One thing I've noticed about Tangram is its shockingly inaccurate documentation and poor error messages when you pass an unexpected object type to a function. But when you do call it with the correct syntax it seems to work well :).

Once you have a schema, you need to deploy it with a back end. So if you're deploying to a generic relational database:

#!/usr/bin/perl

use strict;
use Tangram;
use Tangram::Relational;

my ($schema) = Tangram::Schema->new(
    'classes'   =>  {
        'item'  =>  {
            'table'     =>  'test',
            'abstract'  =>  1,
            'fields'    =>  {
                'string'    =>  [ qw(
                    category
                    description_short
                    description_long
                    description_table
                    image_1
                    image_2
                    supplier_id
                    barcode_id
                ) ],
                'int'       =>  [ qw(
                    manufacturer
                    supplier
                ) ]
            }
        }
    }
);

Tangram::Relational->deploy($schema);

[download]

s/Relational/mysql/ if you're using MySQL.

In reply to Re: Foray into Tangram and Schemas by mugwumpjism
in thread Foray into Tangram and Schemas by rob_au

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.