CanSearch

Allows you create common named_scopes and chain them together with #search and #search_for.

class Topic belongs_to :forum

can_search do
  scoped_by :forums
  scoped_by :created, :scope => :date_range
end

# creates these two named scopes
#   named_scope :by_forums, lambda { |f| {:conditions => {:forum_id => f}} }
#   named_scope :created,   lambda { |range| {:conditions => ...} }

end

Topic.search(:forum => 1) # Topic.by_forums(1) Topic.search(:forums => [1,2]) # Topic.by_forums([1,2]) Topic.search(:created => (time1..time2)) # Topic.created(time1..time2) Topic.search(:created =>
{:period => :daily, :start => Time.now}) # Topic.created(Time.now, Time.now + 1.day)

You can automatically paginate:

Topic.search :forum => 1, :page => params[:page]

You can also access the named_scope directly for custom #find or #calculate calls.

Topic.search_for(:forum => 1).sum(:hits)

Oh, and you can combine scopes:

Topic.search :forum => 1, :forums => [2, 3], :created => (time1..time2)

def can_search(&block) self.search_scopes = CanSearch::SearchScopes.new(self, &block) end end

Copyright (c) 2008-* Rick Olson, released under the MIT license