Acts_as_versioned only for certain fields?

Rails
1

acts_as_versioned is a GREAT plugin. Having trouble only versioning
specific fields however. Most of my fields will never change so it is a
waste to store the same data over and over in all the versions. The docs
say “the _versions table should contain all the fields you want
versioned”. I’ve done that – the fields that I don’t want versioned are
not in the _versions table. I get an error when I try to save though.
Any ideas?

Example:

class Picture < ActiveRecord::Base
belongs_to :style
acts_as_versioned
end

@picture = Picture.find(1)
@picture.caption = ‘A new caption that should be in a new version.’
@picture.save

Then I get: NoMethodError: undefined method `style_id=’ for
#Picture::Version:0x3109e58

style_id will never change though (or I don’t care if its changes are
versioned) so I did not include it in the picture_versions table.

Thanks very much.

2

On 1/23/07, Carl J. [email protected] wrote:

#Picture::Version:0x3109e58

style_id will never change though (or I don’t care if its changes are
versioned) so I did not include it in the picture_versions table.

Thanks very much.

class Picture < AR::Base
acts_as_versioned
non_versioned_columns << ‘style_id’
end

–
Rick O.
http://weblog.techno-weenie.net
http://mephistoblog.com

3

On 1/24/07, Carl J. [email protected] wrote:

class Picture < AR::Base
acts_as_versioned
non_versioned_columns << ‘style_id’
end

Ahh, I see! I saw that referenced on the rails wiki but it was unclear.
Thanks!!

in your rails app directory type:

$ rake doc:plugins

Then open doc/plugins/acts_as_versioned/index.html in your browser.

–
Rick O.
http://weblog.techno-weenie.net
http://mephistoblog.com

4

class Picture < AR::Base
acts_as_versioned
non_versioned_columns << ‘style_id’
end

Ahh, I see! I saw that referenced on the rails wiki but it was unclear.
Thanks!!