Sequelize - Nested Query Condition to Top Level - mysql

I want to query a database of promotions that don't have phone number in the blacklist of promotion.
my project use sequelize.org for manage database.
Mock Database http://sqlfiddle.com/#!9/438587/1
Association
Promotion Model
this.belongsToMany(models.CustomerList, {
through: models.BlacklistPromotion,
as: 'Blacklist',
});
this.belongsToMany(models.CustomerList, {
through: models.WhitelistPromotion,
as: 'Whitelist',
});
CustomerList Model
this.belongsToMany(models.CustomerPhoneNumber, {through: models.CustomerListPhoneNumber,});
CustomerPhoneNumber Model
this.belongsToMany(models.CustomerList, { through: models.CustomerListPhoneNumber});
Code sequelize findAndCountAll Promotion
await Promotion.findAndCountAll({
where : {}, <-------- i want query here or somewhere.
include :[
{
model: CustomerList,
as: 'Blacklist',
include :[{
model: CustomerPhoneNumber,
as: 'CustomerPhoneNumbers',
attributes: ['phone_number'],
through: {
attributes: [],
}
}],
through: {
attributes: [],
},
},
{
model: CustomerList,
as: 'Whitelist',
include :[{
model: CustomerPhoneNumber,
as: 'CustomerPhoneNumbers',
attributes: ['phone_number'],
through: {
attributes: [],
}
}],
through: {
attributes: [],
},
}
]
})
when run query
{
"Promotion": [
{
"id": 1,
"title": "Promotion1"
},
{
"id": 2,
"title": "Promotion2"
},
{
"id": 3,
"title": "Promotion3",
"Blacklist": [
{
"id": 1,
"name": "Group5",
"CustomerPhoneNumbers": [
{
"id": 5,
"phone_number": "0877777777"
},
{
"id": 6,
"phone_number": "0888888888"
},
{
"id": 7,
"phone_number": "0899999999"
}
]
}
]
}
]
}
try query
where : {
'$Blacklist.CustomerPhoneNumbers.phone_number$': {
[Op.ne]: '0877777777',
}
}
// output
{
"Promotion": [
{
"id": 1,
"title": "Promotion1"
},
{
"id": 2,
"title": "Promotion2"
},
{
"id": 3,
"title": "Promotion3",
"Blacklist": [
{
"id": 1,
"name": "Group5",
"CustomerPhoneNumbers": [
{
"id": 6,
"phone_number": "0888888888"
},
{
"id": 7,
"phone_number": "0899999999"
}
]
}
]
}
]
}
but i want to remove promotion3
What do you expect to happen?
Find solution query a database of promotions that don't have phone number in the blacklist of promotion.
I want to get:
{
"Promotion": [
{
"id": 1,
"title": "Promotion1"
},
{
"id": 2,
"title": "Promotion2"
},
]
}

Related

Sequelize SUM function return as whole rather than grouping

I was trying to SUM an Review Score on association (relational) table between Post & UserReviews using MySQL, I had SQL like this.
sql
SELECT SUM(`score`) / COUNT(`scoreableId`) FROM `UserReviews` GROUP BY `scoreableId`;
I want convert it into sequelize query builder, I had try like this.
sequelize
db.Post.findAndCountAll({
attributes: [
'id',
],
include: [{
model: db.PostAttribute,
as: 'attributes',
attributes: [
'title',
'description',
],
order: [
['updatedAt', sort.includes('date') ? 'ASC' : 'DESC'],],
include: [{
model: db.PostPhoto,
attributes: ['url'],
as: 'photos'
}, {
model: db.UserReview,
as: 'reviews',
attributes: [
'scoreableId',
[db.sequelize.fn('SUM', db.sequelize.col('rating')), 'rating']
],
group: ['scoreableId']
}]
}],
})
But resulting output from those query was whole SUM of RATING (all users rating as single) inside single row.
{
"data": [
{
"id": 1,
"attributes": {
"title": "Tasty Frozen Salad",
"description": "description goes here",
"photos": [
{
"url": "https://loremflickr.com/500/650/fashion?47655"
}
],
"reviews": [
{
"scoreableId": 1,
"rating": "392"
}
]
}
}
]
}
I was expecting it result were rather like this.
{
"data": [
{
"id": 1,
"attributes": {
"title": "Tasty Frozen Salad",
"description": "description goes here",
"photos": [
{
"url": "https://loremflickr.com/500/650/fashion?47655"
}
],
"reviews": [
{
"scoreableId": 1,
"rating": "50"
}
]
}
},
{
"id": 2,
"attributes": {
"title": "Another Tasty Frozen Salad",
"description": "description goes here",
"photos": [
{
"url": "https://loremflickr.com/500/650/fashion?47655"
}
],
"reviews": [
{
"scoreableId": 2,
"rating": "40"
}
]
}
}
]
}

