I have a key in my document whose structure is as follow:
"tag": [
{
"schemeName": "http:\/\/somesite.com\/categoryscheme2",
"name": "Test Tag2",
"value": 1,
"slug": "test_tag2"
},
{
"schemaName": "http:\/\/somesite.com\/categoryscheme3",
"name": "Test Tag3",
"value": 1,
"slug": "test_tag3"
}
]
Now, I get inputs as tag=test_tag2ANDtest_tag3. How can I write a query for this?
I tried to iterate through the loop but I didnt got any results.
Correct me if I am wrong but you don't need an $and or $elemMatch, instead:
$mongodb->collection->find(array('tags.slug'=>array(
'$in' => array('test_tag2','test_tag3'))))
Should work, however, if your English suggests what a second read does, then you can also use $all in place of $in. This will ensure that all root documents must have those slugs in them.
use $elemMatch operator to match elements inside the array.
Related
I have this json value that I want to be sorty but for some reason it's not working.
[
{
"id": 15028,
"order_id": 342,
"user_id": 3,
"status": "1",
"priority": "1",
"donedate": null,
"user": {
"id": 3,
"name": "Max"
}
},
{
"id": 15030,
"order_id": 341,
"user_id": 4,
"status": "2",
"priority": "1",
"donedate": null,
"user": {
"id": 4,
"name": "Jon"
}
}
]
This jSon structure is the result of Laravel eloquent object conversion using $object->toJson();
Now I keep this output in my Redis cache. What I want is to when the status and or priority of any order gets changed then I want to sort this jSon and store it back in Redis.
$order_list = collect($json_decoded_with_updated_values);
$order_list = $order_list->sortBy('status')->sortBy('priority');
Redis::set(\GuzzleHttp\json_encode($stich_list_in_collection));
Redis::set("orders_list", $orders_list, 302400);
However, I don't get a sort list. What I want to achieve is that, just like I would run two to three orderBy on an eloquent model like orderBy('status')->orderBy('priority')->get() .. I want to run the same two sortings on this json list.
Thanks in advance.
I figured it out. Actually we don't need to have a call-back as suggested by #brokedid. We can do it like following.
$order_list->sortBy('status')->sortBy('priority')->values()->all();
So I was missing the "->values()->all()" part. I hope if any one runs into the same problem in future, they can get a hint from this.
If you want to sort by multiple Fields, then you could try to sort with a callback-method:
$orderedList = $unorderedList->sortBy(function($item) {
return $item->priority.'-'.$item->status;
});
I wonder what's the result when you choose a different sort direction.
$order_list = $order_list->sortByDesc('status');
Hi i'm really mongodb newbie.
I have a document like this:
{
"_id": ObjectId("53182e32e4b0feedb1dea751"),
"solutions": [
[
{
"solution": "Double Room Economy (Without Breakfast)",
"board": "Room Only",
"id": "HK-15501871",
"price": 5000,
"available": "1",
"CXL": "[]",
"unique": 0
},
{
"solution": "Double Room Economy (With Breakfast)",
"board": "Room Only",
"id": "HK-15501871",
"price": 4600,
"available": "1",
"CXL": "[]",
"unique": 1
},
{
"solution": "Double Room Economy (Room Only)",
"board": "Room Only",
"id": "HK-15501871",
"price": 5500,
"available": "1",
"CXL": "[]",
"unique": 2
}
]
]
}
And i need to update the field CXL inside the second array of solutions.
so solutions.1.CXL
This is how i take document:
$collection = $this->getCollection();
$query = array("_id"=>new MongoId($id));
$document = $collection->findOne($query);
now i need to update that field without touch the other.
How can i do?
Thanks!
SOLVED THANKS TO #Sammaye
i solved in this way:
$collection->update(
array('_id' => new MongoId('..')),
array('$set' => array('solutions.0.1.CXL' => 'something'))
);
Edit
To actually update by the first index then you can do:
$db->collection->update(
['_id' => new \MongoId($id)],
['$set' => ['solutions.0.1.CLX' => 'whatever']]
);
I misread the question in posting the information below:
So what you wanna update all CXL fields in the document (since you are only searching by top level document _id)?
That isn't possible without manually pulling this document out and iterating the subdocuments in the solutions field and then resaving it.
