I have tried to many ways , but i am stuck with a simple function in javascript, and i don't know where i need to looking for ... the problem is this:
I have a Json file like this one:
{
"blacklist": [
{
"email": "strangemail#gmail.com"
},
{
"email": "strangemail1#gmail.com"
},
{
"email": "strangemail2#gmail.com"
},
{
"email": "fianlt#gmail.com"
},
{
"email": "finalstatustest#gmail.com"
}
]
}
I would like simple remove an email with a simple function like this one:
function cancel(email) // parameter that contain the value to delete
{
let rawdata = fs.readFileSync('pvt.json'); //get local json file
let mydata = JSON.parse(rawdata); //parsing rawdata
var key = email; //setting up key
delete mydata.blacklist[key]; //using delete function for delete an element
let data = JSON.stringify(mydata, null, 2); //stringify the result
fs.writeFileSync('pvt.json', data); // overwrite local file with new one with all changes
}
the problem is ... it doesn't works ... i don't know why ... i tried to read the documentation, but i didn't found any solution 😢
The delete operator is for removing a property from an object, using the property's name. You're trying to remove an entry from an array, using the value of a property of an object in the array.
Assuming email is a variable containing the email address in the entry you want to remove, filter is one easy way to do that:
mydata.blacklist = mydata.blacklist.filter(entry => entry.email !== email);
filter builds a new array from the entries in the original array that meet the criteria in the callback — in this case, that their email property doesn't match the email address you want to remove.
If you wanted to modify the array in place rather than creating a new one, you'd use findIndex and splice:
const index = mydata.blacklist.findIndex(entry => entry.email === email);
if (index !== -1) {
mydata.blacklist.splice(index, 1); // Remove the entry at the index
}
Delete works to delete a key-value from an object. Here you have an array of items[objects]. You should use filter to remove unwanted element.
Update:
function cancel(selectedEmail) {
let rawdata = fs.readFileSync("pvt.json"); //get local json file
let mydata = JSON.parse(rawdata); //parsing rawdata
mydata.blacklist = mydata.blacklist.filter(
(item) => item.email !== selectedEmail.email
);
fs.writeFileSync("pvt.json", JSON.stringify(mydata, null, 2)); // overwrite local file with new one with all changes
}
Sample:
const info = {
blacklist: [
{
email: "strangemail#gmail.com",
},
{
email: "strangemail1#gmail.com",
},
{
email: "strangemail2#gmail.com",
},
{
email: "fianlt#gmail.com",
},
{
email: "finalstatustest#gmail.com",
},
],
};
const selectedEmail = {email: "finalstatustest#gmail.com"}
info.blacklist = info.blacklist.filter(item => item.email !== selectedEmail.email)
console.log(info)
Related
So, I made a command which registers pokémon you are shiny hunting for, how many you have got, and how many eggs it took/is taking for you to get the shiny, and it works fine. My problem is that some people forget the pokémon they did register in that storage, and so I would like to be able to send a message containing all the pokémon they registered in the Storage, like this:
You have registered the following pokémon:
(All the pokémon you registered)
But, I don't know how to loop through the keys that are inside of the user's ID. Here's how my json file looks:
{
"User's ID": {
"Pokémon": {
"encounters": value,
"shinies": value
},
"Pokémon": {
"encounters": value,
"shinies": value
}
}
}
I have tried looping like this:
const path = require('path');
const fs = require('fs');
const shiniesDataPath = path.resolve(__dirname, './Storage/shiniesData.json');
function loadShiniesData() {
return JSON.parse(fs.readFileSync(shiniesDataPath).toString());
}
const shiniesData = loadShiniesData();
var trainer = shiniesData[message.author.id];
if (args[0] === 'all') {
for (var trainer in shiniesData) {
message.channel.send([trainer])
}
return;
}
But it only loops through the ID's.
i think the example code that you have provided is not entirely clear.
like what do you have var trainer in two places.
