Rails - Aug 2009 - Checking whether or not scripting is enabled or disabled

I''m turning my head around and around on this topic and not many
searches on the web turn up what I need to do.  Here''s the simple
issue:

I have an ajax search form that is activated via checkbox/observer:

<%= check_box "search", "info" %>
<%= observe_field(:search_info, :on=>''click'',
:frequency=>0.25, :update
=> :form_container, :with => :search_info, :url => { :action =>
:search_form }) %>
<div id="form_container"></div>

If they check the box, the search_form action renders the search form:

def search_form
  validate_date_form
  if params[:search_info] == "null"
    render :text => ""

  else
    render :partial => "search"
  end
end

All I want to do is degrade to a normal render if the user has scripting
disabled.  So, if scripting is disabled, the search form should be
rendered always.  If not, then only rendered on checkbox.

How can I do this?

I''m using prototype/scriptaculous so I thought it might have to do with
providing a check with if request.xhr? is true or not...

Any help would be appreciated.
-- 
Posted via http://www.ruby-forum.com/.

Hi Joel,
On Mon, 2009-08-03 at 01:04 +0200, Alpha Blue wrote:
> All I want to do is degrade to a normal render if the user has scripting
> disabled.  So, if scripting is disabled, the search form should be
> rendered always.  If not, then only rendered on checkbox.
> 
> How can I do this?
This is what render |format| is about.

HTH,
Bill

There''s a dozen topics on render .. something, none of which talks
about
the issue I''m having.  Anyone else want to explain how I can accomplish
this that can provide more than 7 words?

Many thanks in advance.

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

On Aug 3, 2:12 am, Alpha Blue
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> There''s a dozen topics on render .. something, none of which talks
about
> the issue I''m having.  Anyone else want to explain how I can
accomplish
> this that can provide more than 7 words?
>
Instead of loading the form via an ajax request, make it part of the
initial page. When the page loads, executes some javascript that hides
the search form. If javascript is disabled then that code doesn''t run
and so the form isn''t visible, if it is enabled then it will be
hidden.

Fred
> Many thanks in advance.
>
> --
> Posted viahttp://www.ruby-forum.com/.

Hi Fred,

Thanks mate.  I hadn''t thought of a backwards compatible type of an 
approach.  I''ll see what I can do.

Take care.

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

Fred, thanks for the help.  I was able to do:

<%= check_box "search", "info" %>
        <%= observe_field(:search_info, :on=>''click'',
:frequency=>0.25,
:update => :form_container, :with => :search_info, :url => { :action
=>
:search_form }) %>
        <% controller.response.content_type = Mime::HTML%>
        <div id="hide_container"><%= render :partial =>
''search''
%></div>
        <div id="form_container"></div>
        <%= javascript_tag render( :partial =>
''hide_div.js.rjs'') %>

And then in the rjs partial I placed:

page.hide :hide_container

This allowed the search partial to be displayed in the div id for 
hide_container which is viewable by those without ajax/scripting 
enabled.  And the render for rjs hides that partial and the 
checkbox/observer still allows the form to be viewed click/unclick.

It looks fairly clean.

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

For clarity in case someone else finds this topic, the final fixes were:

_hide_div.js.rjs

page.hide :hide_container
page.show :show_checkbox

index.html.erb

<div id="show_checkbox" style="display:none;">Advanced
Search <%=
check_box "search", "info" %></div><br>
<%= observe_field(:search_info, :on=>''click'',
:frequency=>0.25, :update
=> :form_container, :with => :search_info, :url => { :action => 
:search_form }) %>
<div id="hide_container"><%= render :partial =>
''search'' %></div>
<div id="form_container"></div>
<%= javascript_tag render( :partial =>
''hide_div.js.rjs'') %>
<% controller.response.content_type = Mime::HTML%>

This automatically hides the "Advanced Search []" and checkbox for
those
with javascript disabled.  These are re-enabled by page.show 
:show_checkbox which applies to the div id="show_checkbox.

The page.hide :hide_container then hides the div for div 
id="hide_container" from view for people that use ajax.

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