Is there a correct way to count the rows of a table in Zend Framework 2 while using an hydrator ?
I have tried the following:
$result = $this->select();
return $result->count();
but that's a bad way of achieving it, so I've tried
return $this->tableGateway->select(function(Select $select) {
$select->columns(array('num' => new \Zend\Db\Sql\Expression('COUNT(1)')));
});
but the problem is that I am using an hydrator, so any field that's not matched in the Module configuration is simply dropped from the resource.
Is there a clean way of retrieving the number of rows while using an hydrator ? I'd like to avoid doing something like this:
$select->columns(array('id' => new \Zend\Db\Sql\Expression('COUNT(1)')))
Related
I've got a controller action that's supposed to be looking for semi-duplicate entries in a collection, and removing them from that Entity's list. New ones should not have an ID yet, and existing ones do, so I'm running findOneBy() with an array of parameters to match on (leaving out ID).
I am baffled and deeply troubled by the error I am getting, where it finds the wrong entity! I've got some relevant code below, I hope this is just a dream or a silly mistake, I can't reproduce the output on my own windows development environment, but my co-worker was testing on his mac, and was getting errors, so I went on his machine and did some quick echoing to see what was going on. See the code and the result below.
CODE
foreach($entity->getTechnicians() as $tech) {
//find new addtions, see if they exist
if (!$tech->getId()) {
echo "Technician " . $tech->getFirstName() . " has no ID, trying to find one that does<br/>";
$found = $em->getRepository('TechnicianBundle:Technician')->findOneBy(array(
'firstName' => $tech->getFirstName(),
'lastName' => $tech->getLastName(),
'email' => $tech->getEmail(),
'residentEngineer' => $tech->getResidentEngineer(),
'officeNumber' => $tech->getOfficeNumber()
));
//if one with an ID already exists
if ($found) {
echo "found technician " . $found->getFirstName() . " that already has id " . $found->getId() . "<br/>";
...
OUTPUT
Technician Four has no ID, trying to find one that does
found technician khjvuov that already has id 7
Probably it's not a findOneBy() issue.
If without add/remove calls it works, it may be caused by modified current pointer of ArrayCollection so when $tech->getFirstName() is called it actually points to another entry.
You may try to iterate your collection like this:
$iterator = $entity->getTechnicians()->getIterator();
while ($iterator->valid()) {
$tech = $iterator->current();
... $entity->addTechnician()/$entity->removeTechnician()
$iterator->next();
}
It will create new ArrayIterator object, so you can modify underlying object preserving ArrayCollection's internal pointer.
This may be obsolete if you are running PHP7 (reference - Note box)
Ultimately, the findOneBy() method uses the load() method of the Doctrine ORM.
In the doc, the parameter $criteria is described as such :
#param array $criteria The criteria by which to load the entity.
You should probably dig deeper into Doctrine API to make sure, but there is a big chance that in the array you are passing as an argument, only the first key => value pair is taken into account (in your example, 'firstName' => $tech->getFirstName()).
If this is the case, you'll probably need to add your own custom method in your entity repository, one that would allow you to query your database with more advanced statements (using OR/AND or LIKE() in SQL for instance).
I currently use the Criteria to filter a collection of objects. But when I want to achieve with 2 orderBy fields, only the first is considered. I do not understand.
$events = new Collections\ArrayCollection($results);
$dateFrom = new \DateTime($date);
$dateTo = new \DateTime(date('Y-m-d H:i:s', strtotime($date . ' + 1 day')));
$criteria = Criteria::create()
->where(Criteria::expr()->eq('activity', $activity));
$criteria->orderBy(array(
"time" => "ASC",
"title" => "ASC"
));
How can I make it work with two orderby fields and not only the first ?
Thank you in advance for any answers !
Your code is correct, assuming that $criteria is then applied correctly to the ArrayCollection.
Judging by the names of your fields you're trying to order by, it's possible that title doesn't affect the order because time doesn't repeat among the elements in the collection.