var trainer = shiniesData[message.author.id];
if (args[0] === 'all') {
for (var trainer in shiniesData) {
message.channel.send([trainer])
}
return;
}
I am guessing this what you are looking for
if (args[0] === 'all') {
Object.keys(shiniesData).forEach(userId => {
const monsterNames = Object.keys(shiniesData[userId]);
message.channel.send(userId, monsterNames]);
});
return;
}
A JSON object should not have multiple identical keys, rather what you can do is assign the Pokémon key to an array, like this:
{
"User's ID": {
"Pokémon": [
{
"encounters": value,
"shinies": value
},
{
"encounters": value,
"shinies": value
}
]
}
}
In order to access the keys, let's say the object above was assigned to variable obj. In order to access the keys in an object, you can do
Object.keys(obj).forEach((key) => {
// Do something
})
However if you switch to an array as I have done, I'd imagine you would want to do something like this instead:
obj['Pokémon'].forEach((item) => {
// Do something
})
where obj['Pokémon'] returns the array mapped to the key 'Pokémon', and .foreach iterates through each item in the array, and you can access it within the anonymous function (surrounded by curly braces) via the variable item.
const message = {
author: {
id: "1234"
},
channel: {
send: console.log
}
}
// stubbed function
function loadShiniesData() {
return {
"1234": {
"Pikachu": {
"encounters": 2,
"shinies": 3
},
"Fenekin": {
"encounters": 5,
"shinies": 1
}
}
}
}
const shiniesData = loadShiniesData();
const trainer = shiniesData[message.author.id];
message.channel.send('You have registered the following pokemon:\n' + Object.keys(trainer).join(", "));
Once you've retrieved the users data then you can use Object.keys to get an array of the pokemon names.
So I am pretty new when it comes to Javascript and it is as simple as read a json list with a value of:
{
"URL": [{
"https://testing.com/en/p/-12332423/": "999"
}, {
"https://testing.com/en/p/-123456/": "123"
},
{
"https://testing.com/en/p/-456436346/": "422"
}
]
}
What I would like to do is to have both the URL and the amount of numbers etc
"https://testing.com/en/p/-12332423/" and "999"
and I would like to for loop so it runs each "site" one by one so the first loop should be
"https://testing.com/en/p/-12332423/" and "999"
second loop should be:
"https://testing.com/en/p/-123456/" and "123"
and so on depending on whats inside the json basically.
So my question is how am I able to loop it so I can use those values for each loop?
As Adam Orlov pointed out in the coment, Object.entries() can be very useful here.
const URLobj = {
"URL": [{
"https://testing.com/en/p/-12332423/": "999"
}, {
"https://testing.com/en/p/-123456/": "123"
},
{
"https://testing.com/en/p/-456436346/": "422"
}
]
};
URLobj.URL.forEach(ob => {
console.log('ob', ob);
const entries = Object.entries(ob)[0]; // 0 just means the first key-value pair, but because each object has only one we can just use the first one
const url = entries[0];
const number = entries[1];
console.log('url', url);
console.log('number', number);
})
You mean something like this using Object.entries
const data = {
"URL": [
{"https://testing.com/en/p/-12332423/": "999"},
{"https://testing.com/en/p/-123456/": "123"},
{"https://testing.com/en/p/-456436346/": "422"}
]
}
data.URL.forEach(obj => { // loop
const [url, num] = Object.entries(obj)[0]; // grab the key and value from each entry - note the [0]
console.log("Url",url,"Number", num); // do something with them
})
let's call your object o1 for simplicity. So you can really go to town with this link - https://zellwk.com/blog/looping-through-js-objects/
or you can just use this code :
for(var i = 0; i < o1.URL.length; i++) {
//each entry
var site = Object.keys(URL[i]) [0];
var value = Object.values(URL[i]) [0];
// ... do whatever
}
don't forget each member of the array is an object (key : value) in its own right
You can extract the keys and their values into another object array using map
Then use the for loop on the newly created array. You can use this method on any object to separate their keys and values into another object array.
const data = {
"URL": [{
"https://testing.com/en/p/-12332423/": "999"
}, {
"https://testing.com/en/p/-123456/": "123"
},
{
"https://testing.com/en/p/-456436346/": "422"
}
]
}
var extracted = data.URL.map(e => ({
url: Object.keys(e)[0],
number: Object.values(e)[0]
}))
extracted.forEach((e) => console.log(e))
I have an API that I am calling to return a query. This query's format cannot be changed to be easier to manipulate. It has a nested array within it that I need to associate with the data from the higher levels.
