I have a text field. It starts with an initial value from the
database. If it changes, I save it to the database. This works via
observe_field. The field cannot be blank, so if someone deletes the
contents of the field, I don''t save that value.
However, I also want to reset the field to the previous value (initial
value or previously saved value) and not leave it blank.
I have code to do this once. But if the field is emptied a second
time, I cannot get the handler to refresh the field.
Any ideas why it does not work the second time? Or perhaps it is
working but putting in a null value?
<%= observe_field(
field,
:url => { :action => ''update''},
:update => ''message'',
:with => field,
:condition => "check(this)"
)
%>
<%= observe_field(
field,
:with => field,
:function => "refresh(this)"
)
%>
function check( input ) {
var v = trim( input.getValue() );
if (! v ) {
return false;
}
return true;
}
function refresh( input ) {
input.element.value = input.element.lastValue;
input.element.visualEffect( "highlight",
{duration: 2.5, queue: ''end''} );
}
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