With thanks to "themiddleman" and "agnaki" somewhere out there in the
ether, I have solved the problem:-
Use respondToChange not respondToChange()
As the parensthesis () execute the function wheras without () it
references it.
$('search').observe('change', respondToChange()); only triggers when
the focus is moved away from the text_field.
new Form.Element.Observer(
'search',
1,
respondToChange()
) }); ................................repeatedly checks the text_field
and call the function every 1 second if there is a any change.
I now only have one small problem.
How to call the "form_tag" from the function.
Anyone have any ideas.
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