Adding parameter to a scope

Question

I have a ActiveRecord query for example like this:

@result = stuff.limit(10)

where stuff is a active record query with where clauses, order by,

Answer 1

The scope would look like any other (although you may prefer a class method), e.g.,

class Stuff < ActiveRecord::Base
  def self.lim
    limit(3)
  end
end

> Stuff.lim.all
=> [#,
 #,
 #]
> Stuff.all.length
=> 8

If you always (or "almost" always) want that limit, use a default scope:

class Stuff < ActiveRecord::Base
  attr_accessible :name, :hdfs_file

  default_scope limit(3)
end

> Stuff.all
=> [#,
 #,
 #]
> Stuff.all.length
=> 3

To skip the default scope:

> Stuff.unscoped.all.size
=> 8