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体验新版 GitCode,发现更多精彩内容 >>
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ba407c8f
编写于
2月 07, 2013
作者:
M
Maurizio De Santis
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差异文件
Add documentation for ActiveRecord.select when use strings as arguments
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activerecord/lib/active_record/relation/query_methods.rb
activerecord/lib/active_record/relation/query_methods.rb
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activerecord/lib/active_record/relation/query_methods.rb
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@@ -189,6 +189,16 @@ def references!(*args) # :nodoc:
...
@@ -189,6 +189,16 @@ def references!(*args) # :nodoc:
# Model.select(:field, :other_field, :and_one_more)
# Model.select(:field, :other_field, :and_one_more)
# # => [#<Model field: "value", other_field: "value", and_one_more: "value">]
# # => [#<Model field: "value", other_field: "value", and_one_more: "value">]
#
#
# You can also use one or more strings, which will be used unchanged as SELECT fields.
#
# Model.select('field AS field_one', 'other_field AS field_two')
# # => [#<Model field: "value", other_field: "value">]
#
# If an alias was specified, it will be accessible from the resulting objects:
#
# Model.select('field AS field_one').first.field_one
# # => "value"
#
# Accessing attributes of an object that do not have fields retrieved by a select
# Accessing attributes of an object that do not have fields retrieved by a select
# will throw <tt>ActiveModel::MissingAttributeError</tt>:
# will throw <tt>ActiveModel::MissingAttributeError</tt>:
#
#
...
...
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