Where are the doc. for "render :update do |page|"?

Rails
1

Hi,

I found out there is a new parameter for the “render” function, but I
couldn’t find any information or documentation on it, specically on what
we can do with |page|, there are examples on the new book “agile Web
Development with rails”, but it doesn’t contains any information about
it, like: on p.559

…
render :update do |page|
page.replace_html ‘pending_todos’, :partial => ‘pending_todos’
page.replace_html ‘completed_todos’, :partial => ‘completed_todos’
page.sortable “pending_todo_list”, :url
=>{:action=>:sort_pending_todos, :id =>@user}
end
…

why |page| can call “replace_html” and “sortable”, is |page| a
ruby-rails objet? or javascript obj? or user defined obj???

does some one know where can I find the documentation???

Thanks you very much

Sayoyo

2

sayoyo wrote:

render :update do |page|

Google RJS, standing for Remote JavaScript. Also get ARTS with
assert_rjs

And note that ‘page’ is a poor choice for a variable name - especially
a published one - because the web already has too many pages…

–
Phlip
http://c2.com/cgi/wiki?ZeekLand ← NOT a blog!!

3

sayoyo wrote:

Hi,

I found out there is a new parameter for the “render” function, but I
couldn’t find any information or documentation on it, specically on what
we can do with |page|, there are examples on the new book “agile Web
Development with rails”, but it doesn’t contains any information about
it, like: on p.559

…
render :update do |page|

This was confusing for me too at first. It’s an instance of the
JavaScriptGenerator class:
http://api.rubyonrails.com/classes/ActionView/Helpers/PrototypeHelper/JavaScriptGenerator/GeneratorMethods.html

And if you’re going to use the page.visual_effect method, more info
about that is here:
http://api.rubyonrails.com/classes/ActionView/Helpers/ScriptaculousHelper.html

I think |page| is often used instead of |generator| to help you think
about what you’re doing to the web page, and worry less that you just
happen to be doing that indirectly by generating javascript.

Jeff

4

On 1/22/07, sayoyo [email protected] wrote:

And if you’re going to use the page.visual_effect method, more info

–
Posted via http://www.ruby-forum.com/.

–
James Hearn

5

Hi, thanks you very much for the information!!!

This was confusing for me too at first. It’s an instance of the
JavaScriptGenerator class:
Peak Obsession

And if you’re going to use the page.visual_effect method, more info
about that is here:
Peak Obsession

I think |page| is often used instead of |generator| to help you think
about what you’re doing to the web page, and worry less that you just
happen to be doing that indirectly by generating javascript.

Jeff
softiesonrails.com