プロパティと所有者の関係が機能しているかどうかはわかりません。クエリを実行しようとすると、次のエラーが発生しました。
Loading development environment (Rails 3.2.13)
irb(main):001:0> Owner.find(1).properties
Owner Load (18.1ms) SELECT "owners".* FROM "owners" WHERE "owners"."id" = ? LIMIT 1 [["id", 1]]
Property Load (0.1ms) SELECT "properties".* FROM "properties" WHERE "properties"."owner_id" = 1
ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: 'House'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. Please rename this column if you didn't intend it to be used for storing the inheritance class or overwrite Property.inheritance_column to use another column for that information.
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/inheritance.rb:143:in `rescue in find_sti_class'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/inheritance.rb:136:in `find_sti_class'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/inheritance.rb:62:in `instantiate'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/querying.rb:38:in `block (2 levels) in find_by_sql'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/querying.rb:38:in `collect!'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/querying.rb:38:in `block in find_by_sql'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/explain.rb:41:in `logging_query_plan'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/querying.rb:37:in `find_by_sql'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/relation.rb:171:in `exec_queries'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/relation.rb:160:in `block in to_a'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/explain.rb:34:in `logging_query_plan'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/relation.rb:159:in `to_a'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/relation/finder_methods.rb:159:in `all'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/associations/collection_association.rb:382:in `find_target'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/associations/collection_association.rb:335:in `load_target'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/associations/collection_proxy.rb:44:in `load_target'
from /var/lib/gems/1.9.2/gems/activerecord-3.2.13/lib/active_record/associations/collection_proxy.rb:87:in `method_missing'
from /var/lib/gems/1.9.2/gems/railties-3.2.13/lib/rails/commands/console.rb:47:in `start'
from /var/lib/gems/1.9.2/gems/railties-3.2.13/lib/rails/commands/console.rb:8:in `start'
from /var/lib/gems/1.9.2/gems/railties-3.2.13/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
私のproperty.rbファイル：
class Property < ActiveRecord::Base
attr_accessible :owner_id, :p_city, :p_street, :postcode, :rent, :rooms, :type
belongs_to :owner
has_one :ticket
end
私の owner.rb ファイル:
class Owner < ActiveRecord::Base
attr_accessible :address, :f_name, :l_name, :tel_no
has_many :properties
end