Difference between render :update & remote_form_for :update

Rails
1

Can anyone explain what the difference is between using “render :update”
and using remote_form_for with :update set?

A recent post suggested that the difference between these two methods is
whether Ajax.Request or Ajax.Updater was called and that Ajax.Updater
was twice as fast. How much truth is there to this? Thanks in advance.

Scott

2

Scott wrote:

Can anyone explain what the difference is between using “render :update”
and using remote_form_for with :update set?

render :update runs an RJS template (which could do a variety of things
to a web page) while remote_form_for with :update will just update a
specific element with the response from an action. Speed is probably
irrelevant in this case.

Eric