[Dbix-class] Nested create with relationships

[Kate Yoak]

Hi everyone!

I am new here - a cdbi convert.

I am creating a record with its has_many relationship and, though  
create succeeds, I wind up with data in the has_many table without  
the foreign key.

Here is the data that goes into create:

$VAR1 = {
           'features' => [
                           {
                             'feature_id' => undef,
                             'feature' => 'kdkdk',
                             'ord' => '1'
                           },
                           {
                             'feature_id' => undef,
                             'feature' => 'kdkdkdk',
                             'ord' => '2'
                           },
                           {
                             'feature_id' => undef,
                             'feature' => 'jjjj',
                             'ord' => '3'
                           }
                         ],
           'sku' => 'cccc',
           'name' => 'kdkdk',
           'description' => 'kdkdkdk'
         };

The relationship's foreign key is product_id - it is created as a  
result of the main insert - but is not propagated into the feature  
table.  Here are the inserts:

INSERT INTO product (description, name, sku) VALUES (?, ?, ?):  
'kdkdkdk', 'kdkdk', 'cccc'
SELECT COUNT( * ) FROM product_feature me WHERE ( feature = ? AND  
feature_id IS NULL AND ord = ? ): 'kdkdk', '1'
INSERT INTO product_feature (feature, feature_id, ord) VALUES  
(?, ?, ?): 'kdkdk', 'NULL', '1'
SELECT COUNT( * ) FROM product_feature me WHERE ( feature = ? AND  
feature_id IS NULL AND ord = ? ): 'kdkdkdk', '2'
INSERT INTO product_feature (feature, feature_id, ord) VALUES  
(?, ?, ?): 'kdkdkdk', 'NULL', '2'
SELECT COUNT( * ) FROM product_feature me WHERE ( feature = ? AND  
feature_id IS NULL AND ord = ? ): 'jjjj', '3'
INSERT INTO product_feature (feature, feature_id, ord) VALUES  
(?, ?, ?): 'jjjj', 'NULL', '3'

As you can see, we are not selecting product_id from product prior to  
putting features in.  What should I do to avoid this problem?  The  
documentation leads me to believe that create() should work for what  
I want, so I am guessing, I am doing something wrong.

In addition, why are there so many queries? What is count(*) being  
selected for and why are we doing one insert at a time instead of a  
bulk insert? Is that something I should improve on?

Thanks for your help!
Kate