On 20 July 2010 20:27, Amit Kumar <[email protected]> wrote: > Hi, > > I have just started using rails and i am trying to use IP database to > get user location. > > Here are the database schemas... > > [code]CREATE TABLE IF NOT EXISTS `ip_group_cities` ( > `ip_start` bigint(20) NOT NULL, > `location` int(11) NOT NULL, > UNIQUE KEY `index_ip_group_cities_on_ip_start` (`ip_start`) > ) ENGINE=InnoDB DEFAULT CHARSET=latin1; > > CREATE TABLE IF NOT EXISTS `iso3166_countries` ( > `code` varchar(2) NOT NULL, > `name` varchar(64) NOT NULL, > UNIQUE KEY `index_iso3166_countries_on_code` (`code`) > ) ENGINE=InnoDB DEFAULT CHARSET=latin1; > > > CREATE TABLE IF NOT EXISTS `locations` ( > `id` int(11) NOT NULL AUTO_INCREMENT, > `country_code` varchar(2) NOT NULL, > `region_code` varchar(2) NOT NULL, > `city` varchar(64) NOT NULL, > `zipcode` varchar(8) NOT NULL, > `latitude` float NOT NULL, > `longitude` float NOT NULL, > `metrocode` varchar(3) NOT NULL, > PRIMARY KEY (`id`) > ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=2 ;[/code] > > and here is the sql [code]SELECT locations.city,locations.id FROM > ip_group_cities,locations where ip_group_cities.ip_start <= > INET_ATON('$ip') AND ip_group_cities.location = locations.id order by > ip_group_cities.ip_start desc limit 1[/code] > > i have used these associaltions > > [code]class Iso3166Country < ActiveRecord::Base > has_many :locations, :foreign_key: :id
What is the foreign_key spec here supposed to be doing? > end > [/code] > > [code]class IpGroupCity < ActiveRecord::Base > has_one :locations, :foreign_key => :id If you really mean has_one then it should be :location (singular). I suspect you mean belongs_to however since you have location has_many IpGroupCities below. Again what is the foreign_key spec for? > end > [/code] > > [code]class Location < ActiveRecord::Base > has_many :ip_group_cities, :foreign_key => :location Again I do not understand the foreign key spec > belongs_to :iso3166_countries, :foreign_key => :country_code > end > [/code] > > But when i run this code > > [code] > C = Location.find(1); You would be better to use lower case C. > [/code] > > It does not show me the columns from the other tables... I mean i dont > see a name column from the Iso3166Countries table. Try C.iso3166_country. It will not fetch the association data until you ask. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
