Julius,
Javascript has a built in restrictions at two levels. 1) Do not permit
client side file access. 2) Accept only data from the originating DOM
source. Both are designed for security protections.
Using the ajax call as Massimo defined it permits the state in the
current form to change so that the appropriate dialog can be displayed
and still conforms to the javascript security model.
On Jul 10, 12:34 pm, Julius Minka <j...@minka.sk> wrote:
> Massimo,
> I can see following:
>
> 1. in Jquery documentation:
> html(val)
> Set the html contents of every matched element. This property is not
> available on XML documents (although it will work for XHTML documents).
>
> 2. in current svn trunk in web2py_ajax.html something like this:
> function ajax(u,s,t) {
> var query="";
> for(i=0; i<s.length; i++) {
> if(i>0) query=query+"&";
>
> query=query+encodeURIComponent(s[i])+"="+encodeURIComponent(document.getElementById(s[i]).value);
> }
> jQuery.ajax({type: "POST", url: u, data: query, success:
> function(msg) { if(t==':eval') eval(msg); else
> document.getElementById(t).innerHTML=msg; } });
>
> }
>
> BUT:
> I still do not understand, how it should help me to call javascript
> function from controller.
> Can you please explain it more?
> Julius
>
> mdipierro wrote / napísal(a):
>
> > With the latest trunk you can do
>
> > <intput name="value" id="value" />
> > <button onclick="ajax('callback',['value'],':eval')">click me</button>
> > <div id="target"></div>
>
> > def callback():
> > value=request.vars.value
> > return "jQuery('#target').html(%s)" % repr(str(value))
>
> > when you click the button it sends the value of value to the callback
> > function. The function returns a jQuery string and the clients runs
> > it. The trick here is ajax(...,':eval') which is defined by web2py.
>
> > On Jul 10, 8:56 am, Julius Minka <j...@minka.sk> wrote:
> >> Hi all,
>
> >> I have a javascript function in html file which is usually called from
> >> onclick event in the same file. It works fine.
> >> However I would like to call this javascript function from a controller.
>
> >> More precise description:
> >> after clicking an element in the page, the flow goes to controller.
> >> There I decide which dialog to display (I have it working to this
> >> point), but it is defined again in html file as jquery dialog opening
> >> with .dialog("open");
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