Can't add new model to opencart - php

Question

I a, trying to implement a modification to the registration process in opencart. I have modified the form in the view and the values are posted to the account/customer.php model in which I have added some code to process my new fields as shown below:
/* add children and links to product categories */
$this->load->model('account/children');
//loop childrens names to use key for remaining info
foreach($data['children-name'] as $key=>$name){
//re-assign data and purify
$child['name'] = mysql_real_escape_string($name);
$child['surname'] = mysql_real_escape_string($data['children-surname'][$key]);
$child['gender'] = mysql_real_escape_string($data['children-gender'][$key]);
$child['dob'] = mysql_real_escape_string($data['children-dob'][$key]);
$child['school'] = mysql_real_escape_string($data['children-school'][$key]);
$child['unit'] = mysql_real_escape_string($data['children-unit'][$key]);
$child['height'] = mysql_real_escape_string($data['children-height'][$key]);
$child['chest'] = mysql_real_escape_string($data['children-chest'][$key]);
$child['waist'] = mysql_real_escape_string($data['children-waist'][$key]);
$child['waistToKnee'] = mysql_real_escape_string($data['children-waist-to-knee'][$key]);
$child['insideLeg'] = mysql_real_escape_string($data['children-inside-leg'][$key]);
$child['shoeSize'] = mysql_real_escape_string($data['children-shoe-size'][$key]);
$child['customerId'] = $customer_id;
//update/create child record
$this->model_account_children->addChild($child);
}
/* end add children and links to product categories */
I then created the relative model file in account/children.php in which has the following code:
class ModelAccountChildren extends Model {
public function addChild($data) {
//create other fields not in $data
$lastUpdated = date('Y-m-d h:i:s');
$childCat = getChildCategory($data['school']);
$dob = date('Y-m-d h:i:s', $date['dob']);
if($data['gender'] == 'm'){
$data['gender'] = 'Male';
}else{
$data['gender'] = 'Female';
}
echo "INSERT INTO " . DB_PREFIX . "customer_children (customer_id, child_name, child_surname, child_gender, child_dob, category_id, child_school, child_unit, child_height, child_chest, child_waist, child_waist_to_knee, child_inside_leg, child_shoe_size, child_last_updated) VALUES (".$data['customerId'].", '".$data['name']."', '".$data['surname']."', '".$data['gender']."', '".$dob."', ".$childCat['category_id'].", '".$data['school']."', '".$data['unit']."', '".$data['unit']."', '".$data['height']."', '".$data['chest']."', '".$data['waist']."', '".$data['waistToKnee']."', '".$data['insideLeg']."', '".$data['shoeSize']."', '".$lastUpdated."')";
//perform insert
$this->db->query("INSERT INTO " . DB_PREFIX . "customer_children (customer_id, child_name, child_surname, child_gender, child_dob, category_id, child_school, child_unit, child_height, child_chest, child_waist, child_waist_to_knee, child_inside_leg, child_shoe_size, child_last_updated) VALUES (".$data['customerId'].", '".$data['name']."', '".$data['surname']."', '".$data['gender']."', '".$dob."', ".$childCat['category_id'].", '".$data['school']."', '".$data['unit']."', '".$data['unit']."', '".$data['height']."', '".$data['chest']."', '".$data['waist']."', '".$data['waistToKnee']."', '".$data['insideLeg']."', '".$data['shoeSize']."', '".$lastUpdated."')");
}
public function updateChild($data) {
}
public function getChildCategory($childSchoolStr){
$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "category_description WHERE name LIKE '" . $childSchoolStr . "'");
return $query->row;
}
}
For some reason the script is not getting access to the new model at the point I call it in model/account/customer.php on the line:
$this->load->model('account/children');
Am I doing something wrong?

Answer 1

Worked it out chaps.
$childCat = getChildCategory($data['school']);
Bit of a brain lapse, line above should be:
$childCat = $this->getChildCategory($data['school']);

Answer 2

It seems correct to me. You can use it within model. Do you use vqmod? Try deleting cache files.
Maybe add a test function to your model and see you can call it.
What is the error you get?

Answer 3

Have you definitely put the file in catalog/model/account/children.php ? If so, do you get any error messages at all that would help debug this? Also, when you run the code, are you certain that $data['children-name'] contains data?