Rails - Sep 2007 - Replace content in a div on prototype observe_field update?

For:

<%= observe_field :division_filter_id,
         :frequency => 0.5,
         :update => ''ajaxJobListWrapper'',
         :url => {:action => ''update_job_list'' },
         :with => ''division_id'',
         :position => :top %>

where ajaxJobListWrapper is a div and update_job_list renders a
partial, is there any way to REPLACE the current ajaxJobListWrapper
div content by the content returned by the update_job_list action?

The content returned by update_job_list as used above places the
returned content above the existing content.  I would like to replace
it.  I''ve tried all of the positions.  Any ideas on an approach for
how to do this?

Thanks.


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Hi athem,

athem wrote:
> <%= observe_field :division_filter_id,
>          :frequency => 0.5,
>          :update => ''ajaxJobListWrapper'',
>          :url => {:action => ''update_job_list'' },
>          :with => ''division_id'',
>          :position => :top %>
>
> where ajaxJobListWrapper is a div and update_job_list renders a
> partial, is there any way to REPLACE the current ajaxJobListWrapper
> div content by the content returned by the update_job_list action?
Use page.replace in an RJS template rather than the :update option on
observe_field.  I highly recommend Cody Fauser''s PDF on
O''Reilly, ''RJS
Templates''.  Ten bucks well spent.

HTH,
Bill



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Thanks very much for the tip on Cody Fauser''s PDF on RJS Templates.
Using the following in list.rhtml to observe a dropdown listbox:

<%= observe_field :division_filter_id,
             :frequency => 0.5,
             :url => {:action => ''update_job_list'' },
             :with => ''division_id''
%>

and the div I''m trying to replace (it renders the partial when
list.rhtml is first displayed)

<div id=''ajaxJobListWrapper''>
    <%= render :partial=>''job_listings'' %>
</div>

I tried using:

page.replace_html ''ajaxJobListWrapper'', :partial =>
''job_listings''

in update_job_list.rjs, but had the same problem: the content returned
from the partial job_listings appeared is added to the existing
content (instead of the select filtering the list, when clicked,
content is added).

When I tried using:

page.replace ''ajaxJobListWrapper'', :partial =>
''job_listings''

this seems correct (it would seem that the content of the div needs to
be REPLACED in the DOM), but triggers the following RJS error:

TypeError: Element.replace is not a function

I don''t expect to have my code debugged here, but I''m
completely new
to RJS and thought I might have misunderstood the advice given above.
Any advice on this error would be appreciated.  I need to dig more
deeply into RJS.  Thanks for everyone''s help.


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