Method: DataMapper::Query#slice!

Defined in:
lib/dm-core/query.rb

#slice!(*args) ⇒ Object

Slices collection by adding limit and offset to the query, so a single query is executed

will execute query with the following limit (when repository uses DataObjects adapter, and thus queries use SQL):

LIMIT 10

and then takes a slice of collection in the Ruby space

Examples:


Journal.all(:limit => 10).slice!(3, 5)


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# File 'lib/dm-core/query.rb', line 588

def slice!(*args)
  offset, limit = extract_slice_arguments(*args)

  if self.limit || self.offset > 0
    offset, limit = get_relative_position(offset, limit)
  end

  update(:offset => offset, :limit => limit)
end