what's wrong in this seed.rb?

rubyonrails-talk
1

lines = FasterCSV.read(Rails.root.join('public', 'data', 'negozi.csv')) lines.slice!(0) lines.each do |row|   if row.any?     begin       role_date = Date.strptime("#{row[4]}", "%d/%m/%Y")       reference_date = Date.strptime("#{row[6]}", "%d/%m/%Y")     rescue       reference_date = role_date = nil # se la data non e' valida inserisci un valore nullo     end     shop = Shop.create!(:role_number => row[3], :role_date => role_date, :name => row[7], :ssn => row[8],                 :nationality => row[9], :address => "#{row[10]} #{row[11]}", :street_number => row[12],                 :website => row[24], :district => row[13], :sector => row[15],                 :square_meters => row[16], :state => row[2],                 :notes => row[22])     shop.documents.create!(:reference_number => row[5], :reference_date => reference_date,                 :subject => row[14])

rake db:seed Then I open console: rails c and I do shop=Shop.where(:role_number => '5') shop.documents I have method missing documents error. Why?

2

Shop has_many :documents and Document belongs_to :shop

3

Are you sure that Shop.where(:role_number => ‘5’) is returning only one record?

What’s the output of this:

puts Shop.where(:role_number => ‘5’).class

4

shop=Shop.where(:role_number => '5') shop.documents I have method missing documents error. Why?

Are you sure that Shop.where(:role_number => '5') is returning only one record?

What's the output of this:

puts Shop.where(:role_number => '5').class

ActiveRecord::Relation

5

Actually, it doesn’t matter. I just rememebred where() is always going to return and ActiveRecord::Relation instance, not an instance of your model.

You’ll need to access one of the model instances to be able to see the documents:

shops = Shop.where(:role_number => ‘5’) shops[0].documents

6

Ah ok. shop=Shop.find_by_role_number(5)

now shop.documents works. Thank you.