quote_table_name
(
alias_tracker
.
aliased_name_for
(
reflection
.
table_name
,
table_alias_for
(
reflection
,
reflection
!=
@reflection
)
))
if
reflection
.
macro
==
:has_and_belongs_to_many
join_table_alias
=
quote_table_name
(
alias_tracker
.
aliased_name_for
(
reflection
.
options
[
:join_table
],
table_alias_for
(
reflection
,
true
)
))
aliases
[
reflection
]
=
[
table_alias
,
join_table_alias
]
else
tally
[
reflection
.
table_name
]
+=
1
aliased_table_name
=
reflection
.
table_name
+
"_
#{
tally
[
reflection
.
table_name
]
}
"
aliases
[
reflection
]
=
reflection
.
klass
.
connection
.
quote_table_name
(
aliased_table_name
)
aliases
[
reflection
]
=
table_alias
end
aliases
end
end
end
def
table_alias_for
(
reflection
,
join
=
false
)
name
=
alias_tracker
.
pluralize
(
reflection
.
name
)
name
<<
"_
#{
@reflection
.
name
}
"
name
<<
"_join"
if
join
name
end
def
quote_table_name
(
table_name
)
@reflection
.
klass
.
connection
.
quote_table_name
(
table_name
)
end
# Construct attributes for associate pointing to owner.
def
construct_owner_attributes
(
reflection
)
...
...
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