class Link < ActiveRecord::Base
	validates_length_of :url, :within => 5..150
	validates_length_of :info, :maximum => 50
	belongs_to :user
	default_scope :order => 'url asc'

	def self.getPageForUser(user,page,sort_field,sort_dir)

		if sort_field
            if Link.attribute_method?(sort_field) == true
                order = sort_field
                sort_dir == 'desc' ? order += ' desc' : sort_dir
            end
        end

        Link.paginate :page => page , :per_page => $defaults["links_per_page"], :conditions=> ['user_id = ?', user.id],:order => order
    end
    
    def export
        fields = []
        fields << url || ""
        fields << info || ""
        fields.join(';')
    end

    def self.import(user,line)
        fields = line.split(/;/)
        contact = user.links.build(	:url => fields[0].strip,
                                    :info => fields[1].strip)
        contact.save!
    end
    
end