[ic] Usertag return value

[Grant]

>> >> >> > but that kills the whole page.  What is the correct way to do
>> >> >> > this so I can evaluate whether or not the tag executed
>> properly?
>> >> >>
>> >> >> You could use exceptions with an Interchange [try] block (see
>> >> >> etc/log_transaction for an example), but I think a simple return
>> >> >> value would suffice in this case. If you want a "0" return value
>> >> >> when one or more of the sizes fails, then use a return value
>> >> >> variable and only set it to true if all three succeed.
>> >> >
>> >> > Hey,
>> >> >
>> >> > Right, there's a bunch of ways to do this, depending on
>> >> > whether you want to know which one failed (and exit immediately),
>> >> > or you want to run all three anyway and just indicate the exit
>> >> > status more as an information than an error.
>> >> >
>> >> > If you want to exit immediately when one fails, use i.e.:
>> >> >
>> >> > do_resize(....) or return 0;
>> >>
>> >> I'm getting strange results from this now.  My usertag is set up
>> like
>> >> this:
>> >>
>> >> do-stuff;
>> >> write-file1 or return 0;
>> >> chmod-file1;
>> >> do-stuff;
>> >> write-file2 or return 0;
>> >> chmod-file2;
>> >> do-stuff;
>> >> write-file3 or return 0;
>> >> chmod-file3;
>> >>
>> >> The usertags exits and returns 0, the first 2 write-file commands
>> >> execute, and none of the chmod-file commands execute.  If I remove
>> the
>> >> "or return 0;" portions, everything executes perfectly.  Does that
>> >> make sense to anyone?
>> >
>> > Check what return value is returned from the write-file commands...
>> > If they return 0 or undef, then your 'return 0' part will kick in
>> > and eject even though things were alright.
>> >
>> > Also, for file writing and chmodding you really want to be doing
>> > proper checking, i.e. logging or printing the value of $! when the
>> > error happens.
>> >
>> > If you don't know where to begin or what return values come out of
>> > your write functions, I'd go this way:
>> >
>> > $ret= write-file1;
>> > $Tag->log("wf1: return=$ret error=$!");
>> >
>> > $ret= chmod-file1;
>> > $Tag->log("cf1: return=$ret error=$!");
>> >
>> > and so on for all three, and watch your catalog logfile for
>> results...
>> >
>> > Also, you might be able to get rid of chmod if you set a correct
>> umask
>> > before creating the files.
>> >
>> > Cya,
>> > -doc
>>
>> I'm still not sure why "or return 0;" causes the usertag to fail so I
>> changed my file writing and chmodding lines like this:
>>
>> $return= $image->Write(filename=>'/file/location/'.$name.'_image.jpg')
>> or return 0;
>> $Tag->log("1: return=$return error=$!");
>> $return= chmod(0644,"/file/location/".$name."_image.jpg") or return 0;
>> $Tag->log("2: return=$return error=$!");
>>
>> and the usertag fails and there is nothing in the catalog error.log.
>> Can you tell me what I'm doing wrong?
>
> * Have you tried to change 'or' for ||

I tried that with the same results.

> * Have you tried to put:
>  $return= $image->Write(filename=>'/file/location/'.$name.'_image.jpg') or
> return "wet noodle";
>
>  and see what it returns?

With my application I need a 1 or 0 returned and any other info in the
error log.

- Grant