On 24 May 2015 at 02:56, Elizabeth McGurty <emcgur...@gmail.com> wrote: > Okay... I am really trying to be super vigilant to best Ruby/Ruby on Rails > practices here... the whole n + 1 matter particularly > > I have a parent table called Advertiser: > > This is how it looks on the database: > > CREATE TABLE advertisers ( > advertiser_id varchar(40) NOT NULL,
If you are committed to the rails conventions then that should just be id, not advertiser_id. advertiser_id should be used in another table that belongs_to advertiser. > title varchar(50) NOT NULL, > category_id int(3) NOT NULL DEFAULT '99', > ... > class Advertiser < ActiveRecord::Base > > require 'uri' > > self.primary_key = 'advertiser_id' > attr_accessor :item_image_upload > has_one :item_image > has_one :category You have has_one category, but also a category_id in the table either it should be belongs_to category or the field should not be there. > ... > CREATE TABLE categories ( > category_id int(3) NOT NULL DEFAULT '99', > category_type varchar(50) NOT NULL, > KEY category_type_index (category_type) > ) ENGINE=MyISAM DEFAULT CHARSET=utf8; > > > Categories exists as category.rb, and this is the model: > > class Category < ActiveRecord::Base > > self.primary_key = 'category_id' > > belongs_to :advertiser > belongs_to :borrower > belongs_to :lender You need _id fields for each of the above. > ... > I am really committed to using best practices. What an I doing wrong? > I am not clear as to model requirement regarding look up values that are > user nonchangeable... The whole notion, for example, has_one with regard to > a look up is not clear to me. Have you worked right through a good tutorial such as railstutorial.org (which is free to use online), including all the exercises? That should help to make the basics of rails more clear. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CAL%3D0gLtQj6jz8%2Btd2rHnBGrKO%3Dtj6F9_r_QHqTwBh3if5XqLEw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
