Hi, I have a new ad_form question. I love ad_form, but it doesn't do as I want. The following bombs, so how can I dynamically choose the type of widget, as in this example, or the datatype, etc?

The documentation for ad_form says this, which I don't understand very well:

In order to make it possible to use ad_form to build common form snippets within procs, code blocks are executed at the current template parse level. This is necessary if validate and similar blocks are to have access to the form's contents but may cause surprises for the unwary. So be wary. On the other hand when subst is called, for instance when setting values in the form, the caller's level is used. Why do this? A proc building a common form snippet may need to build a list of valid select elements or similarly compute values that need to be set in the form, and these should be computed locally.

if $some_condition_p {
    set widget text
} else {
    set widget inform
}

ad_form -form {
    test_id:key

    {test:text($widget)                   {label "Test"}
	{value {This is a test}}}
}

....

Does anyone know ad_form well yet, except Don?

Thanks,

If you want variable interpolation you need to build up the
list with list calls like:

-form [list my_table_key:key(my_table_sequence) [list "test:test($widget)" {label "Test"} ... ] ]

Only caveat is that I have not really used ad_form and the function is too large to actually understand :)

{} is list but without any variable interpolation. Chapter 10 of Brent Welch's book is a good place to read about this. see http://www.beedub.com/book/3rd/Eval.pdf