If this isn't the case, please provide more information on the results you're getting and I will update my answer.
Update (in response to additional data provided that has since been deleted):
You are sorting the collection correctly. The problem is that you're then feeding the ArrayCollection into the Paginator, which apparently cannot sort by more than one field.
There's an open issue in Knp's tracker about this: https://github.com/KnpLabs/KnpPaginatorBundle/issues/109.
I feel like this shouldn't be to hard, but try as I might, I keep getting errors.
What I'm wanting to do, is to have a single "add" function that will handle the basic functionality of adding records to any / all tables. Basically, the post data will contain the table name, as well as the fields / values to be inserted. The controller itself, confirms the user has access to do these things, and then verifies the fields are valid, before creating a new instance of the entity, that's where things go haywire:
$entityName = 'Products';
$row = new $entityName(); //doesn't work
$row new Products(); //works
I haven't found a way or any examples of creating a new entity using the Entity Manager, or else that might work, because i've created functions using EM to do queries, updates, and deletes, but I just can't get this to work with the add functions.
1. Your problem is almost certainly namespacing (see below). Try this instead:
$entityName = 'My\Bundle\Entity\Products';
$row = new $entityName();
Should work. ;)
2. If you want to create new instances using an EntityManager, try this:
$entityName = 'My\Bundle\Entity\Products';
$row = $em->getClassMetadata($entityName)->newInstance();
...assuming $em is your EntityManager. :-)
3. To "prove" that your problem is namespacing, try this in a plain .php file that you run from the command line:
namespace Foo;
class Test {}
$class1 = 'Foo\Test';
$class2 = 'Test';
$x = new Test(); // Will work
$y = new $class1(); // Will work
$z = new $class2(); // Will trigger "Class 'Test' not found" fatal error
Two things:
Try with "Products" instead of 'Products'
I suppose that your entity Products has a namespace, it is required (even if you declared an use statement). So try with "My\Bundle\Entity\Products".
if i have two product collections is there a way to merge them into one?
for example (my final intent isn't to actually just get a collection of 2 cats, this is just to illustrate the issue):
$collection1 = Mage::getModel('catalog/category')->load(148)->getProductCollection();
$collection2 = Mage::getModel('catalog/category')->load(149)->getProductCollection();
$merged_collection = merge_collections($collection1,$collection2);
any help would be appreciated!
Assuming the items you wish to group together are of the same type and exist in the database then you can do this:
$collection1 = Mage::getModel('catalog/category')->load(148)->getProductCollection();
$collection2 = Mage::getModel('catalog/category')->load(149)->getProductCollection();
$merged_ids = array_merge($collection1->getAllIds(), $collection2->getAllIds());
// can sometimes use "getLoadedIds()" as well
$merged_collection = Mage::getResourceModel('catalog/product_collection')
->addFieldToFilter('entity_id', array('in' => $merged_ids))
->addAttributeToSelect('*');
Here I know to filter by entity_id because that is products' key field, like it is for most entity types, some flat tables have a different primary key. Often you can generalise that with one of the collection's getIdFieldName() method. Products are a bad example in this case because it's ID field name isn't filled out correctly.
Almost every (or every?) collection in Magento inherits from a Varien Data Collection. A collection is a special object that holds objects of another type. There's no method for merging collections, but you can add additional items of the appropriate type to the collection.
Code like this should get you where you want to go, although there's probably more efficient ways to loop and do the actual merging.