Make node tree with recursive table with Express and Mongo

I'm working in a REST api with ExpressJS and Mongo and I have a collection with N quantity of levels.
So to solve this problem I'm using an recursive table (or collection) in mongo where a field is the id and every register has a parent_id which is at the same level as it's childs.
To explain better this, here is an E-R representation
So as you se, mongo will save the data like this json (accounts level 0 has null parent)
[
{ "id": "45TYYU", "parent_id": null, "name":"account 1", "type": 1, "category": 1 },
{ "id": "45TYYXT", "parent_id": "45TYYU", "name":"account 2", "type": 1, "category": 1 },
{ "id": "45TYYPZ", "parent_id": "45TYYU", "name":"account 3", "type": 1, "category": 1 },
{ "id": "45TYYPZRE", "parent_id": "45TYYPZ", "name":"account 4", "type": 1, "category": 1 },
{ "id": "45TYYPZSX", "parent_id": "45TYYPZ", "name":"account 5", "type": 1, "category": 1 },
{ "id": "45TYYPZGP", "parent_id": "45TYYXT", "name":"account 6", "type": 1, "category": 1 }
]
account 2 and account 3 are children of account 1, while account 4 and account 5 are children of account tree and account 6 is child of account 2 ... but every register is at the same logical level only identifying through parent_id.
so I need to transform this data into a GET method to restructure it like this:
[
{
"id": "45TYYU",
"parent_id": null,
"name":"account 1",
"type": 1,
"category": 1,
"children": [
{
"id": "45TYYXT",
"parent_id": "45TYYU",
"name":"account 2",
"type": 1,
"category": 1,
"children": [
{ "id": "45TYYPZGP", "parent_id": "45TYYXT", "name":"account 6", "type": 1, "category": 1 }
]
},
{
"id": "45TYYPZ",
"parent_id": "45TYYU",
"name":"account 3",
"type": 1,
"category": 1,
"children": [
{ "id": "45TYYPZRE", "parent_id": "45TYYPZ", "name":"account 4", "type": 1, "category": 1 },
{ "id": "45TYYPZSX", "parent_id": "45TYYPZ", "name":"account 5", "type": 1, "category": 1 }
]
}
]
},
{
"id": "45TFJK",
"parent_id": null,
"name":"account 7",
"type": 1,
"category": 1,
"children": [
{
"id": "47HJJT",
"parent_id": "45TFJK",
"name":"account 8",
"type": 1,
"category": 1
},
{
"id": "47YHJU",
"parent_id": "45TFJK",
"name":"account 8",
"type": 1,
"category": 1
}
]
}
]
Yes... the parents level 0 has null parent_id and I want to put it's children inside an array called "children" and then send like this in the GET response to my UI
What is the best way to do this in expressJS?
Is there a library or component out there that allows me to do this?
Thank you
You can use $graphLookup and other useful array operators,
$match filter that records only have parent_id is null
$graphLookup to get child records and depth number in depthField level
$unwind deconstruct children array and allow to not remove empty children
$sort by depth level field level in descending order
$group by id field and reconstruct children array
db.collection.aggregate([
{ $match: { parent_id: null } },
{
$graphLookup: {
from: "collection",
startWith: "$id",
connectFromField: "id",
connectToField: "parent_id",
depthField: "level",
as: "children"
}
},
{
$unwind: {
path: "$children",
preserveNullAndEmptyArrays: true
}
},
{ $sort: { "children.level": -1 } },
{
$group: {
_id: "$id",
parent_id: { $first: "$parent_id" },
name: { $first: "$name" },
type: { $first: "$type" },
category: { $first: 1 },
children: { $push: "$children" }
}
},
$addFields now find the nested level children and allocate to its level,
$reduce to iterate loop of children array.
initialize default field level default value is -1, presentChild is [], prevChild is [] for the conditions purpose
$let to initialize fields:
prev as per condition if both level are equal then return prevChild otherwise return presentChild
current as per condition if both level are equal then return presentChild otherwise []
in to return level field and prevChild field from initialized fields
presentChild $filter children from prev array and return, merge current objects with children array using $mergeObjects and concat with current array of let using $concatArrays
$addFields to return only presentChild array because we only required that processed array
{
$addFields: {
children: {
$reduce: {
input: "$children",
initialValue: { level: -1, presentChild: [], prevChild: [] },
in: {
$let: {
vars: {
prev: {
$cond: [
{ $eq: ["$$value.level", "$$this.level"] },
"$$value.prevChild",
"$$value.presentChild"
]
},
current: {
$cond: [{ $eq: ["$$value.level", "$$this.level"] }, "$$value.presentChild", []]
}
},
in: {
level: "$$this.level",
prevChild: "$$prev",
presentChild: {
$concatArrays: [
"$$current",
[
{
$mergeObjects: [
"$$this",
{
children: {
$filter: {
input: "$$prev",
as: "e",
cond: { $eq: ["$$e.parent_id", "$$this.id"] }
}
}
}
]
}
]
]
}
}
}
}
}
}
}
},
{
$addFields: {
id: "$_id",
children: "$children.presentChild"
}
}
])
Playground
#turivishal Im using same schema in backend nodejs im getting only show the
null object not for a parent child relation using same aggregration
this.tickets.aggregate([
{
$match: {
parent_id: null
}
},
{
$graphLookup: {
from: "collection",
startWith: "$id",
connectFromField: "id",
connectToField: "parent_id",
depthField: "level",
as: "children"
}
},
{
$unwind: {
path: "$children",
preserveNullAndEmptyArrays: true
}
},
{
$sort: {
"children.level": -1
}
},
{
$group: {
_id: "$id",
parent_id: {
$first: "$parent_id"
},
name: {
$first: "$name"
},
type: {
$first: "$type"
},
category: {
$first: 1
},
children: {
$push: "$children"
}
}
},
{
$addFields: {
children: {
$reduce: {
input: "$children",
initialValue: {
level: -1,
presentChild: [],
prevChild: []
},
in: {
$let: {
vars: {
prev: {
$cond: [
{
$eq: [
"$$value.level",
"$$this.level"
]
},
"$$value.prevChild",
"$$value.presentChild"
]
},
current: {
$cond: [
{
$eq: [
"$$value.level",
"$$this.level"
]
},
"$$value.presentChild",
[]
]
}
},
in: {
level: "$$this.level",
prevChild: "$$prev",
presentChild: {
$concatArrays: [
"$$current",
[
{
$mergeObjects: [
"$$this",
{
children: {
$filter: {
input: "$$prev",
as: "e",
cond: {
$eq: [
"$$e.parent_id",
"$$this.id"
]
}
}
}
}
]
}
]
]
}
}
}
}
}
}
}
},
{
$addFields: {
children: "$children.presentChild"
}
}
]).then((result) => {
console.log('test',result);
// callback(result);
}).catch((error) => {
callback(error);
});
output:
[
{
_id: '45TYYU',
parent_id: null,
name: 'account 1',
type: 1,
category: 1,
children: []
},
{
_id: '45TYYUA',
parent_id: null,
name: 'account 1',
type: 1,
category: 1,
children: []
}
]

