Re: [Hobo Users] AJAX expandos

[Ignacio Huerta]

Hi Bryan,

Thank you very much the idea: I just tested the code and it works
beautifully :D. The only thing I had to change was the destiny route of
the form:

This is the original code that crashes in my app: 
   <form action="show" update="expando">

After some testing, I discovered that this worked: 
   <form action="/projects/show/53" update="expando">

Ok, it works, but the route is hardcoded. So I found a solution:
   <form action="&@project.route" update="expando" >

And I defined "route" in the projects model:
  def route
    return '/projects/show/' + id.to_s
  end


Maybe someone has a suggestion to build the route string inside the tag
definition, so the code is less dirty.

Regards,
Ignacio

El lun, 15-11-2010 a las 15:00 -0500, Bryan Larsen escribió:
> This is prompted by this feature request from Peter Ehrlich: 
> https://hobo.lighthouseapp.com/projects/8324/tickets/841-load-tags-through-ajax
> 
> Expandos are those little web 2.0 widgets expand to show additional 
> content when clicked.   Usually they're implemented in pure Javascript, 
> and are easy to do.   For an example in jQuery, see this 
> http://jqueryui.com/demos/accordion/ under the warning "If you wnat 
> multiple sections open at once, don't use an Accordion".
> 
> However, if your content is very large or expensive, you may want to 
> delay sending the content until the user actually clicks on the expando. 
>    Hobo doesn't have an expando tag, but it's easy to use a hobo AJAX 
> form to do this.
> 
> For example, in your show.dryml, you could have something like this:
> 
>     <div part="expando"/>
>      <if test="&params[:opened]=='opened'">
>        <form action="show" update="expando">
>          <input type="hidden" name="opened" value="closed"/>
>          <submit label="close">
>        </form>
>        big expensive content here.
>      </if>
>      <else>
>        <form action="show" update="expando">
>          <input type="hidden" name="opened" value="opened"/>
>          <submit label="open">
>        </form>
>       </else>
>      </div>
> 
> hobo_show doesn't normally include ajax support, so you'll have to add it:
> 
>      def show
>        hobo_show do
>          hobo_ajax_response if request.xhr?
>        end
>       end
> 
> I haven't actually tested this code, so it may need some tweaks, but 
> hopefully somebody finds it useful.   (And if you do get it working, it 
> would probably make a good recipe).
> 
> Bryan
> 

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