How can i use _id in $in.
array('name' => array(
'$in' => array('name1', 'name2')
))
This is how $in is used in mongodb. But i dont know how to use $in with _id.
I used
array('_id' => array(
'$in' => new MongoId(array(My Ids))
))
But it didn't work. Please let me know if any one knows the answer.
Thanks in advance.
You have to provide an array of MongoId's and not an MongoId of array (which is not possible).
So you have to preprocess you array before query or keep these ids as MongoId
you can use array_map for that, or foreach.
Related
Hi i am working on backend of web application & want to find the documents from mongodb database that contain key active_status with value set to both 1 & 2. With mongodb PHP i am confused of how to find with both parameters in single query.
My query was this:
$mongoDb = MongoDbConnector::getCollection("endusers");
$endUserData = $mongoDb->find(array('active_status' => 1, '$and' => array('active_status' => 2)));
I have to fetch the users whose active_status should be 1 & 2. The above query doesnt seems to work. What is the right one for that?
Thanks on advance for quick response.
You have $and the wrong way around. Both arguments need to be included:
$endUserData = $mongoDb->find(array(
'$and' => array(
array( 'active_status' => 1 )
array( 'active_status' => 2 )
)
));
And since that would only make sense when looking for both elements within an array element, then you should instead use $all, which is shorter syntax:
$endUserData = $mongoDb->find(array(
'active_status' => array( '$all' => array(1,2) )
));
I should add that unless you intend to match a document like this:
{ "active_status" => [1,2] }
The you do not in fact want $and at all, but rather you want $or or better yet $in for multiple possible values on the same field:
$endUserData = $mongoDb->find(array(
'active_status' => array( '$in' => array(1,2) )
));
This matches documents like this:
{ "active_status": 1 },
{ "active_status": 2 }
i am working on mongodb & php & want to retrive data based on multiple conditions.
I want to retrive forms whose form_status is both Active & Draft only
My query is:
$formData = $formInfo->find(array('team_id' => $_GET['id'], '$and' =>array('form_status' => 'Active','form_status' => 'Draft')));
It is not working. What could be the right syntax in PHP??
The $and operator takes a "real array" of documents as it's argument. In PHP you wrap the array to produce that kind of syntax:
$formData = $formInfo->find(
array(
'team_id' => $_GET['id'],
'$and' => array(
array( 'form_status' => 'Active' ),
array( 'form_status' => 'Draft' )
)
)
);
Note that this really woudn't make any sense unless "form_status" is actually and array itself. In which case the $all operator is a much cleaner approach:
$formData = $formInfo->find(
array(
'team_id' => $_GET['id'],
'form_status' => array(
'$all' => array( 'Active', 'Draft' )
)
)
);
And again if this field was not an array then you really meant $or but that can also be more clearly written for the same field with $in:
$formData = $formInfo->find(
array(
'team_id' => $_GET['id'],
'form_status' => array(
'$in' => array( 'Active', 'Draft' )
)
)
);
So $all is to $and what $in is to $or, but just allows you to use the same field without specifying the full document form
how can I work with lists within the mongoDB?
For example, I have a document (class), and a list of students in this class, ie a subdocument (students).
What do not you, is to add more students to a class.
in Model:
public function salvar($name,$idClass){
$new = array(
"_id" => $idClass,
"student"=> array(
'idStudent' => new MongoId(),
'name' => $name));
return $this->save($new);
}
But when you add a new student, he is not working that way.
How to perform a $push update
The answer you've provided clarifies what you've been trying to do. However, the solution is a little convoluted. To perform a $push update with MongoDB, simply specify you want to perform a push update:
$this->Foo->save(array(
'_id' => $id,
'$push' => array(
"images" => array(
'id' => new MongoId(),
'name' => $name,
'size' => $size
)
)
);
You can use the mongoNoSetOperator property to achieve the same thing but
It's indirect, therefore not obvious
With multiple calls to save in the same request it can be confusing if it's not reset to $set if it's modified
It prevents using multiple operators in a single call.
There's more information about using different update operators in the documentation.
the answer to the question was:
public function salvar($name,$size,$id){
$this->mongoNoSetOperator = '$push';
// fixed array data structure
$susp = array(
"_id" => $id,
"images"=> array(
array(
'id' => new MongoId(),
'name' => $name,
'size' => $size
)
)
);
return $this->save($susp);
}
Note: Thank Garamon from github, by clear and objective answers.
I am having a problem with mongo db when used in yii framework. I tried both yii extensions yii mong suite and direct mongo suite. I have trouble implementing or operations in mongo with these extension. I used this code in yii mongo suite but its returning all the values.
$userDetail = $user->findAll(
array(
'$or' => array(
"first_name" => "akash",
"first_name" => "anoop"
)
)
); var_dump($userDetail);die;
I dont know how to use or operation with direct mongo suite. Please help me as soon as possible. Thank You.
With the direct MongoDBSuite, providing it implements MongoDB directly, your $or should look like:
$userDetail = $user->findAll(
array(
'$or' => array(
array("first_name" => "akash"),
array("first_name" => "anoop")
)
)
);
I know this is pretty late but let me know if this helps. I'm using YiiMongoDbSuite. You could check to see if the name is in an array.
$criteria = new EMongoCriteria;
$criteria->addCond("first_name","in",array("akash", "anoop"));
Read more here about using the EMongoCriteria Object: http://bit.ly/1oOFPBJ
I would appreciate the help here. For the purpose of this discussion I have an example here (I will use paste bin for the codes):
http://pastebin.com/VPuyKn6W
I am trying to produce this output:
http://pastebin.com/4iMLacRu
I understand that I need to use $push to make this work. But upon testing, it doesn't seem to do anything. I am following the instructions as prescribed in the docs, but instead of using $Id, I am using user_id for finding the document in the collection. Here is my model:
http://pastebin.com/QB94tbZn
Am I misunderstanding something, or I am not using the $push operator properly, or something to do on how I created the document?
After walking outside, I finally got my answer.
public static function create_mongo()
{
$data = array(
'user_id' => '123895',
'First_Name' => 'John',
'Last_name' => 'Doe',
'sites' => array(
array(
'title' => 'Sankaku Complex',
'site' => 'http://sankakucomples.com'
)
)
);
$db = Fuel\Core\Mongo_Db::instance();
$db->insert('test_collection',$data);
}
sites should be an array carrying an array variable.