Labeled fixtures for associations in Rails 3 broken

问题

After upgrading to Rails 3, fixtures that refer to other labelled fixtures (for relationships) stop working. Instead of finding the actual fixture with that name, the fixture label is interpreted as a string.

Example:

# Dog.yml

sparky:
  name: Sparky
  owner: john

# Person.yml

john:
  name: John

Where Dog "belongs to" person.

The error message is:

SQLite3::SQLException: table dogs has no column named 'owner'

回答1:

Try

# Dog.yml

sparky:
  name: Sparky
  owner: john (Person)

# Person.yml

john:
  name: John

See the "polymorphic belongs_to" section of http://api.rubyonrails.org/classes/Fixtures.html

回答2:

try this:

sparky:
  name: Sparky
  owner: john (Person)

来源：https://stackoverflow.com/questions/3026654/labeled-fixtures-for-associations-in-rails-3-broken