This is becausde there is currently no way of saying, "Update all that match"
This, however, is most likely the JIRA you would want to look for: https://jira.mongodb.org/browse/SERVER-1243
As long as you know you are going to update the second element then use the index of the array to do so. But that problem next. First you need the $set operator in order not to blow away your document and just set the field value:
db.collection.update(
{ _id: ObjectId("53182e32e4b0feedb1dea751") },
{ $set: { "solutions.0.1.CXL": [ 1, 2, 3 ] } }
)
If you just want to add to the array rather than replace the whole thing, then just use $push instead:
db.collection.update(
{ _id: ObjectId("53182e32e4b0feedb1dea751") },
{ $push: { "solutions.0.1.CXL": 4 } }
)
If you are paying attention to the notation, then you will notice that the array index values are present in the field to be updated. There is a very good reason for this, which can be read on the documentation for the positional $ operator.
The issue is that you have a nested array, which as the documentation refers to, causes a problem if you try to match items within that nested array. That problem is, if you try to use the "positional" operator to find the matched index of something you look for in a query, then it will contain the value of the first array index match that it finds.
In this case that would be your "top level" array and the "found" index is 0 and not 1 as you may expect.
Please be aware of this issue if you intend to use nested arrays.
You can update like this:
update({
_id: ObjectId("53182e32e4b0feedb1dea751"),
solutions.id: HK-15501871,
solutions.CLX: "Whatever!",")
},{
$set: {"comments.$.type": abc}
}, false, true
);
You may want to go through this once
http://docs.mongodb.org/manual/reference/method/db.collection.update/
I want to use the data from array A (below), but only when the item ID from array A does NOT match an ID from items in array B (also, below). How would I go about comparing these two JSON array's by the key of ID (from items) via PHP? I imagine I first need to convert them with json_decode, but I'm not sure where to go after that?
Please note that array B has more nests ("items", "something", & "posts"), unlike array A. I want to compare the ID from items, not posts.
Array A:
{
"data": [{
"category": "Games",
"id": "45345"
},
{
"category": "Music",
"id": "345345345"
},
{
"category": "Food",
"id": "1"
},
{
"category": "Pets",
"id": "13245345"
}]
}
Array B:
{
"data": {
"something": "blah",
"posts": [{
"id": "34241",
"title": "orange"
}],
"items": [{
"id": "1",
"name": "orange"
},
{
"id": "2",
"name": "dog"
},
{
"id": "3",
"name": "cat"
},
{
"id": "4",
"name": "apple"
}]
}
}
With the case above, it would run through array A and output everything from array A except for the third item, since the id of that item (1) matches one of the id's in array B items.
Based on my understanding, you need a two step process. The first is extracting the ids from the first JSON blob, and the second is filtering the second JSON blob. So basically, we have map and filter. And it just so happens we can use PHP's inbuilt functions for this:
$ids = array_map(
function($value) {
return $value['id'];
},
$array2['data']['items']
);
First, we flatten the second array's items element into the individual ids. We "map" over the data.items array, and return the $id attribute of each array. Now, we have an array of ids...
$new = array_filter(
$array1['data'],
function($var) use ($ids) {
return !in_array($var['id'], $ids);
}
);
Now, we use that to filter the first blobs array to determine if an element is new or not. So we use array filter to handle it for us. All we need to do is check the $ids array to see if the current data's id is there (and if it is, throw it away). So we want to filter the array to be only variables that are not in array of $ids (hence !in_array($var['id'], $ids)...)
Decode the items into PHP arrays. Use a SPL like array_diff() to get the results of a diff comparison.
Referances to get you started:
http://www.php.net/manual/en/function.array-diff.php
http://php.net/manual/en/function.array-diff-key.php
http://www.php.net/manual/en/function.json-decode.php
Should be about what your looking for
I have the following mongodb object:
{
"_id": ObjectId("4d0b9c7a8b012fe287547157"),
"messages": {
"0": {
"toUname": "Eamorr3",
"fromUname": "Eamorr2",
"time": 1292606586,
"id": "ABCDZZZ",
"subject": "asdf",
"message": "asdf",
"read": 0 //I want to change this to 1!
},
"1": {
"toUname": "Eamorr1",
"fromUname": "Eamorr3",
"time": 1292606586,
"id": "EFGHZZZ",
"subject": "asdf2",
"message": "asdf2",
"read": 0
}
},
"uname": "Eamorr3"
}
How do I set "read" to 1 where id=ABCDZZZZ? I'm using PHP.
I've tried the following command:
$driverInboxes->update(array('uname'=>$uname),array('$set'=>array('messages'=>array('id'=>$id,'read'=>'1'))));
But when I do this, overwriting occurs and I get:
{
"_id": ObjectId("4d0b9c7a8b012fe287547157"),
"messages": {
"id": "j7zwr2hzx14d3sucmvp5",
"read": "1"
},
"uname": "Eamorr3"
}
I'm totally stuck. Any help much appreciated.
Do I need to pull the entire array element, modify and and push it back in again?
Many thanks in advance,
If you read your command, you're actually saying: "UPDATE WHERE uname = Eamorr3 SET messages equal to this array (id=blah,read=1)"
When you do a $set on messages, you're basically instructing it to take your array as the new value.
However, it looks like you're trying to update a specific message as read which is just a little more complex. So there are two hurdles here:
1: You're actually updating messages.0.read
If you do array('$set' => array( 'messages.0.read' => 1 ) ), you will update the correct element. Follow that chain, messages is a javascript object and you want to update the property 0. The property 0 is itself a javascript object which contains the property read which you want to update.
Can you see how you're updating messages.0.read?
This brings us to problem #2.
2: the 0 is a problem for you
If you look at the way you've structured the data in Mongo, the messages object is really sub-par. The "0" and "1" are currently acting as "ids" and they're not very useful. Personally, I would structure your objects with the actual IDs in place of "0" or "1".
So your objects would look like the following:
{
"_id": ObjectId("4d0b9c7a8b012fe287547157"),
"messages": {
"ABCDZZZ": {
"toUname": "Eamorr3",
"fromUname": "Eamorr2",
"time": 1292606586,
"subject": "asdf",
"message": "asdf",
"read": 0 //I want to change this to 1!
}
},
"uname": "Eamorr3"
}
Now you're update command becomes this:
array('$set' => array( 'messages.ABCDZZZ.read' => 1 ) )
This structure makes it much easier to update a specific message or a specific portion of a message.
If you want to keep the array structure for various purposes, you can use the Positional operator. This enables you to take advantage of array features ($pop,$push,etc) while simultaneously being able to update elements which are in an unknown array position.
I've been trying to figure out how to reformat multiple JSON files into a single one using php, but am having a difficult time understanding how to use complex regular expressions. Suppose I hade multiple instances of the following JSON data:
{
"felines": {
"cats": [
{
"age": 7,
"name": "frank"
},
{
"age": 4,
"name": "popeye"
}
]
},
"canines": {
"dogs": [
{
"age": 2,
"name": "lucy"
},
{
"age": 12,
"name": "wilson"
}
]
}
}
Lets say I had 2 instances of this JSON object in a php script, and wanted to create a single JSON object that combined both "feline" objects from the two separate JSON instances I had, removing the "canines" objects. The file I'd ultimately want would look like this:
{
"felines": {
"cats": [
{
"age": 7,
"name": "frank"
},
{
"age": 4,
"name": "popeye"
}
]
},
"felines": {
"cats": [
{
"age": 6,
"name": "sam"
},
{
"age": 4,
"name": "kelly"
}
]
}
}
Does anyone know how i might be able splice and combine these JSON objects with regular expressions using php?
Thanks.
why don't you use json_encode & json_decode to do the works on php arrays seems to be a lot more easy then doing that with regular expressions.
I doubt this is a problem you should try to solve with regexes. Consider converting the JSON files to associative arrays, do your merging, and then change back to JSON.
Regular expressions are, in general, really bad at dealing with arbitrarily nested contexts like JSON data, HTML tags, programming languages, etc. Some extended regular expression libraries patch around those deficiencies.
But, really, is there a reason you need to do this in JSON itself? And with regex? You're probably going to have a much easier time deserializing the data to real PHP data structures, and merging/manipulating things there. Then, when you're done, re-serialize the result.
The best way to do it would be as RageZ suggested, using json_encode and json_decode, however JSON doesn't allow you to have the same key name, does it? The best you can get would be this:
{
"felines": {
"cats": [
{
"age": 7,
"name": "frank"
},
{
"age": 4,
"name": "popeye"
},
{
"age": 6,
"name": "sam"
},
{
"age": 4,
"name": "kelly"
}
]
}
}