mongoid random from controller

Question

is It possible get a shuffle/random of a collection from action in controller.

def action
 #pseudocode something like the next:
 @objects = Object.random
 respond_to do |format|
  format.html
 end
end

I now can get shuffle from my view, with:

<% @objects.shuffle.each do |microfunc| %>
.
.
.
<% end %>

On view is possible with each or for loop. I don't want use loop to get random Object from one collection.

How can I get random objects inside Mongoid::Criteria from my action controller?

score 0 · Accepted Answer · edited May 23 '17 at 12:21

0

There isn't a great way. Your choices:

Store an integer for each document and get by its value: http://cookbook.mongodb.org/patterns/random-attribute/
use 'skip' which is inefficient: Mongoid random document

edited May 23 '17 at 12:21

Community

answered Jan 23 '13 at 19:53

Jesse Wolgamott

Thank you, but can you paste a example with mongoid? Thank you very much! – hyperrjas Jan 23 '13 at 20:00
Those are both either mongoid or mongo – Jesse Wolgamott Jan 23 '13 at 20:10

1 Answers1