Develop Reference

Replace all values in an object with a specific key

My goal here is to convert all type values in the array below to the types in the object that collerate to numbers.
let obj = [
{
type: 'boolean',
name: 'coolName',
description: 'First description',
required: false
},
{
type: 'subcommand',
name: 'destroy',
description: 'Destroy something',
options: [
{
type:"integer",
name:"amount",
description:"How much would you like to destroy?",
required: true
}
]
}
]
const types = {
'subcommand':1,
'subcommandgroup':2,
'string':3,
'integer':4,
'boolean':5,
'user':6,
'channel':7,
'role':8,
'mentionable':9,
'number':10,
'attachment':11
}
I've been looking for a while and cannot find a function that also iterates through the nested object, if anyone has a way to do this please let me know.

obj.map(o => {
o.type = types[o.type]
if(o.options){
o.options.map(opt => {
opt.type = types[opt.type]
})
}
return o;
})

Sort array object based on another array in javascript

How can i sort and rearrange an array that looks like this
fields = [
{
uid: '2c2162cc-37d0-f1e3-96c2-6d9ccb50f38d',
field: new ObjectId("627f816d8443318c6aaa1220"
},
{
uid: '2aa60f96-135b-e179-2b46-516c87a877cc',
field: new ObjectId("6283cb3ca573a56e11587c46"),
}
]
to match the arrangement of this array:
order = [ '6283cb3ca573a56e11587c46', '627f816d8443318c6aaa1220' ]
Here is the output I’m looking for:
[
{
uid: '2aa60f96-135b-e179-2b46-516c87a877cc',
field: new ObjectId("6283cb3ca573a56e11587c46"),
},
{
uid: '2c2162cc-37d0-f1e3-96c2-6d9ccb50f38d',
field: new ObjectId("627f816d8443318c6aaa1220"),
}
]
findIndex and sort but I am very confused
fields.sort((a: any, b: any) => order.indexOf(a.field) - order.indexOf(b.field)) // It does not work

You need to use sort method on the array. And then compare the index of field on the order array.
const data = [
{
uid: '2aa60f96-135b-e179-2b46-516c87a877cc',
field: "6283cb3ca573a56e11587c46",
value: 'test val 6'
},
{
uid: '2c2162cc-37d0-f1e3-96c2-6d9ccb50f38d',
field: "627f816d8443318c6aaa1220",
value: ''
}
]
const order = [ '6283cb3ca573a56e11587c46', '627f816d8443318c6aaa1220' ];
data.sort((a,b) => order.indexOf(a.field) - order.indexOf(b.field));
console.log(data);
Notice: ObjectId class is not defined here, so I changed it to string here for simplicity.

Sequelize include nested column: Unknown column in 'where clause'

I am trying to use the Sequelize ORM's feature that allows referring the nested column from the included Models (See Sequelize Docs: Complex where clauses at the top-level). In the docs it states that, I can use $nested.column$ syntax.
The following is what I was trying to do:
let where = { memberId };
if (req.query.search) {
const like = { [Op.like]: `%${req.query.search}%` };
where = {
...where,
[Op.or]: [
{ '$bookItem.serial$': like },
{ '$bookItem.book.name$': like },
{ '$bookItem.book.ISBNCode$': like },
],
};
}
const options = {
where,
include: [
{
model: models.BookItem,
as: 'bookItem',
required: false,
include: [
{
model: models.Book,
as: 'book',
attributes,
required: false,
},
],
},
],
});
const transactions = await models.Borrow.findAll(options);
However, for the code above, I am getting the following error:
"Unknown column 'bookItem.serial' in 'where clause'"
What am I missing?
Full DB Schema: https://dbdiagram.io/d/5e08b6aaedf08a25543f79cb

Is bookitem a Table? Or a Database?
bookItem.serial either represents db.tbl or tbl.column
bookItem.book.name can only represent db.tbl.column
Since bookItem seems to be a database name, then serial must be a table name. At that point, "tablename LIKE ..." is a syntax error.

In your linked documentation books has no name column, change $bookItem.book.name$ to $bookItem.book.title$, and try adding right: true below required: false to create an inner join.

I have corrected this error on my side. Initially, I am writing this query
but now I have rearranged the query and it works
WRONG QUERY
let where = {
[op.and]: [
{ id: partner_id },
{ [op.or]: [
{ '$customers.customer_name$': { [op.like]: '%' + query + '%'} },
{ '$customers.email$': { [op.like]: '%' + query + '%'} },
]},
],
};
// const where = {
// id: partner_id
// }
return await this.deliveryBoys.findOne({
attributes: [
['id', 'partner_id'],
'delivery_boy_name',
'email',
'profile_picture',
'phone_number',
'fcm_token',
],
include: [
{
model: this.customers,
as: 'customers',
attributes: ['id', 'customer_name', 'email', 'profile_picture', 'phone_number'],
require: true,
where: {
customer_name: {
[op.like]: '%' + query + '%'
}
},
include: [
{
model: this.company,
as: 'company',
},
{
model: this.address,
as: 'address',
required: false,
where: {
status: 1
}
}
]
},
],
where,
});
FINAL WORKING QUERY
let where = {
[op.and]: [
{ '$deliveryBoys.id$': partner_id },
{ [op.or]: [
{ '$customers.email$': { [op.like]: '%' + query + '%'} },
{ '$customers.customer_name$': { [op.like]: '%' + query + '%'} },
{ '$customers.phone_number$': { [op.like]: '%' + query + '%'} },
{ '$company.name$': { [op.like]: '%' + query + '%'} },
]},
],
};
return await this.customers.findAll({
attributes: ['id', 'customer_name', 'email', 'profile_picture', 'phone_number'],
include:[
{
model: this.deliveryBoys,
as: 'deliveryBoys',
attributes: ['id','delivery_boy_name','phone_number','email','profile_picture','status',],
where:{
id: partner_id
}
},
{
model: this.company,
as: 'company',
},
{
model: this.address,
as: 'address',
required: false,
where: {
status: 1
}
}
],
where
});

Javascript - Update object in array by id and move it to the first index

I have this array:
const chats = [
{ id: "chat-1", msg: { text: "World", date: (a date) } },
{ id: "chat-2", msg: { text: "Hello", date: (a date) } },
];
After receiving updates from my database, I receive this object:
// The second chat with update data
{ id: "chat-2", msg: { text: "Bye", date: (a date) } },
How can I (using ES6) replace the chat object from the original chats array and move it to the first index?
For now, I am doing this, but I am looking for a fastest way (smaller O)
// Get the modified chat
const modifiedChat = response.data;
// Search the modified chat in the chats array by id
const chatIndex = chats.findIndex(
(chat) => chat.id === modifiedChat.id
);
// Finally, using spread syntax, add the updated chat to the head of our current chats array
chats = [
modifiedChat,
...chats.slice(0, chatIndex),
...chats.slice(chatIndex + 1),
];

You can do the following,
const chats = [
{ id: "chat-1", msg: { text: "World", date: '' } },
{ id: "chat-2", msg: { text: "Hello", date: '' } },
];
const modifiedChat = { id: "chat-2", msg: { text: "Bye", date: '' } };
const newChats = [modifiedChat, ...chats.filter(item => item.id !== modifiedChat.id)];
console.log(newChats);

You can do something similar to how LRU cache works. You can now access every chat in O(1)

Create a key map for all paths in a recursive/nested object array

I have an n levels deep nested array of tag objects with title and ID. What I'm trying to create is a an object with IDs as keys and values being an array describing the title-path to that ID.
I'm no master at recursion so my attempt below doesn't exactly provide the result I need.
Here's the original nested tag array:
const tags = [
{
title: 'Wood',
id: 'dkgkeixn',
tags: [
{
title: 'Material',
id: 'ewyherer'
},
{
title: 'Construction',
id: 'cchtfyjf'
}
]
},
{
title: 'Steel',
id: 'drftgycs',
tags: [
{
title: 'Surface',
id: 'sfkstewc',
tags: [
{
title: 'Polished',
id: 'vbraurff'
},
{
title: 'Coated',
id: 'sdusfgsf'
}
]
},
{
title: 'Quality',
id: 'zsasyewe'
}
]
}
]
The output I'm trying to get is this:
{
'dkgkeixn': ['Wood'],
'ewyherer': ['Wood', 'Material'],
'cchtfyjf': ['Wood', 'Construction'],
'drftgycs': ['Steel'],
'sfkstewc': ['Steel', 'Surface'],
'vbraurff': ['Steel', 'Surface', 'Polished'],
'sdusfgsf': ['Steel', 'Surface', 'Coated'],
'zsasyewe': ['Steel', 'Quality']
}
So I'm building this recursive function which is almost doing it's job, but I keep getting the wrong paths in my flat/key map:
function flatMap(tag, acc, pathBefore) {
if (!acc[tag.id]) acc[tag.id] = [...pathBefore];
acc[tag.id].push(tag.title);
if (tag.tags) {
pathBefore.push(tag.title)
tag.tags.forEach(el => flatMap(el, acc, pathBefore))
}
return acc
}
const keyMap = flatMap({ title: 'Root', id: 'root', tags}, {}, []);
console.log("keyMap", keyMap)
I'm trying to get the path until a tag with no tags and then set that path as value for the ID and then push the items 'own' title. But somehow the paths get messed up.

Check this, makePaths arguments are tags, result object and prefixed titles.
const makePaths = (tags, res = {}, prefix = []) => {
tags.forEach(tag => {
const values = [...prefix, tag.title];
Object.assign(res, { [tag.id]: values });
if (tag.tags) {
makePaths(tag.tags, res, values);
}
});
return res;
};
const tags = [
{
title: "Wood",
id: "dkgkeixn",
tags: [
{
title: "Material",
id: "ewyherer"
},
{
title: "Construction",
id: "cchtfyjf"
}
]
},
{
title: "Steel",
id: "drftgycs",
tags: [
{
title: "Surface",
id: "sfkstewc",
tags: [
{
title: "Polished",
id: "vbraurff"
},
{
title: "Coated",
id: "sdusfgsf"
}
]
},
{
title: "Quality",
id: "zsasyewe"
}
]
}
];
console.log(makePaths(tags));