AssociationTypeMismatch got Fixnum

An
Mon, 02 Feb 2009 10:49:30 -0000

I''m using rails 2.0.5 and mongrel.

I have a Page and a Source models.

class Source < ActiveRecord::Base
  has_many :pages
end

class Page < ActiveRecord::Base
  belongs_to :source
end

Basically I''m listing pages with their sources; In production and
development ( I use mongrel_cluster in the first and a single mongrel
on the second) I got this error:

ActiveRecord::AssociationTypeMismatch (Source expected, got Fixnum):
    /vendor/rails/activerecord/lib/active_record/associations/
association_proxy.rb:150:in `raise_on_type_mismatch''
    /vendor/rails/activerecord/lib/active_record/associations/
belongs_to_association.rb:22:in `replace''
[...]

The fact that scares me  *a lot* is that I get it on random basis and
reloading the page solves it.
It looks like that sometimes the record isn''t retrieved correctly from
the db but instead it got a fixnum.


The fact that is a random behaviour doesn''t give me any clue on how to
solve it.
Any idea?