$collection1 = Mage::getModel('catalog/category')->load(148)->getProductCollection();
$collection2 = Mage::getModel('catalog/category')->load(149)->getProductCollection();
//load an empty collection (filter-less collections will auto-lazy-load everything)
$merged = Mage::getModel('catalog/product')->getCollection()->addFieldToFilter('entity_id',-1);
//add items from the first collection
foreach($collection1 as $item)
{
$merged->addItem($item);
}
//add items from the second collection
foreach($collection2 as $item)
{
//magento won't let you add two of the same thing to a collection
//so make sure the item doesn't already exist
if(!$merged->getItemById($item->getId()))
{
$merged->addItem($item);
}
}
//lets make sure we got something
foreach($merged as $product)
{
var_dump($product->getName());
}
I don't think there is such a method, but you can probably do something like that :
foreach ($collection1 as $item){
$collection2->addElem($item);
}
you can filter your collection directly without using 2.
$products = Mage::getModel('catalog/product');
$_collection = $products->getCollection();
->addCategoryFilter(2)
->load();
or try using 'addItem' to add your results to a collection. See also in Magento wiki
for the collection of products of several categories, you can use the following code
$collection = Mage::getModel('catalog/product')->getCollection()
->addAttributeToSelect('name')
->addAttributeToSelect('sku');
$collection->getSelect()
->join(
'catalog_category_product',
'product_id=entity_id',
array('category_id')
)
->where('catalog_category_product.category_id IN (?)', $categories);
Making a search with Apachesolr, i want to add a couple of filters in hook_apachesolr_prepare_query(&$query). This works fine, except I want the filters to widen the search ('OR'), rather than narrow it ('AND').
For example, if I have 4 nodes of type:A and 3 of type:B that match a search, to filter by type:A and type:B should return 7 nodes (of type:A AND nodes of type:B), rather than 0 those of type:A which are also of type:B.
I saw a suggestion to do this using the model of nodeaccess
foreach ($filters as $filter) {
$subquery = apachesolr_drupal_query();
if (!empty($subquery)) {
$subquery->add_filter('type', $filter);
$query->add_subquery($subquery);
}
}
but this doesn't seem to work. (It doesn't return any results).
I then tried (as I have a limited number of node types) excluding the types that I don't want:
$excludes = array('A', 'B', 'C');
$excludes = array_diff($excludes, $filters);
$exclude = implode('&', $excludes);
$query->add_filter('type', $exclude, TRUE);
This method of stitching them together doesn't work (the '&' gets escaped) but neither does adding them as subqueries, similar to the manner above.
Any suggestions on how to do this?
With Drupal7 and the last apacheSolr API, you can do OR filters by doing this :
function my_module_apachesolr_query_alter($query) {
// first, create a subQuery filter to store others
// and specify there is a "OR" condition
$filter = new SolrFilterSubQuery('OR');
// next, add all filters on bundle you want, each as
// a new subQuery filter, always with "OR" condition
// and add it to the primary filter
$a = new SolrFilterSubQuery('OR');
$a->addFilter('bundle', 'A');
$filter->addFilterSubQuery( $a );
$b = new SolrFilterSubQuery('OR');
$b->addFilter('bundle', 'B');
$filter->addFilterSubQuery( $b );
$c = new SolrFilterSubQuery('OR');
$c->addFilter('bundle', 'C');
$filter->addFilterSubQuery( $c );
// finally, add the primary subQuery filter as
// subquery of the current query
$query->addFilterSubQuery( $filter );
}
And your query search about type A OR type B OR type C (all results in each types). You can combine OR / AND by changing the parameter of the SolrFilterSubQuery instanciation.
Special thanks to this page and it's author : http://fr.ench.info/blog/2012/04/03/Add-Filters-ApacheSOLR.html
I havenť played with SOLR much but I am quiete familiar with Drupal and Zend Lucene (or Drupal Lucene API).
I would suggest that you try to filter your results based on content type (because each node has its content type stored in the object).
The second idea is to change basic operator. I am not sure how it is done in SOLR but i Zend Lucene
Zend_Search_Lucene_Search_QueryParser::setDefaultOperator($operator) and Zend_Search_Lucene_Search_QueryParser::getDefaultOperator() methods, respectively.
Docs can be found in Zend Lucene Docs. Or for SOLR Solr Docs.
I hope a got your problem right.
Hope it helps :-)