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| author | Maurizio De Santis <desantis.maurizio@gmail.com> | 2013-02-07 22:43:50 +0100 |
|---|---|---|
| committer | Maurizio De Santis <desantis.maurizio@gmail.com> | 2013-02-07 22:50:08 +0100 |
| commit | ba407c8f7b8ca48d9f20318d23b60b32d2cd6b9c (patch) | |
| tree | 30be2820928ebee51a7372d48221e2e4d62e01b7 /activerecord/lib | |
| parent | a8c2981f62555a7ea7e5b378509fca6009ba8a8e (diff) | |
| download | rails-ba407c8f7b8ca48d9f20318d23b60b32d2cd6b9c.tar.gz rails-ba407c8f7b8ca48d9f20318d23b60b32d2cd6b9c.tar.bz2 rails-ba407c8f7b8ca48d9f20318d23b60b32d2cd6b9c.zip | |
Add documentation for ActiveRecord.select when use strings as arguments
Diffstat (limited to 'activerecord/lib')
| -rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 42849d6bc9..c025facbb9 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -189,6 +189,16 @@ module ActiveRecord # Model.select(:field, :other_field, :and_one_more) # # => [#<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 # will throw <tt>ActiveModel::MissingAttributeError</tt>: # |