Forum OpenACS Q&A: Show errors on screen

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1: Show errors on screen
Posted by David Walker on 05/09/01 05:39 AM
I have replaced ns_sourceproc on my machines with the following so that I may view the error on screen as I am troubleshooting.
proc ns_sourceproc {conn ignored} {
        set script [ns_url2file [ns_conn url $conn]]
        if ![file exists $script] {
                ns_returnnotfound $conn
        } else {
                if {[string compare [ad_parameter_real dev_server 
special_parameters] "true"] == 0 } {
                        if {[catch {
                                source $script
                        } ] } {
                                variable errorInfo
                                ns_returnerror 500 "
[ns_quotehtml $errorInfo]
"
                        }
                } else {
                        source $script
                }
        }
}

it is a accompanied by this in the config.tcl file
ns_section "ns/server/${server}/acs/special_parameters"
    ns_param dev_server true
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2: Response to Show errors on screen (response to 1)
Posted by Claudio Pasolini on 05/09/01 09:44 AM
David,
I tried your solution, but I got an Error: invalid command name "ad_parameter_real" running ns_sourceproc.
Any advice?
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3: Response to Show errors on screen (response to 1)
Posted by David Walker on 05/09/01 03:06 PM
ad_parameter_real should be ad_parameter.
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4: Response to Show errors on screen (response to 1)
Posted by Claudio Pasolini on 05/14/01 10:29 AM

David,
I made the correction, but actually errors are not shown on the browser's screen, nor in the error log!

Any ideas?

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5: Response to Show errors on screen (response to 1)
Posted by hafeez bana on 05/14/01 01:24 PM
Look at the patches under http://www.openacs.org/new-file-storage for backport of ad_page_contract. These implement changes to ad-abstract-url that outputs errors to browser as well as working with ad_page_contract (which is one awesome proc in my opinion)

Cheers, Hafeez

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6: Response to Show errors on screen (response to 1)
Posted by David Walker on 05/14/01 03:50 PM
This only affects files referenced by their full name. It does not do anything to files accessed by abstract_url. i.e. /index.tcl rather than / and myfile.tcl rather than myfile.

Beyond that I can't think of any reason it shouldn't work.