Difference in render and render :update

I have a situation where i am using extjs for my tab layouts.
When i am getting a tab to be loaded i am making a call to a method and
from there i do
if(some condition)
render :partial=>‘x’
else
render :partial=>‘y’
end

When partial ‘x’ is rendered, upon some successful completion of an ajax
call i then render partial ‘y’ by doing

render :update do |page|
page.replace_html ‘div_id’, :partial=>‘y’
end

Now the issue is in partial ‘y’ i have an observer and it gets fired if
am coming to that partial from x and then y. But if i come to the y
partial straightaway the observer is not getting fired at all.

Can someone help me with what could be the difference that is not
letting the observer to fire.

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs