I am new to MongoDb and I've made a simple PHP filtering application (similar to TAGS)
I Have a collection which is called "Filters"
Inside of it, each record looks like this:
"_id" : ObjectId("5274da3e040b61fa15000001"),
"activation" : 1,
"and_or" : "",
"description" : "",
"id" : 13,
"order_id" : 2,
"slug" : [
"apple",
"orange",
"banana"
],
"title" : "Sample"
I take those values from a PHP form and insert them like a record.
The problem is
When I try to remove "orange" from slug, the array breaks and turns into an Object
"slug" : {
"0" : "apple",
"2" : "banana"
},
And I can no longer query it like this, as it returns NULL
db.filters.find({slug: "apple"})
null
I assume that when an array's index is numerically correct, (1, 2, 3, 4) then Mongo will recognize it as an array, otherwise it stores it as an object as custom index is used.
Unfortunately, I cannot change the indexes of the array because they are linked in other documents.
Any ideas?
Thanks!
You are getting null because you might be removing that document using remove method in php.
Instead you need to update slug to array with only apple as its element
db.collection.update($array);
Related
This is the structure for my MongoDB documents
{
"_id" : ObjectId("5aa02da4f6c9bf20da58017b"),
"Name" : "HP Envy",
"Model" : "m6 convertible x360",
"Cost" : 1350,
"Description" : "Sleek and slim laptop designed perfectly for business p
urposes",
"Keywords" : [
"Touchscreen",
"Rotation",
"x360",
"Slim",
"HP"
],
"Reviews" : [
{
"User" : "User 1",
"Comment" : "Great Laptop",
"Rating" : 4.5
},
{
"User" : "User 2",
"Comment" : "Great Laptop",
"Rating" : 4.5
}
]
}
I want to access the data contained inside "Reviews" using php. I can access it normal using
$coll=$db->Product;
$cursor = $coll->find();
and then echo using a foreach to display in a tabular format. But i only know how to access the ID, name etc. How can i access the Reviews inside the object arrays? i tried something like this:
$test=$coll->find(array( 'Reviews.User' => 'User 1' ));
when i try to echo it it gives me an error: Catchable fatal error: Object of class MongoCursor could not be converted to string
I'm lost please help.. I apologize if i repeated the question but i couldn't find it anywhere else
Here I need to insert another array data where there is already an existing record in MongoDB.
Example:
Already existing record in db:
{
"_id" : 1,
"name" : "main",
"sample_details" : [
{
"detail_no" : 1,
"email" : "test#gmail.com",
"name" : "test",
},
{
"detail_no" : 2,
"email" : "test12#gmail.com",
"name" : "test12",
}
],
}
Suppose I need to insert one more array data in "sample_details". Here is my code, but the position operator "$" is not supporting. May I know the exact solution for my query:
Code:
$array = array(
'sample_details.$.detail_no' => 3,
'sample_details.$.email' => "test123#gmail.com",
'sample_details.$.name' => "test123",
);
$this->mongo_db->update(table_name,array('_id'=>1),array('$set'=>$array),array('multiple'=>true));
To insert data into array you want to use operators like $push, $pushAll or $addToSet.
You can't use positional operator because citing its documentation:
the array field must appear as part of the query document.
Also it only makes sense when you're updating an array's element and you don't know its index, not inserting new things.
i actually have a issue with mongodb im trying to update/add a value in a nested array.
{
"_id" : ObjectId("56c37e98aff662100900002a"),
"name" : "michell",
"game" : [{
"name" : "GTA",
"badges" : [{
"name" : "pacifist"
}, {
"name" : "killemall"
}]
}]
}
you can find below the way i tried but actually it just rewrite the badges array of create new game array
$collection->update(array('_id' =>new MongoId($id),'jeux.name'=>$name), array('$set' => array('jeux'=>array('name' => $name,'badges'=>array('name'=>$badge)))));
i can't find the issue here if you could help me
Well i found a solution i don't know if its the best one but it seems like it work
$collection->update(array('_id' =>new MongoId($id),'jeux.name'=>$name), array('$push' => array('jeux.$.badges'=>array('name'=>$badge))));
im using the $ in jeux.$.badges
Here is my JSON Array
{
"_id" : ObjectId("563b57c84abf457b395076f0"),
"project_id" : "563b57c84abf45ce1f5076f1",
"project_task" : [
{
"switch" : "Ball",
"deviceId" : "dasdqwdf124",
"slot" : "2344",
"MigrationStartDate" : "",
"MigrationEndDate" : "",
"MigrationStatus" : "",
"task_id" :12
}
]
}
In this array project_id and task_id (Sub Document element) values are unique.
So in this case i need update my sub document element one at a time When project_id and task_id are equals to given values.
So far i used update function with and condition and findAndModify() function but never worked for me.
Here is my Query using findAndModify()
findAndModify(array('project_id' => "$projectId", 'project_task' => array('task_id' => "$taskId")), array('$set' => array("$column" => "$value")))
Please help me out
I have a collection in mongodb which looks like this.
"_id" : ObjectId("554c5397ccfff21e103c9869"),
"name" : "test",
"color" : [
"552ced22ccfff2d8183c986a_Jellow",
"551fdd24ccfff2362e3c9869_test"
],
"updated_at" : ISODate("2015-05-08T06:11:35.303Z"),
"created_at" : ISODate("2015-05-08T06:11:35.303Z")
I want to update only one value in the array color But when i try to update the array it removes all the values from the color array and replaces it by the new value.
Here is the code. (I AM USING JESSENGER MONGODB PACKAGE FOR LARAVEL)
$query->where($field,'regexp','/^('.$id.')_.*/')->update([$field=>$id.'_'.$name]);
How should i do it.??
What you wanna do is, either change your schema as {key: value} pair and then follow this tutorial, that will help you to sort out your problem. OR you can get all the values from color array and replace with new value and then update your document (I would not go for it coz it is a dirty approach!).
EDIT
Hey Bud! I founded this, on jenssenger docs:
Push
Add an items to an array.
DB::collection('users')->where('name', 'John')->push('items', 'boots');
DB::collection('users')->where('name', 'John')->push('messages', array('from' => 'Jane Doe', 'message' => 'Hi John'));
If you don't want duplicate items, set the third parameter to true:
DB::collection('users')->where('name', 'John')->push('items', 'boots', true);
Pull
Remove an item from an array.
DB::collection('users')->where('name', 'John')->pull('items', 'boots');
DB::collection('users')->where('name', 'John')->pull('messages', array('from' => 'Jane Doe', 'message' => 'Hi John'));
You need to use the $set operator. Not sure how it's done in Jessenger Mongodb, but it might be something like:
$query->where($field,'regexp','/^('.$id.')_.*/')
->update(['$set' => [ $field=>$id.'_'.$name]]);
Why don't change your data like this:
"_id" : ObjectId("554c5397ccfff21e103c9869"),
"name" : "test",
"color" : [
{ "id":"552ced22ccfff2d8183c986a", "name":"Jellow"},
{ "id":"551fdd24ccfff2362e3c9869", "name":"test"}
],
"updated_at" : ISODate("2015-05-08T06:11:35.303Z"),
"created_at" : ISODate("2015-05-08T06:11:35.303Z")
then you can update element by id.