Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery

How do I use a database and handle checkboxes?

by scratch (Sexton)
on Aug 22, 2000 at 03:02 UTC ( #28936=categorized question: print w/replies, xml ) Need Help??
Contributed by scratch on Aug 22, 2000 at 03:02 UTC
Q&A  > CGI programming


I'm using to collect some info. Right now I'm just writing the values out to a file with the save_parameters function, but I'd like to write the data to a database. I think I can do this with the DBI module - and I'll look into that more - but I've got sort of a general question: How can I take a checkbox_group variable or question from the form and write its values (stored in an array in perl) into a database? Do I somehow need to pull out each of the array elements into scalar vars before I try writing data out to a database? I'm getting sort of stumped thinking about how to do this. Thanks a lot for any suggestions!

Answer: How do I use a database and handle checkboxes?
contributed by Ovid

There are many ways of addressing this issue. The following is not the best, but it works. I have a form where teachers can enter lesson plans and a series of check boxes represent the appropriate grade levels, K through 12. The checkboxes are named GradeK, Grade1, ... Grade12.

When this data is sent via CGI, the parameter is sent to the script as GradeK=on (or whatever value you set the checkbox at). No checkbox parameter is sent if it's not checked. Therefore, I use the following sub to pull the data:

sub getGrades { my $grades; my @keys = $template->param; # Look for the grade parameters and add each one to $grades foreach (@keys) { $grades .= $1 . ',' if /^Grade([1-9]|1[0-2]|K)$/; } $grades =~ s/,$//; # remove trailing comma return $grades; }
This sub is called from the following sub which uses DBI to write the data to a MySQL database:
sub storeData { my $table = shift; my $grades = getGrades(); my $standards = getStandards(); use DBI; my $dbh = DBI->connect("DBI:mysql:$database",$user,$password); $dbh->{RaiseError} = 1; # save template information to database my $sql = 'INSERT INTO ' . $table . '(title, lesson_summary, grades, standards) VALUES (?, ?, ?, ?)'; my $sth = $dbh->prepare($sql); $sth->execute( $template->param('Title'), $template->param('Summary'), $grades, $standards ); $template->end_html; $sth->finish; $dbh->disconnect; print $template->redirect(' +nks.html'); }
This should give you a good start on how to approach this (Grades is defined as varchar(28), by the way).


Answer: How do I use a database and handle checkboxes?
contributed by princepawn

If you use DBIx::Recordset which is built on top of DBI, you can commit form data to database in one line of DBIx::Recordset:

@names = $q->param(); map { $fdat{$_}=$q->param($_} } @names; DBIx::Recordset->Insert({%connect_dsn,%fdat});

For more information on DBIx::Recordset, visit:

Please (register and) log in if you wish to add an answer

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (5)
    As of 2020-08-03 11:54 GMT
    Find Nodes?
      Voting Booth?
      Which rocket would you take to Mars?

      Results (27 votes). Check out past polls.