Forum OpenACS Q&A: Response to ad_return

I finally got it. Actually my colleague helped me with it. But for some time I found that validations in the ad_page_contract kept on reurning "Zero sized Reply".

This is how my friend Mello programmed it.

set error_message " "
proc_doc ad_return_complaint {exception_count exception_text} "Return a page complaining about the user's input (as opposed to an error in our software, for which ad_return_error is more appropriate)" {
    global error_message
    if { $exception_count == 1 } {
	set problem_string "a problem"
	set please_correct "it"
    } else {
	set problem_string "some problems"
	set please_correct "them"
    }
    set error_message $exception_text
    ad_return_template /www/templates/error 
}

...where /www/templates/error is a template which displays error_message in a manner which conforms to our site's designs (in other words it uses the master template).

However, I found that ad-page contract validations like notnull on variables returns a zero sized reply when calling ad_page contract programmed as above.

I made a little modification

proc_doc ad_return_complaint {exception_count exception_text} "Return a page complaining about the user's input (as opposed to an error in our software, for which ad_return_error is more appropriate)" {
    global error_message
    if { $exception_count == 1 } {
	set problem_string "a problem"
	set please_correct "it"
    } else {
	set problem_string "some problems"
	set please_correct "them"
    }
    set error_message $exception_text
    doc_return 200 text/html [template::adp_parse  [template::util::url_to_file "/www/templates/error" [ad_conn file]] {}] 
}

The later seems to have corrected the error I was experiencing.

Thanks to everyone for responding .....

Forum OpenACS Q&A: Response to ad_return_complaint and templating