Thanks ...
I am looking at the
http://railscasts.com/episodes/229-polling-for-changes
this is quite obvious ( because it's async..) ... only the client
page can request periodic updates ...
On 10 mar, 15:28, Walter Lee Davis <wa...@wdstudio.com> wrote:
> On Mar 10, 2011, at 8:18 AM, Erwin wrote:
>
>
>
>
>
>
>
>
>
> > I trying to update multi times a page from inside a loop, obviously
> > the loop cannot be outside the update block
>
> > as a test I wrote :
>
> > def reloading
> > @tables = ["table_lockers", "table_instructors", "table_members",
> > "table_analyses"]
> > render :update do |page|
> > @tables.each do |table|
> > page.insert_html :bottom, 'table_list', "<li
> > id='#{table}'>#{table}</li>"
> > page.visual_effect :highlight, "#{table}"
> > sleep 3
> > end
> > end
> > end
>
> > upon click on a start link remote Ajax call to the reloading action,
> > this intend
> > to insert the names of the tables one by one into a list area on the
> > displayed page... with 3 sec between each insertion :
>
> > <ul>table_list
> > table_lockers
> > table_instructors
> > table_members
> > table_analyses
>
> > this doesn't work as expected as the render id performed at the end of
> > the loop.... not in between
>
> This isn't going to work if you do it in Ruby. That's one request,
> which equals one render and one flush to the browser. You're going to
> have to refactor this so that the timer is in the JavaScript, and each
> request is for the next table. You'll have to work out some sort of
> semaphore between the ruby code (which knows how many of these things
> to do) and the JavaScript, which does not. One way would be to have
> the ruby code write an inline JavaScript block into the table code
> when it knows there are more to come, and omit it if not.
>
> Walter
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