MongoDB reduce nested

I have a collection of a class that looks something like that:
[
{
"_id": 1,
"title": "dummy title",
"assignments": [
{
"_id": 1,
"name": "a1",
"members": [
{
"_id": 11,
"full_name": "john doe",
"aga": 18
},
{
"_id": 12,
"full_name": "john doe2",
"aga": 18
}
]
}
],
"settings": [
{
"type": "light",
"status": "enabled"
},
{
"type": "flare",
"status": "disabled"
},
{
"type": "toolbar",
"status": "enabled"
}
]
}
]
I have 2 nested documents here "assignments" which have a nested "members"
and "settings". the result i want should look something like that:
{
"_id": 1,
"title": "dummy title",
"assignments": [
{
"_id": 1,
"name": "a1",
"member_ids": [11, 18]
}
],
"active_settings": ["light", "toolbar"]
}
Meaning in each "assignment" I should only return the ids of the members and not the whole member data. and in settings I should only return the settings that are set to "active"
is it possible?
Playground here:
https://mongoplayground.net/p/Le4BdTm_gOv
You can try with $map to go one by one. $mergeObjects helps to merge the output value with same object
[
{
$project: {
title: 1,
assignments: {
$map: {
input: "$assignments",
in: {
$mergeObjects: [
"$$this",
{
members: {
$map: {
input: "$$this.members",
in: "$$this._id"
}
}
}
]
}
}
},
active_settings: {
$reduce: {
input: "$settings",
initialValue: [],
in: {
$cond: [
{
$eq: [
"$$this.status",
"enabled"
]
},
{
$setUnion: [
"$$value",
[
"$$this.type"
]
]
},
"$$value"
]
}
}
}
}
}
]
Working Mongo playground
You can try,
get assignments member ids using $map and $reduce
get active_settings using $reduce
db.collection.aggregate([
{
$project: {
_id: 1,
title: 1,
assignments: {
$map: {
input: "$assignments",
in: {
_id: "$$this._id",
name: "$$this.name",
memberIds: {
$reduce: {
input: "$$this.members",
initialValue: [],
in: { $concatArrays: ["$$value", ["$$this._id"]] }
}
}
}
}
},
active_settings: {
$reduce: {
input: "$settings",
initialValue: [],
in: {
$cond: [
{ $eq: ["$$this.status", "enabled"] },
{ $concatArrays: ["$$value", ["$$this.type"]] },
"$$value"
]
}
}
}
}
}
])
Playground

