I have a rails class that serializes one attribute.
class Statistic < ActiveRecord::Base
serialize :userlist
end
When a statistic object is loaded and it's userlist changed from a
String to an Array userlist always gets serialized back into a String.
Objects that are properly deserialized into Arrays stay that way. The
framework seems to remember and deserialize :userlist into a String
even if it went in as an Array.
>> s = Statistic.find 238
=> #<Statistic id: 238, userlist: "--- \n- 2222437\n- \"99779\"\n-
\"120429\"\n- \"210503\"\n- 32...">
# Note here: :userlist is an Array in YAML. Why doesn't it get
correctly deserialized?
>> s.userlist.class
=> String
>> s.userlist = s.userlist.split(/\s+/)
>> s.userlist.class
=> Array
>> s.save
=> true
>> s.reload
=> #<Statistic id: 238,userlist: "--- \n- 2222437\n- \"99779\"\n-
\"120429\"\n- \"210503\"\n- 32...">
>> s.userlist.class
=> String
The goal of this exercise is to convert all String userlists to Array.
If I change the class (serialize :userlist, Array) before converting I
get TypeMismatch exceptions.
ActiveRecord::SerializationTypeMismatch: userlist was supposed to
be a Array, but was a String
Is there a way to force AR to interpret userlist as an Array?
% rails --version
Rails 2.3.4
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