Rails doesn't deserialize array back

Question

I have a problem with serialization. In my model I have

class PramEntry < ActiveRecord::Base
  serialize :pram_units_array, Array
  attr_accessible :pram_units_array
end

then I do

entry = PramEntry.new
entry.pram_units_array = [PramUnit.new(depth: 1, width: 1)]

entry.pram_units_array 
=> [#<PramUnit:0x007fb368eb8ae8 @depth=1, @width=1>]
entry.save
=> true

but then I load this object from database

entry = PramEntry.first
entry.pram_units_array
=>  "---\n- &70364639756800 !ruby/object:PramUnit\n  depth: 1\n  width: 1\n  errors: !ruby/object:ActiveModel::Errors\n    base: *70364639756800\n    messages: !omap []\n  validation_context: \n"

it doesn't serializes it back from yaml. What I am doing wrong? Thanks in advance!

Pavel · Accepted Answer · 2013-11-28 20:53:51Z

1

I found Answer to my question.

I've tried to deserialize manualy

YAML::load(PramEntry.last.pram_units_array)
=> ArgumentError: undefined class/module PramUnit

PramUnit is a ruby class in lib folder. I required it

require 'pram_unit'

even when I autoload files from lib.

 config.autoload_paths += Dir["#{config.root}/lib/**/"]

It was very strange behavior for me. But problem was resolved :)

answered Nov 28, 2013 at 20:53

Pavel

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