Re-arrange JSON file (using adjacency matrix)

I have a json file that looks like this:
[
{
"id": 1,
"country": "Greece",
"names": [
"Alex",
"Betty",
"Catherine",
"Dave",
"Edward",
"Frank",
"George",
"Helen",
"Irene"
]
},
{
"id": 2,
"country": "US",
"names": [
"John",
"Alex",
"Edward",
"Kate",
"Robert",
"Irene",
"Tim",
"Sam"
]
},
{
"id": 3,
"country": "France",
"names": [
"Helen",
"Kate",
"Louise",
"Tim",
"Catherine",
"Arthur",
"Frank",
"Natalie",
"Dave"
]
},
{
"id": 4,
"country": "India",
"names": [
"Ritesh",
"Alex",
"Betty",
"Robert"
]
},
{
"id": 5,
"country": "India",
"names": [
"Nafeez",
"Tom",
"Natalie",
"Gunar",
"Louise",
"Arthur"
]
}
]
I want it to be "name centered" and look like this:
{
"groups": [
{
"gr_id":1
"name":"Alex",
"country":"Greece"
},
.........
{
"gr_id":1
"name":"Irene",
"country":"Greece"
},
{
"gr_id":2
"name":"John",
"country":"US"
..........
{
"gr_id":2
"name":"Sam",
"country":"US"
},
{
"gr_id":3
"name":"Helen",
"country":"France"
},
.........
{
"gr_id":3
"name":"Dave",
"country":"France"
},
{
"gr_id":4
"name":"Ritesh",
"country":"India"
},
........
{
"gr_id":4
"name":"Robert",
"country":"India"
},
{
"gr_id":5
"name":"Nafeez",
"country":"India"
},
...........
{
"gr_id":5
"name":"Arthur",
"country":"India"
}
],
"links": [
{
"source":"Alex"
"target":"Irene",
"count":1
"country":"Greece"
},
...
{
"source":"Alex"
"target":"Arthur",
"count":0
"country":"India"
},
...
]
}
For count in Links I have an adjacency matrix for each country/name (csv format) like this :screenshot of csv file (ad. matrix for India)
This json is just an example. I have much bigger file (I need it for D3 graph visualization)
Reduce() and map() work perfectly for this. This basically takes each item and then maps over the names, appending the results of map() to an array:
let obj = {}
obj.groups = json.reduce(
(acc, curr) => acc.concat(curr.names.map(
item => ({gr_id: curr.id, country: curr.country, name: item})
)), [])
console.log(obj)
// { groups:
// [ { gr_id: 1, country: 'Greece', name: 'Alex' },
// { gr_id: 1, country: 'Greece', name: 'Betty' },
// ...etc
// ]
// }

extJs - populate grid with array of arrays

I have an array of persons, each person has an array of contacts. The data is in json format:
[
{
"id": 7900,
"position": "Tillitsvalgt",
"person": {
"id": 1000001,
"lastName": "Andrushko",
"contacts": [
{
"id": 1000001,
"personId": 1000001,
"type": {
"id": 5,
"name": "Mobile phone"
},
"value": "25417"
},
{
"id": 1000002,
"personId": 1000001,
"type": {
"id": 35,
"name": "Mobile phone"
},
"value": "945417"
}
]
}
},
{
"id": 7900,
"position": "Tillitsvalgt",
"person": {
"id": 1000001,
"lastName": "Andrushko",
"contacts": [
{
"id": 1000001,
"personId": 1000001,
"type": {
"id": 5,
"name": "Mobile phone"
},
"value": "25417"
},
{
"id": 1000002,
"personId": 1000001,
"type": {
"id": 35,
"name": "Mobile phone"
},
"value": "945417"
}
]
}
}
]
I want to display two grids, first one with persons and the second one with contacts for selected person. I have created two models:
Ext.define('Person', {
extend: 'Ext.data.Model',
fields: [
{
mapping: 'person.lastName',
name: 'lastName'
}
],
hasMany: [
{
associationKey: 'person.contacts',
model: 'Contact',
name: 'contacts'
}
],
proxy: {
type: 'ajax',
url: 'MemberServlet?operation=get',
reader: {
type: 'json'
}
}
});
and a model for contacts:
Ext.define('Contact', {
extend: 'Ext.data.Model',
fields: [
{
mapping: 'type.name',
name: 'type'
},
{
name: 'value'
}
],
belongsTo: {
model: 'Person'
}
});
In such configuration my second grid displays contacts for all persons, I want it to display only for selected person. How can I do it?