I have an array with products(objects) inside. It looks like:
[
{_id: 123, name:'first', category:'Vape', property:[
{key:'brand', values:'Eleaf'},
{key:'mechmode', values:'some'},
{key:'color', values:['red', 'blue']},
{key:'batrtype', values:'some2'},
]},
{_id: 1234, name:'second', category:'Vape1', property:[
{key:'brand', values:'Eleaf1'},
{key:'mechmode', values:'some'},
{key:'color', values:['black']},
{key:'batrtype', values:'some2'}
]},
{_id: 12345, name:'third', category:'Vape3', property:[
{key:'brand', values:'Eleaf3'},
{key:'mechmode', values:'some'},
{key:'color', values:['green', 'yellow']},
{key:'batrtype', values:'some2'}
]},
{_id: 123456, name:'fourth', category:'Vape', property:[
{key:'brand', values:'Eleaf'},
{key:'mechmode', values:'some'},
{key:'color', values:['red', 'green']},
{key:'batrtype', values:'some2'}
]}
]
Request from client
{category:'Vape', body:{brand:'Eleaf', color:'red'}}
How should I do an aggregate in mongo to get products which have brand = 'Eleaf'
and color = red in according to request?
Can somebody help please?
bgraham's answer is exactly right if you are using find. To do the same thing in an aggregation pipeline, use $match, such as:
db.aggregate([{$match:{
category: "Vape",
$and: [
{ property: { $elemMatch: { key: "brand", value: "Eleaf" },
{ property: { $elemMatch: { key: "color", value: "red" }
]
}}])
You could then add to the array any additional pipeline stages you need.
I think this should do the trick:
db.products.find({
category: "Vape",
$and: [
{ property: { $elemMatch: { key: "brand", value: "Eleaf1" },
{ property: { $elemMatch: { key: "color", value: "red" }
]})
I'm not sure the structure of your data is best practice. It might be easier if they were fields called "brand" with a value of "color" instead of key/value pairs.
Related
My data looks like this
{
"_id": "62f77d806f24c09f0acae163",
"name": "Test product",
"attributes": [
{
"attribute_name": "Shape",
"attribute_value": "Square"
},
{
"attribute_name": "Color",
"attribute_value": "Red"
}
]
}
I am using the aggregate method to filter results where I want to find products where "attribute_name" is "shape" and the "attribute_value" is "Square" AND "attribute_name" is "Color" and the "attribute_value" is "Red"
Basically I am building a filter feature in my application and basis the data passed to the API I want to get the products.
I have tried this:
let lookup = {
$match: {
$and: [
{
'attributes.attribute_label': 'Shape',
'attributes.attribute_value': {
$in: ['Square']
},
},
{
'attributes.attribute_label': 'Color',
'attributes.attribute_value': {
$in: ['Red']
},
}
],
}
};
let products = await productsModel.aggregate(lookup);
At first it seemed like it worked, but then I noticed it doesn't work properly, it matches
'attributes.attribute_value': {
$in: ['Red']
},
so if it finds "Red" in "attribute_label" which can be anything other than "Color" it will still return the results.
Any help is appreciated
I want to be able to get results based on the values for each attribute name
For e.g data passed might be this
Shape=Square,Color=Red,Green
I want to get the products which matches this, where the object with attribute_label of Color contains the attribute_value of Red or Green.
Is it a typo? Once you are using "attributes.attribute_label" and once "attributes.attribute_name".
This should work with attributes.attrubite_name (not label!)
[
{
'$match': {
'$and': [
{
'attributes.attribute_name': 'Shape'
}, {
'attributes.attribute_value': {
'$in': [
'Square'
]
}
}, {
'attributes.attribute_name': 'Color'
}, {
'attributes.attribute_value': {
'$in': [
'Red'
]
}
}
]
}
}
]
Hello I've been trying to select all the subdocument of multiple document returned in ONE single object and if it's possible sorted by value.
Here is what I mean :
My collection :
{
userId: 1,
...
items : [
{name: "candle", value:5},
{name: "shoes", value: 200}
]
},
{
userId: 2,
...
items : [
{name: "burger", value:17},
{name: "car", value: 5000}
]
},
{
userId: 3,
...
items : [
{name: "chips", value:2},
]
}
And I want to make a query that return me something like that :
[
{userId:1, name: "candle", value:5},
{userId:1, name: "shoes", value: 200},
{userId:2, name: "burger", value:17},
{userId:2, name: "car", value: 5000},
{userId:3, name: "chips", value:2}
]
I've been trying this :
Mymodel.find({}).select("items"); //It return me all the items but in separate object. [ {items: []} ...]
Also if it is possible I would like to sort them : I want to get the 3 most valuable items in the users collection. I tried to use the aggregate method following some example in the mongoose doc but I didn't succeed to make it work. I also have been thinking to make a new database containing only the users items so I can sort them easily but I feel like there is a better solution to do this.
So my question is do you have an idea how could I make it work ? thank you in advance
I'm pasting just an option
var pipeline = [
{
"$unwind" : "$items"
},
{
"$addFields" : {
"name" : "$items.name",
"value" : "$items.value"
}
},
{
"$unset" : "items"
},
{
"$project" : {
"_id" : 0,
"name" : 1,
"value" : 1,
"userId" : 1
}
}
]
Run db.collname.aggregate(pipeline) or review the syntax for the driver.
I have successfully implement type ahead using angular js using this codepen.
Now my data is dynamic so I want to create my own json that should looks something like following:
$scope.states = [
{
name: "ABCD",
id: "AB"
},
{
name: "XYZ",
id: "XY"
},
{
name: "OPQR",
id: "OP"
},
{
name: "LMNO",
id: "LM"
},
{
name: "KLM",
id: "KL"
}
];
How to create like above json and store in $scope variable so I can access it using name and id separately.
Please help me...!!
I am giving by my own now cause I got it little bit late.
Solution is I have pushed the data wrong I have solved it like:
$scope.states.push({
name: "string",
id: int,
});
and I got it.
Hello I have the following JSONs
$scope.Facilities=
[
{
Name: "-Select-",
Value: 0,
RegionNumber: 0
},
{
Name: "Facility1",
Value: 1,
RegionNumber: 1
},
{
Name: "Facility2",
Value: 2,
RegionNumber: 1
},
{
Name: "Facility3",
Value: 3,
RegionNumber: 2
}
];
$scope.Regions=
[
{
Name: "-Select-",
RegionNumber: 0
},
{
Name: "USA",
RegionNumber: 1
},
{
Name: "Mexico",
RegionNumber: 2
}
];
I would have two DropdownLists in my app which will have one of these Jsons assigned to it.
Whenever you select a Region, a ng-change would be triggered. What I want, is to make the Facility DDL to update it's values. It would only show the Facilities which have a RegionNumber equivalent to the selected Region's RegionNumber.
How could I achieve this? I'm using Angular JS, MVC...
Note: The -Select- Value must always appear, even if it's value is zero and is not equivalent to the selected Region.
While a data structure, like greengrassbluesky may simplify the result, you can accomplish the same thing with an onchange that leverages javascript filtering
$scope.Facilities = masterFacilities.filter(function (el) {
return regionNumber = el.RegionNumber == $scope.SelectedRegion || el.RegionNumber == 0;
});
Here's a fiddle with an example using your lists.
I think you need a data structure like below:
$scope.Regions=
[
{
Name: "-Select-",
facilities : {
facilityId: 1,
facilityName: "facility1"
},
{
facilityId: 2,
facilityName: "facility2"
}
},
{
Name: "USA",
facilities : [{
facilityId: 1,
facilityName: "facility1"
},
{
facilityId: 2,
facilityName: "facility2"
}]
},
];
So, you could reference them like below:
For the dropdown of Regions, you can iterate through above Data structure.
Store the selectedRegion in selectedRegion
Then use that for the dropdown for facilities.
I have some data that looks like this (not real data):
{
_id:'cust04',
name:'Diarmuid Rellis',
address:'Elysium, Passage East',
county:'Waterford',
phone:'051-345786',
email:'dreil#drarch.com',
quotations:[
{
_id:'quot03',
supplier_ref:'A2006',
date_received: new Date('2013-05-12T00:00:00'),
date_returned: new Date('2013-05-15T00:00:00'),
supplier_price:35000.00,
customer_price:35000.00,
orders:[
{
_id:'ord03',
order_date: new Date('2013-05-20T00:00:00'),
del_date: new Date('2013-08-12T00:00:00'),
del_address:'Elysium, Passage East, Co. Waterford',
status:'BALPAID'
}
]
},
{
_id:'quot04',
supplier_ref:'A2007',
date_received: new Date('2013-08-10T00:00:00'),
date_returned: new Date('2013-08-12T00:00:00'),
supplier_price:29600.00,
customer_price:29600.00,
orders:[
{
_id:'ord04',
order_date: new Date('2014-03-20T00:00:00'),
del_date: new Date('2014-05-12T00:00:00'),
del_address:'Elysium, Passage East, Co. Waterford',
status:'INPROD'
}
]
}
]
}
I am trying to unwind the quotations and orders arrays, and get a projection of all orders in production which include the customer name, supplier_ref and order date for each.
Here is my query:
db.customers.aggregate([
{ $unwind: "$quotations" },
{ $unwind: "$quotations.orders" },
{ $match: { 'quotations.orders.status': 'INPROD' } },
{
$project: {
name: 1,
supplier_ref: "$quotations.supplier_ref",
order_id: "$quotations.orders._id",
order_date: "$quotations.orders.order_date"
}
},
{
$group: {
_id: "$order_id"
}
}
], function (err, results) {
console.log(results);
})
The query runs successfully, but just gives the order ids, not any of the other fields required. What am I missing ?
EDIT
I am hoping for a result like:
"result": [
{
"_id" : "orderid01",
"name" : "Joe Bloggs",
"supplier_ref" : "A1234",
"date_ordered" : "2012-04-14"
},
{
"_id" : "orderid02",
"name" : "Joe Bloggs",
"supplier_ref" : "A1235",
"date_ordered" : "2012-04-16"
}
]
When I add an extra field to my 'group' function, like so:
$group: {
_id: "$order_id",
supplier_ref: "$supplier_ref"
}
I get the error: "the group aggregate field 'supplier_ref' must be defined as an expression inside an object". Do I have to associate it with the result object in some way ?
Removing the group function altogether produced the results I wanted.