Hey,

For a while now, I am thinking about implementing a feature into Rails.
Since it's not a simple single liner, I thought I should get feedback on it 
and maybe some guidelines before I continue on with coding it.

The feature I would like to implement is nil_object pattern.

Here's some code for example

https://gist.github.com/3655723

As you can see, the post belongs to a user and I am printing out the user 
display name for every post.

This is a pretty common thing in every rails app I ever saw, some preload, 
some let it go N+1 without caring.

The problem is, that if you don't have the user in the database, the view 
code will fail on NoMethodError for NilClass.

To Avoid this here's what I want to do:

https://gist.github.com/3655751

This way, if the database has no record for that user, it will load the 
nil_user class and the code will now break.

This can come in handy not only for the belongs_to but for the has_one 
relation as well.

So... This is the feature I want to implement, thoughts? feedback? 
guidelines?

-- 
You received this message because you are subscribed to the Google Groups "Ruby 
on Rails: Core" group.
To view this discussion on the web visit 
https://groups.google.com/d/msg/rubyonrails-core/-/BXbYp3KnUY0J.
To post to this group, send email to rubyonrails-core@googlegroups.com.
To unsubscribe from this group, send email to 
rubyonrails-core+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/rubyonrails-core?hl=en.

Reply via email to