diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract_adapter.rb')
-rwxr-xr-x | activerecord/lib/active_record/connection_adapters/abstract_adapter.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index a1a71afb5b..fed51fea18 100755 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -275,6 +275,19 @@ module ActiveRecord # Returns a record hash with the column names as a keys and fields as values. def select_one(sql, name = nil) end + # Returns a single value from a record + def select_value(sql, name = nil) + result = select_one(sql, name) + result.nil? ? nil : result.values.first + end + + # Returns an array of the values of the first column in a select: + # select_values("SELECT id FROM companies LIMIT 3") => [1,2,3] + def select_values(sql, name = nil) + result = select_all(sql, name) + result.map{ |v| v.values.first } + end + # Returns an array of table names for the current database. # def tables(name = nil) end |