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  1. Mongoid
  2. MONGOID-2152

Custom field value serializer not working?

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    • Type: Icon: Task Task
    • Resolution: Done
    • 3.0.0
    • Affects Version/s: None
    • Component/s: None
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      Following the docs at http://mongoid.org/en/mongoid/docs/documents.html regarding custom field serialization, I came up with a type class. But it seems as though none of the serialization methods are being called.

      See the following test case. I expect the value stored in the bar field to have an exclamation mark appended to it per the #mongoize implementation. That's not happening, so I can surmise that the mongoize method isn't being called.

      I can't tell if this is a documentation problem, a bug, or more likely something I'm doing wrong...

      require 'test/unit'
require 'mongoid'

class TestType < Test::Unit::TestCase
  def test_value_mongoized
    foo = Foo.create(bar: 'baz')
    assert_equal 'baz!', Foo.collection.find({_id: foo.id}).first['bar']
  end
end

Mongoid.sessions =  { default: { database: 'test', hosts: ['localhost:27017'] } }

#
# Custom field type 
#
class Baz
  attr_reader :val

  def initialize(val)
    @val= val
  end

  # Add an exclamation mark to serialized value
  def mongoize
    "#{val}!"
  end
  
  # Remove exclamation mark from serialized value
  class << self
    def demongoize(obj)
      Baz.new(obj.gsub('!', ''))
    end

    def evolve(obj)
      if obj.is_a?(Baz)
        obj.val
      else
        obj
      end
    end
  end
end

#
# Mongoid Document
#
class Foo
  include Mongoid::Document
  field :bar, type: Baz
end

            Assignee:
            Unassigned Unassigned
            Reporter:
            alexkwolfe Alex Wolfe
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              Created:
              Updated:
              Resolved: