Datamapper DataMapper

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  ojak October 19th, 2009 @ 06:53 PM

  • Title changed from “Json type fails to mark as dirty after changes (save returns true without DB update).” to “Json type / Hash assignment fails to mark attribute as dirty.”
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  Dan Kubb (dkubb) February 2nd, 2010 @ 12:41 PM

  • State changed from “new” to “unconfirmed”
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  Piotr Solnica (solnic) February 19th, 2010 @ 07:47 AM

  Have you ever considered this case? It's something I also have faced when I added support for Hash and Array as the property type. It's an interesting challenge to have it working correctly. Any ideas how we could approach that?

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  Collin April 20th, 2010 @ 10:52 AM

  I have the same problem when serializing hashes in DM.

  An interesting case I've run into is this:

  I'm doing some serialization work and I thought I could keep a reference to the record in the attribute object.

  "@record = record"

  But this does not work because now the object cannot be serialized by marshal. Not quite sure what to do about this.

  module Fauxsql

  # Attribute is a mixin for AttributeList and AttributeMap classes.
  # It should be mixed into classes that inherit standard Ruby data structures(Hash, Array, Set, etc.)
  module Attribute
    def initialize(record, name)
      super() # explicitly super without arguments to preserve base behavior
      record.fauxsql_attributes[name] = self
      @record = record # THIS DOES NOT WORK
    end
  end
  

  end

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  Collin April 20th, 2010 @ 01:39 PM

  I've figured out a way to do this in my library.

  It's here in the "dirty!" method.
  http://github.com/collin/fauxsql/blob/master/lib/fauxsql/attribute_...

  Also, "dirty!" in action:
  http://github.com/collin/fauxsql/blob/master/lib/fauxsql/map_wrappe...

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  Dan Kubb (dkubb) May 22nd, 2010 @ 01:05 AM

  • State changed from “unconfirmed” to “confirmed”

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  buhrmi (at gmail) January 3rd, 2011 @ 07:27 AM

  • Milestone order changed from “0” to “0”

  I came up with a hacky monkey patch to add a similar method to DataMapper::Resource.

  https://gist.github.com/763374