YAML problem

luxs has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I'm sending data through the POST from HTML and then try to save it as YAML. This is a form to create data

<form action="/send.pl" method="POST">
<input name="product" size="50">
<input type="submit" value="Go">
</form>
[download]

here is the processing of the data in send.pl:

use YAML::Syck;
use CGI::Fast ':standard';
while ( my $q = new CGI::Fast ) {
my $data;
$data->{'product'}=$q->param('product');
$data->{'product_test'}="test product"; #for test that YAML is working
DumpFile( 'test.yml', $data );

print "Content-type: text/html\n\n";
print "q=".$q->param('product'); # this is for test only
}
[download]

The result on the screen is perfect. q contains what ever it should contain. But the YAML file is bad.

---
product: ~
product_test: "test product"
[download]

Why the data are destroyed? UPD: The problem was solved by switching from YAML::Syck to YAML::Dumper library.

Comment on YAML problem Select or Download Code

Replies are listed 'Best First'.
Re: YAML problem by Anonymous Monk on May 26, 2015 at 03:05 UTC
Well, the filename doesn't change, but its a relative filename ... so try an absolute filename	[reply]
Re^2: YAML problem by Anonymous Monk on May 26, 2015 at 11:26 UTC
No, this is not the case. Ive use unique file ne, file name with full path, or just put yaml file to the screen - results are alwsys wrong.	[reply]
Re^3: YAML problem by Corion (Patriarch) on May 26, 2015 at 11:37 UTC
I find no documentation in YAML::Syck how the library behaves in the case that `DumpFile` cannot write the file, for example due to missing permissions etc. . It may likely be that the new output is not written because the permissions between web server user are not sufficient.	[reply] [d/l]
Re^4: YAML problem by Anonymous Monk on May 26, 2015 at 14:38 UTC
Re^5: YAML problem by Corion (Patriarch) on May 26, 2015 at 15:02 UTC
Some notes below your chosen depth have not been shown here
Re^4: YAML problem by luxs (Beadle) on May 26, 2015 at 21:59 UTC
Re^5: YAML problem by Corion (Patriarch) on May 27, 2015 at 06:47 UTC
Some notes below your chosen depth have not been shown here
Re: YAML problem by GotToBTru (Prior) on May 26, 2015 at 15:34 UTC
From the man page: This module has a lot of known issues and has only been semi-actively maintained since 2007. If you encounter an issue with it probably won't be fixed unless you offer up a patch in Git that's ready for release. You might want to investigate your other options. Dum Spiro Spero	[reply]
Re^2: YAML problem by luxs (Beadle) on May 26, 2015 at 22:28 UTC
Is there are any other good YAML libraries for perl?	[reply]
Re^3: YAML problem by afoken (Chancellor) on May 27, 2015 at 03:45 UTC
If you don't insist on YAML, try JSON::XS, that will use JSON instead. JSON is also plain text, but (IMHO) more readable than YAML. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply]
Re^4: YAML problem by luxs (Beadle) on May 27, 2015 at 10:47 UTC
Re^3: YAML problem by jeffa (Bishop) on May 26, 2015 at 23:17 UTC
I have had no problems with YAML, even though its docs claim it is still an alpha release and based from "a very old pre [YAML] 1.0 spec." jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l]