Here's my suggestion:
firstly use Class::DBI for data access: 
package Currency;
use base 'Class::DBI::mysql';

__PACKAGE__->set_db('Main', 'dbi:mysql:dbname', 'user', 'password');
__PACKAGE__->set_up_table("currency");

1;

[download]
Amongst (many) other things, this gives you an easy way to retreive all records in the currency table, or to retreive a particular record given its primary key. Class::DBI has very good documentation.
Now you can use it like this in the view component: 
<h3>Currencies:</h3>

<table cellpadding=2>

<tr id=tableheadcolor>
    <th>Currency</th>
    <th>Cid</th>
</tr>

% while (my $currency = $iter->next) {
%    $row++; 
%    $shadetable = ($row % 3 == 0 ? q{id="shadetable"} : "");

     <tr <% $shadetable %>>
       <td>$currency->currency</td>
       <td>$currency->cid</td>
     </tr>
     
% }

</table>

<%once>
use Currency;

my $iter = Currency->retrieve_all;
</%once>

<%init>
my $row=0;
my $shadetable;
</%init>

[download]
And like this in the form component: 
<h3>Make a new currency entry</h3>

<form action="comp/insert.mas?form=add_currency" method="post">

    <table cellpadding=2>
    <tr>    
        <td align=right>Currency:</td>
        <td><input name="currency" type="text" value="<% $currency_val
+ %>" size="5"></td>
    </tr>   
    </table>
    <input type="submit">
</form>

<& /view_currency.html &>


<%args>
    $cid => 0
</%args>

<%init>
my $currency_val = "";
if($cid ) {
    $currency_val = Currency->retrieve($cid)->currency;
}
</%init>

[download]
Finally, I'd strongly suggest reading the Mason Book (the whole thing is available to read online).

In reply to Re: Reusing code for Mysql and Mason Application by Arunbear
in thread Reusing code for Mysql and Mason Application by neilwatson

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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, details, 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, summary, 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.