Sha256: 79a6b722a75689fabdc9a5d76c29a8e8463f76f177d32ba7227cc7d60775149e
Contents?: true
Size: 1.56 KB
Versions: 27
Compression:
Stored size: 1.56 KB
Contents
dm-aggregates ============= DataMapper plugin providing support for aggregates, functions on collections and datasets. It provides the following functions: == count Count results (given the conditions) Friend.count # returns count of all friends Friend.count(:age.gt => 18) # returns count of all friends older then 18 Friend.count(:conditions => [ 'gender = ?', 'female' ]) # returns count of all your female friends Friend.count(:address) # returns count of all friends with an address (NULL values are not included) Friend.count(:address, :age.gt => 18) # returns count of all friends with an address that are older then 18 Friend.count(:address, :conditions => [ 'gender = ?', 'female' ]) # returns count of all your female friends with an address == min Get the lowest value of a property Friend.min(:age) # returns the age of the youngest friend Friend.min(:age, :conditions => [ 'gender = ?', 'female' ]) # returns the age of the youngest female friends == max Get the highest value of a property Friend.max(:age) # returns the age of the oldest friend Friend.max(:age, :conditions => [ 'gender = ?', 'female' ]) # returns the age of the oldest female friends == avg Get the average value of a property Friend.avg(:age) # returns the average age of friends Friend.avg(:age, :conditions => [ 'gender = ?', 'female' ]) # returns the average age of the female friends == sum Get the total value of a property Friend.sum(:age) # returns total age of all friends Friend.max(:age, :conditions => [ 'gender = ?', 'female' ]) # returns the total age of all female friends
Version data entries
27 entries across 27 versions & 2 rubygems