RJS and javascript objects problem

Rails
1

Hi,

I’ve got a js object on my page named appts which has a method render().
My problem is when i use RJS to call “appts.render()”. it doesn’t do
anything at all. There are no errors also displayed.

here is my rjs code:

page << “appts.render(‘BG’,0);”

help would be much appreciated:)

thanks

2

On 19 October 2006 12:24, franee – wrote:

I’ve got a js object on my page named appts which has a method render().
My problem is when i use RJS to call “appts.render()”. it doesn’t do
anything at all. There are no errors also displayed.

here is my rjs code:

page << “appts.render(‘BG’,0);”
Here is the problem resolution sequence:

  1. Turn on browser’s javascript debugging (e.g. in Firefox take a look
    at
    javascript console or install a powerful FireBug extension). You’ll see
    all
    the javascript errors.
  2. Examine javascript code that is generated by RJS template. Make sure
    that
    it contains no errors (you can view RJS response in FireBug’s console).
  3. Make sure that the RJS response is properly evaled. E.g. in
    Ajax.Request
    there should be evalScripts options set to true.
  4. Make sure that you don’t overwrite RJS response’s content type and it
    is
    equal to “text/javascript” (you can view RJS response in FireBug’s
    console).

Hope that helps

3

Maxim K. wrote:

On 19 October 2006 12:24, franee – wrote:

I’ve got a js object on my page named appts which has a method render().
My problem is when i use RJS to call “appts.render()”. it doesn’t do
anything at all. There are no errors also displayed.

here is my rjs code:

page << “appts.render(‘BG’,0);”
Here is the problem resolution sequence:

  1. Turn on browser’s javascript debugging (e.g. in Firefox take a look
    at
    javascript console or install a powerful FireBug extension). You’ll see
    all
    the javascript errors.
  2. Examine javascript code that is generated by RJS template. Make sure
    that
    it contains no errors (you can view RJS response in FireBug’s console).
  3. Make sure that the RJS response is properly evaled. E.g. in
    Ajax.Request
    there should be evalScripts options set to true.
  4. Make sure that you don’t overwrite RJS response’s content type and it
    is
    equal to “text/javascript” (you can view RJS response in FireBug’s
    console).

Hope that helps

I had already 1-4 covered. Here is the actual code that was spit on the
debugger:

try {
appts.render(‘BG’,0);
} catch (e) { alert(‘RJS error:\n\n’ + e.toString());
appts.render(‘BG’,0);’); throw e }

There is no exception when this gets executed but the object doesn’t do
anything. when i do --> page << “alert(appts);”, i get this --> [object
Object]

any more ideas?

4

On 19 October 2006 14:19, franee – wrote:

Object]

any more ideas?

  1. Try putting alert inside render() method to see if it actually get
    execute.
    If it is, then the problem is in your code, otherwise
  2. Try exploring all “appts”'s object properties:

function inspect(o) {
var result = “Object “+o+” {\n”;
for(attr in o) {
result += “”+attr+" = “+o[attr]+”\n";
}
result += “}\n”;
return result;
}

Put this function into some place from where it could be loaded before
RJS
call (e.g. RAILS_ROOT/public/javascripts/application.js if you use
javascript_include_tag :defaults) and then in RJS do "page
<< “alert(inspect(appts));”

It might be that you’ve got wrong object.

5

Maxim K. wrote:

On 19 October 2006 14:19, franee – wrote:

Object]

any more ideas?

  1. Try putting alert inside render() method to see if it actually get
    execute.
    If it is, then the problem is in your code, otherwise
  2. Try exploring all “appts”'s object properties:

function inspect(o) {
var result = “Object “+o+” {\n”;
for(attr in o) {
result += “”+attr+" = “+o[attr]+”\n";
}
result += “}\n”;
return result;
}

Put this function into some place from where it could be loaded before
RJS
call (e.g. RAILS_ROOT/public/javascripts/application.js if you use
javascript_include_tag :defaults) and then in RJS do "page
<< “alert(inspect(appts));”

It might be that you’ve got wrong object.

Thanks for the info. I think there’s something wrong with the js object
or with RJS itself with complex objects. Its a pretty complex one which
has multiple objects inside it.

appts contains an array of appointment objects. each appointment object
also contains a hash of measurement objects.

when i call this on the page -->

document.write(inspect(appts.appts[1].mds[‘BG’]));

it writes the contents of the object to the screen.
but when i call the same thing inside the rjs template, it says Object
undefined. pretty weird.