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

Esteemed Monks,

Your grateful supplicant comes before you yet again, seeking Wisdom:

I have two tables declared in my Class::DBI module: 

package InContact::cDBI::contactdetail;
use base 'InContact::cDBI';

__PACKAGE__->set_up_table('contactdetail');
__PACKAGE__->has_a('contact_id' => 'InContact::cDBI::contact');

package InContact::cDBI::contact;
use base 'InContact::cDBI';

__PACKAGE__->set_up_table('contact');
__PACKAGE__->has_many('contact_detail' => 'InContact::cDBI::contactdet
+ail', 'contact_id');

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What I need to find is the records in InContact::cDBI::contact which have corresponding records in InContact::cDBI::contactdetail where the value of the recontact field in the InContact::cDBI::contactdetail is a certain date. So I ran the following code: 
    my $details = InContact::cDBI::contact->contact_detail(recontact =
+> $tm);
    print Dumper $details;

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and what do I get? I get an interator (quite okay) but it is telling me which InContact::cDBI::contactdetail records are involved, what I need is the InContact::cDBI::contact records that point to those! This is the actual output from Data::Dumper:
$VAR1 = bless( {
  '_data' => [
    {
      'id' => '6'
    },
    {
      'id' => '7'
    }
  ],
  '_place' => 0,
  '_mapper' => [],
  '_class' => 'InContact::cDBI::contactdetail'

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What am I missing here folks?

jdtoronto

Replies are listed 'Best First'.
Re: Class::DBI not giving me what I need!
by NetWallah (Canon) on Oct 05, 2004 at 16:58 UTC
    I think you are missing the

    $obj = Class->retrieve( %key_values );

    In your case, that would be something like:

     foreach my $Contact(InContact::cDBI::contact->contact_detail(recontac
+t => $tm)){
      my @cols= $Contact->columns;
}

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        Earth first! (We'll rob the other planets later)

[reply]
[d/l]
Re: Class::DBI not giving me what I need!
by Arunbear (Prior) on Oct 05, 2004 at 21:32 UTC 
    my $details = InContact::cDBI::contact->contact_detail(recontact =
> $tm);

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    This doesn't work because the contact_detail method created by has_many is an instance method - if you already had an object $obj of class InContact::cDBI::contact returned by retrieve or search then you could say 

    my @details = $obj->contact_detail(recontact =
> $tm);

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    You can do something like 

    my @contacts = map { $_->contact_id } InContact::cDBI::contactdetail->
+search(recontact =
> $tm);

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    and then filter out the duplicates.

    But I think you will need to use set_sql to do the kind of search you have in mind (can't give an example because I don't know what your fields are).

[reply]
[d/l]
[select]
      Actually, has_many works fine as a class method. You're right about the rest though.
[reply]

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