When updating a page with RJS is can happen that an element to which observers are attached is exchanged with a new one. In my case, I have an observed select element that gets replaced when some other input element changes. When I replace the old select element with a new one, the new select element doesn't magically take over the observer(s) attached to the old one, therefore I have to explicitly attach an observer to the new one.
Surprisingly, there doesn't seem to be a way to do this purely within the confines of the JavaScriptGenerator. The best I've come up with is to insert the necessary JavaScript code manually, i.e.
page << "new Form.Element.Observer('my_select_element'," + " function(element, value) { ... });"
That doesn't feel right. Is there no better way, either of doing it without recourse to explicit JavaScript, or, better still, to keep observers automatically attached to elements by id even after they have been replaced.
Michael
