Active Record Full Text Search Module

gistfile1.txt

module FullSearchable
  def searchable(scope_name, *attrs)
    raise ArgumentError if attrs.blank?

    define_singleton_method("#{scope_name}") do |terms|
      return if terms.blank?
      composed_scope = self.scoped

      terms.downcase.split(' ') .each do |term|
        composed_scope = composed_scope.where(create_query(attrs, term))
      end

      composed_scope

    end
  end

  private

  def create_query(attributes, term)
    attrb = ""
    term = '%' << term << '%'
    attributes.each do |attr|
      attrb += " OR " if attrb.present?
      attrb += "lower(#{attr}) LIKE '#{term}'"
    end

    attrb
  end

end

#usage:
#class Sample
#  extend FullSearchable
#  searchable :method_name, :attr1, :attr2...
#end
#
# Sample.method_name("search param")