Propel criteria? or is it even possible to create such query? - mysql

Question

I have 3 tables: product, product_parameter, product_parameter_item.
Product and product parameter have no foreign references, product_parameter_item has product_id and product_parameter_id.
For example i have 4 products:
1
2
3
4
Product_parametetrs:
1 - Model
2 - Color
Product_parameter_item:
id - product_id - product_paramter_id - value:
1 - 1 - 1 - Toyota
2 - 1 - 2 - white
3 - 2 - 1 - Toyota
4 - 2 - 2 - black
5 - 3 - 1 - Citroen
6 - 3 - 2 - white
7 - 4 - 1 - Citroen
8 - 4 - 1 - black
How can I get all products with Model = Toyota, Color = Black ?
$c->addJoin(ProductPeer::ID, ProductParameterItemPeer::PRODUCT_ID);
$c->addJoin(ProductParameterItemPeer::PRODUCT_PARAMETER_ID, ProductParameterPeer::ID);
foreach ($product_params as $i => $param){
$c1 = $c->getNewCriterion(ProductParameterPeer::ID, $param->getId());
$c2 = $c->getNewCriterion(ProductParameterItemPeer::VALUE, $value);
$c1->addAnd($c2);
$c->addAnd($c1);
}
Doesnt work
$c->addJoin(ProductPeer::ID, ProductParameterItemPeer::PRODUCT_ID);
foreach ($product_params as $i => $param){
$c1 = $c->getNewCriterion(ProductParameterItemPeer::ID, $param->getId());
$c2 = $c->getNewCriterion(ProductParameterItemPeer::VALUE, $value);
$c1->addAnd($c2);
$c->addAnd($c1);
}
Doesnt work either
$c->addJoin(ProductParameterItemPeer::PRODUCT_PARAMETER_ID, ProductParameterPeer::ID);
foreach ($product_params as $i => $param){
$c->add(ProductParameterPeer::ID, $param->getId());
$c->add(ProductParameterItemPeer::VALUE, $value);
}

Answer 1

I have made this function to get ids of products and add them to Criteria. Didnt find another way :(
$product_params = ProductParameterPeer::getParamsForFilter();
$ids = false;
if (count($product_params)){
$sql = '';
$clause = '';
$clauses = array();
$make_query = false;
foreach ($product_params as $i => $param){
if ($values[$param->getAlias()]){
$is_last = end($product_params) == $param;
$sql .= '(SELECT product_id FROM `product_parameter_item` WHERE `value` = "'.$values[$param->getAlias()].'" AND `product_parameter_id` = '.$param->getId().' ) t'.$i.($is_last?' ':', ');
$clauses[] = 't'.$i.'.product_id';
$make_query = 'SELECT t'.$i.'.product_id FROM ';
}
}
if (count($clauses) == 1) $clause = 'WHERE '.$clauses[0];
else if (count($clauses) == 2) $clause = 'WHERE '.$clauses[0].'='.$clauses[1];
else if (count($clauses) > 2){
$clause = 'WHERE ';
for ($i = 1; $i < count($clauses); $i++){
$clause .= '('.$clauses[0].'='.$clauses[$i].')'.($i == count($clauses)-1 ? '' : ' AND ');
}
}
if ($make_query){
$query = $make_query.$sql.$clause;
$con = Propel::getConnection();
$statement = $con->prepare($query);
$statement->execute();
$ids = array();
while($stmt = $statement->fetch(PDO::FETCH_ASSOC)) {
$ids[] = (int)$stmt['product_id'];
}
}
}
return $ids;