Hello Dear Monks

I'm having some trouble setting up a has_many relationship between 2 entities - a page entity and a column entity. The relationship I'm tring to use in my code is 'a page has many columns'.

If I structure the tables in the following way, I'm facing no problems.

Table page page_id page_title 1 Geography 2 History

Table column column_id column_title page_id 1 Geog 1 1 2 Geog 2 1 3 Geog 3 1 4 Hist 1 2

I set up all the DBI modules, etc... and in Page.pm I add a line:

__PACKAGE__->has_many(cols => 'Column');
[download]

Now I can get all columns of a page with the following code:

$columns = Page->retrieve(1)->cols;
[download]

Now good database design, has taught me that when one has a 1:N relationship, one should construct a new table to hold that relationship.
So, the foll structure:

Table page page_id page_title 1 Geography 2 History

Table page_column page_id column_id 1 1 1 2 1 3 2 4

Table column column_id column_title 1 Geog 1 2 Geog 2 3 Geog 3 4 Hist 1

So now how do I code the relationships in my Class::DBI modules which would enable me to get all the columns of a page in the same was as above.
i.e.

$columns = Page->retrieve(1)->cols;
[download]

Thankz in advance for all suggestions and help and compliments of the season to all of you!

update:
Changed the 'columns' method to 'cols' since Class::DBI already has a 'columns' method
- Thanks to PodMaster

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