I have an array of articles with array of tags with references:
_type: "article",
tags: [
{
_id: "123",
_rev: "123",
_type: "articleTag",
key: { _type: "slug", current: "news" },
title: "News",
_type: "string"
},
...
],
Trying to create a query of all articles contains an array of several tags:
*[ _type == "article" && tags[].key.current in *["news, news2"]._id ]{...,"tags": tags[]->}
But I get en error: No function in() defined for arguments (array, array)
*[ _type == "article" && ("news" in tags[]->key.current || "news2" in tags[]->key.current)]{...,"tags": tags[]->}
I've got help from sanity-io-land very fast.
Related
Let's say I have a MongoDB collection "people" that has the form
[
{
_id: [OBJECT_ID_1],
name: "Paul",
hobby: "rowing",
fixed: 1
},
{
_id: [OBJECT_ID_2],
name: "Selena",
hobby: "drawing",
fixed: 2
},
{
_id: [OBJECT_ID_3],
name: "Emily",
hobby: "jogging",
fixed: 3
}
]
And new data to be inserted of the form
var data = [
{
name: "Paul", // name exists, so keep "fixed" at 1
hobby: "archery",
fixed: 4
},
{
name: "Peter",
hobby: "knitting",
fixed: 5
}
]
I would like to insert/update the collection with the new data. However, if a document with the same "name" already exists, I do not want to update "fixed". The result after inserting the above data should be
[
{
_id: [OBJECT_ID_1],
name: "Paul",
hobby: "archery", // updated
fixed: 1 // not updated, because name existed
},
{
_id: [OBJECT_ID_2],
name: "Selena",
hobby: "drawing",
fixed: 2
},
{
_id: [OBJECT_ID_3],
name: "Emily",
hobby: "jogging",
fixed: 3
},
{ // newly inserted document
_id: [OBJECT_ID_4],
name: "Peter",
hobby: "knitting",
fixed: 5
}
]
The data includes a large number of documents, so I would like to achieve this in one query if possible. What would be the best way to accomplish this? Many thanks!
bulkWrite with updateOne's with $upsert:true seems to work best for you...
bulkWrite not perform a Find operation.
Its (in my case) is necessary to control if it will create a another document.
In my case I just use find check before insert/create method.
if (collection.find({"descr":descr}).limit(1).length === 1) {
//...create method
console.log('Exists')
}
I made the following filter in hopes that I would be combining the results from all 3 $and arrays but it is only matching one of those blocks.
How can I combine the results of what would be returned from each $and array if conditions are met. Hopefully that's clear. I don't know what to call the $and array.
const filter = {
$or: [
{
$and: [
{ category: req.query.category },
{ tags: req.query.subCategory },
{contentType: req.query.contentType},
req.query.searchTerm !== ""
? {
name: {
$regex: "(?i)" + req.query.searchTerm + "(?-i)",
$options: "i",
},
}
: {},
],
$and: [
{ category: req.query.category },
{ tags: req.query.subCategory },
{contentType: req.query.contentType},
req.query.searchTerm !== ""
? {
description: {
$regex: "(?i)" + req.query.searchTerm + "(?-i)",
$options: "i",
},
}
: {},
],
$and: [
{ category: req.query.category },
{ tags: req.query.subCategory },
{contentType: req.query.contentType},
req.query.searchTerm !== ""
? {
tags: {
$regex: "(?i)" + req.query.searchTerm + "(?-i)",
$options: "i",
},
}
: {},
],
},
],
};
await Content.paginate(filter, options, (err, result) => {
if (err) {
res.status(500).send(err);
} else {
res.json(result);
}
});
EDIT: Below is an example of two entries that would be found in the database. The way it should work is it should use category, subCategory, and contentType to filter out the entries in the database so that what I have now are only the entries which have the same category, subCategory, and contentType as specified in req.query, I'll call this the firstFilterResult. From there, I am trying to search within firstFilterResult to see if I have entries that have name, tag, or description matches. So basically catgeory, subCategory and contentType are just used to narrow down the results so that I can find matches for name, tag, and description. My code above doesn't do exactly this but this is the idea behind it and I thought that what I have would do similar, but I guess I'm wrong.
contents: [
{
tags: [
'food',
'drinks',
'card',
'account'
],
_id: '1d13ff7m6db4d5417cd608f4',
name: 'THE NAME FOR THIS PIECE OF CONTENT',
description: 'In here I will begin to talk about...',
content_id: '5dbcb998ad4144390c244093',
contentType: 'quiz',
date: '2019-06-03T04:00:00.000Z',
category: 'food',
image: 'https://IMAGE.PNG',
__v: 0
},
{
tags: [
'computer',
'laptop'
],
_id: '7d1b940b1c9d44000025db8c',
name: 'THE NAME FOR THIS PIECE OF CONTENT',
description: 'This is another description',
content_id: '5f1b963d1c9d44000055db8d',
contentType: 'tool',
date: '2019-06-03T04:00:00.000Z',
category: 'money',
image: 'https://IMAGE.PNG',
__v: 0
}
]
I finally got it to work with this
const catFilter =
req.query.category !== "" ? { category: req.query.category } : {};
const subCatFilter =
req.query.subCategory !== "" ? { tags: req.query.subCategory } : {};
const typeFilter =
req.query.contentType !== ""
? { contentType: req.query.contentType }
: {};
const filter = {
$and: [
{
$or: [
{
name: {
$regex: req.query.searchTerm,
$options: "i",
},
},
{
description: {
$regex: req.query.searchTerm,
$options: "i",
},
},
{
tags: {
$regex: req.query.searchTerm,
$options: "i",
},
},
],
},
catFilter,
subCatFilter,
typeFilter,
],
};
Since each element of the $or contains the same 3 checks with a single one that varies, these can be separated out, and the $or is then only needed if a search term is specified.
Passing options:"i" makes the entire regex match case insensitive, so it is not necessary to surround the search string with (?i) and (?-i)
The following should build the filter that you are attempting, without using empty objects:
// base query that checks the common fields
var filter = {
category: req.query.category,
tags: req.query.subCategory,
contentType: req.query.contentType
};
// if a search term is provided, add in the additional critera
if (req.query.searchTerm !== "") {
var regex = {
$regex: req.query.searchTerm,
options:"i"
};
filter['$or'] = [
{ name: regex },
{ description: regex },
{ tags: regex }
]
}
If this doesn't obtain the results you're after, please edit the question and add in some sample documents so we can see the problem.
I have the following schema into my DB:
{ name: 'AFG',
documents: [
{ name: 'doc1',
templates: [
{ name: 'templ1',
lastModified: <Date>},
...]
},
...]
}
I am trying to make a query to look for the template with name 'templ1'. If I find it, I have to compare the last modification date with another and update the value. If I don't find it, I have to push it into the array.
I have tried to do it with the following query:
Country.findOne({name : countrySelected, documents : {$elemMatch: {name: documentSelected}}, 'documents.templates' : {$elemMatch: {name: templateSelected}}}, function(err, templateFound){...}
But I get the following error:
MongoError: cannot use the part (documents of documents.templates) to traverse the element ({documents: [ { name: "Passport", templates: [] }, { name: "Visa", templates: [] }, { name: "Driver's Licence", templates: [] }, { name: "Id Card", templates: [] }, { name: "Other", templates: [] } ]})
Someone knows how can I do it? Thanks!!
You have to use the $in operator to search in arrays.
Country.findOne({
name : countrySelected,
documents: {
$elemMatch: {
$and: [{
name: {
$in: documentSelected //<-- must be array like ['doc1']
}
}, {
'templates.name': {
$in: documentSelected //<-- must be array like ['tmpl1']
}
}]
}
}
}, function(err, templateFound){
//do something with err and templateFound
});
To update the LastModified date you need to update it in the callback function and save the document.
See this answer for nested array updates
In my sample document, I have a campaign document that contains the _id of the document and an importData array. importData is an array of objects containing a unique date and source value.
My goal is to have an object updated with a unique date/source pair. I would like to have the new object replace any matching object. In the example below, Fred may have originally donated a TV, but I want my application to update the object to reflect he donated both a TV and a radio.
// Events (sample document)
{
"_id" : "Junky Joe's Jubilee",
"importData" : [
{
"date": "2015-05-31",
"source": "Fred",
"items": [
{item: "TV", value: 20.00},
{item: "radio", value: 5.34}
]
},
{
"date": "2015-05-31",
"source": "Mary",
"items": [
{item: "Dresser", value: 225.00}
]
}
]
}
My original thought was to do something like the code below, but not only am I updating importData with Fred's donations, I'm also blowing away anything else in the importData array:
var collection = db.collection("events");
collection.update(
{_id: "Junky Joe's Jubilee",
importData: {
date: "2015-05-31",
source: 'Fred'
},
}, // See if we can find a campaign object with this name
{
$set:
{"importData":
{
date: "2015-05-31",
source: 'Fred',
items: [
{item: "TV", value: 20.00},
{item: "radio", value: 5.34}
]
}
}
},
{upsert: true}); // Create a document if one does not exist for this campaign
When I tried pushing (instead of $set), I was getting multiple entries for the date/source combos (e.g. Fred would appear to have donated two items multiple times on "2015-05-31").
How would I go about doing that with the MongoDB native driver and NodeJS?
Try this
var collection = db.collection("events");
collection.update(
{_id: "Junky Joe's Jubilee",
importData: {
date: "2015-05-31",
source: 'Fred'
},
}, // See if we can find a campaign object with this name
{
$set:
{"importData.$":
{
date: "2015-05-31",
source: 'Fred',
items: [
{item: "TV", value: 20.00},
{item: "radio", value: 5.34}
]
}
}
},
{upsert: true}); // Create a document if one does not exist for this campaign
According to the documentation under Array update operators this should only modify the first element in the array, which matches the query.
Lets say that I have the following document in the books collection:
{
_id:0 ,
item: "TBD",
stock: 0,
info: { publisher: "1111", pages: 430 },
tags: [ "technology", "computer" ],
ratings: [ { _id:id1, by: "ijk", rating: 4 }, {_id:id2 by: "lmn", rating: 5 } ],
reorder: false
}
I would like to update the value of ratings[k].rating and all I know is the id of the collection and the _id of the objects existing in the array ratings.
The tutorial of mongoDB has the following example that uses the position of the object inside the array but I suppose that if the update can only be done by knowing the position, this means that I firstly have to find the position and then proceed with the update? Can I do the update with only one call and if so how I can do that?
db.books.update(
{ _id: 1 },
{
$inc: { stock: 5 },
$set: {
item: "ABC123",
"info.publisher": "2222",
tags: [ "software" ],
"ratings.1": { by: "xyz", rating: 3 }
}
}
)
Sorry for late answer; I think this is what you want to do with mongoose.
Books.findOneAndUpdate({
_id: 1,
'ratings._id': id1
},
{
$set: {
'ratings.$.rating' : 3
}
}, function(err, book){
// Response
});
Positional operator may help you:
db.books.update(
// find book by `book_id` with `rating_id` specified
{ "_id": book_id, "ratings._id": rating_id },
// set new `value` for that rating
{ $set: { 'ratings.$.rating': value }}
);
$ will save position of matched document.