Dynamic Columns with headers

[JoshuaNovak919]

Is there a way to make a block build columns with custom headers. For example i have users that have associated groups. I'd like to be able to cycle through each group and make that a column header and put an X in the column if the user has that group. New groups can be added so making a ton of custom methods seems very inefficient if i can just make one that can handle all of them.

-Thanks

[eitoball]

Maybe, you could do with __static_column__ like:

class User < ActiveRecord::Base
  belongs_to :group

  comma do
    Group.all.each do |group|
      __static_column__ group.name do |user| user.associated?(group) ? 'X' : '' end
    end
  end  
end

I am not sure if this works...

It is not possible to add columns dynamically, so you have to restart your application when another group is added.

[JoshuaNovak919]

This worked like a charm. Thanks!! Also, it seems that i don't need to restart the application when the group changes, at least not locally. Is there a way we can add this into the documentation, it would probably be helpful to others.

[eitoball]

Also, it seems that i don't need to restart the application when the group changes, at least not locally. Is there a way we can add this into the documentation, it would probably be helpful to others.

Yeah, comma block is evaluated whenever #to_comma is called. So, it will pick up changes in groups table.

You can fork this project, edit README.markdown file, and send pull-request.