(prestashop) How can I detect if there's a catalog price rule bound to a category or some of its parents? - prestashop

Question

I have catalog price rules for some categories. In frontend, in category.tpl, I have to notify if there are special prices bound to that specific category or some of its parents.
For now, I'm building a function on the controller that finds it with a query. I was wandering if there was some shortcut for doing this.

Answer 1

I wrote a function (a CategoryController method) to solve my problem and I share:
public function get_category_promo(){
//get the active country, since promo are also country-based
if($this->context->customer->isLogged()){
$current_country = Customer::getCurrentCountry($this->context->customer->id);
} else {
$current_country = $this->context->country->id;
}
$db = Db::getInstance();
$sql = '
SELECT
truncate(`reduction`,0) as reduction,
`reduction_type`,
`from`,
`to`,
`type` as category_type,
`value` as id_category,
`id_parent` as category_parent,
`level_depth` as depth
FROM
`'._DB_PREFIX_.'specific_price_rule_condition` rule_condition
INNER JOIN
`'._DB_PREFIX_.'specific_price_rule_condition_group` rule_group
on rule_condition.`id_specific_price_rule_condition_group` = rule_group.`id_specific_price_rule_condition_group`
INNER JOIN
`'._DB_PREFIX_.'specific_price_rule` price_rule
on price_rule.`id_specific_price_rule` = rule_group.`id_specific_price_rule`
INNER JOIN
`'._DB_PREFIX_.'category` category
on rule_condition.`value` = category.`id_category`
WHERE rule_condition.`type` = "category"';
$parents = $this->category->getParentsCategories();
array_shift($parents);//first is == this->category so I shift it out
$sql_aux = ' and (rule_condition.`value` = ' . $this->category->id_category;
foreach($parents as $parent){
$sql_aux .= ' or rule_condition.`value` = ' . $parent["id_category"];
}
$sql_aux .= ')';
$sql_aux .= ' and price_rule.`id_country` = ' . $current_country;
$sql_aux .= ' order by level_depth desc';
$sql .= $sql_aux;
$promo_data = $db->executeS($sql);
$promo_data = count($promo_data) > 0 ? $promo_data : null;
if(!$promo_data) return false;//stop
function validate_date($promo){
//if there are no dates
if((int)$promo['to'] == 0 && (int)$promo['from'] == 0) return true;
//if there is end promo date
if((int)$promo['to'] != 0){
$to = new DateTime($promo['to']);
//...and is still valid
if($to >= new DateTime('NOW')) return true;
}
}//end validate
//refine query results
$filtered = array_values(array_filter($promo_data,'validate_date'));
$promo_data = $filtered[0];//if there are more than one promo on the same category, the promo on the higher depth is used form the system, so I need only that promo
//promo without dates. Only refine to/from to better use in smarty
if((int)$promo_data['to'] == 0 && (int)$promo_data['from'] == 0){
$promo_data['to'] = 0;
$promo_data['from'] = 0;
$this->context->smarty->assign('promo_data', $promo_data);
return true;
}
if((int)$promo_data['to'] != 0){//promo ha send date
$to = new DateTime($promo_data['to']);
if($to >= new DateTime('NOW')){
$promo_data['to'] = $to->format('d-m-Y');
} else {
return false;//not a valid date
}
}
if((int)$promo_data['from'] != 0){
$from = new DateTime($promo_data['from']);
$promo_data['from'] = $from->format('d-m-Y');
} else {
$promo_data['from'] = 0;
}
$this->context->smarty->assign('promo_data', $promo_data);
}//end get_category_promo