Specifically, I am trying to pull the higher level id field and and the "value" field within "column_values" and associate them with one another preferably within a new array. I feel like the answer is here but I just can't grasp how to pull the data in the correct format and associate it together. Most of the comment lines can probably be ignored, they are my other attempts at making the syntax work correctly. Sorry about the mess. I'm really new to this.
const axios = require('axios')
const body = {
query: ` query {boards(ids:307027197) {name, items {name id column_values(ids:lockbox_) {title id value text}}}} `,
}
console.log("Requesting Query....");
function getApi (callback){
setTimeout(function() {axios.post(`https://api.monday.com/v2`, body, {
headers: {
MY_API_KEY_DATA
},
})
.catch(err => {
console.error(err.data)
})
.then(res => {
var queried = res
var array = queried.data.data.boards[0].items
//console.log(queried)
//console.log(array)
console.log(array.length)
//console.log("Total Items:", array.length)
var i;
for (i = 0; i < array.length; i++){
callback(queried.data.data.boards[0].items)
//callback([(queried.data.data.boards[0].items[i].column_values[0])])
}
}, 0);
})
};
getApi(callback => {
console.log(callback)
//console.log(parsed)
//output for above
//{"name":"address","id":"1234","column_values":
//[{"title":"Lockbox#","id":"lockbox_","value":"\"31368720\"","text":"31368720"}]}
//console.log(JSON.parse(parsed))
//output for above
//[
// {
// name: 'address',
// id: '353428429',
// column_values: [ [Object] ]
// }
//]
});
setTimeout(function() {
console.log("Query Returned")},1000);
From your data, column_values is an array with objects in it. For an array, you will have to access it with the key. For your case, if your data is like
var data = {
"name":"address",
"id":"1234",
"column_values": [{"title":"Lockbox#","id":"lockbox_","value":"\"31368720\"","text":"31368720"}]
}
You can access the id of column_values as data.column_values[0].id
I am currently using array filters to update the nested object.
My structure is -
Category Collection -
{
name:Disease,
_id:ObjectId,
subCategory:[{
name:Hair Problems,
_id:ObjectId,
subSubCategory:[{
name: Hair Fall,
_id:ObjectId
},{
name: Dandruff,
_id:ObjectId
}]
}]
}
I want to update the subsubcategory with id 1.1.1 which I am doing by using array filters.
let query = { 'subCategories.subSubCategories._id': subSubId };
let update = { $set: { 'subCategories.$.subSubCategories.$[j]': data } };
let option = { arrayFilters: [{ 'j._id': subSubId }], new: true };
await Categories.findOneAndUpdate(query, update, option
This code is working fine but array filters change the object id of subsubCategory. Is there any other alternative to do so without changing the ObjectId.
Thanks in advance
You can loop over the keys which you are getting as payload and put inside the $set operator.
const data = {
firstKey: "key",
secondKey: "key2",
thirdKey: "key3"
}
const object = {}
for (var key in data) {
object[`subCategories.$.subSubCategories.$[j].${key}`] = data[key]
}
let query = { 'subCategories.subSubCategories._id': subSubId };
let update = { '$set': object };
let option = { 'arrayFilters': [{ 'j._id': subSubId }], 'new': true };
await Categories.findOneAndUpdate(query, update, option)
Problem is in $set line there you have not mentioned specific fields to be update instead subCategory.$.subSubCategory.$[j] will replace complete object element that matches the _id filter. Hence your _id field is also getting updated. You have to explicitly mention the field name after array element identifier. See example below:
Suppose you want to update name field in subSubCategories from Dandruff to new Dandruff. Then do this way:
let update = { $set: { 'subCategories.$.subSubCategories.$[j].name': "new Dandruff" } };
This will only update name field in subSubCategories array
I have a doc in my collection in this format
name: xyz,
email: xyz#email.com,
age: 30,
address: {
street_no: {
complete_address: somedata,
pincode: somepin
},
city:somecity,
state:somestate,
landmark:nearby
}
And inside this doc I am trying to insert and merge the complete_address with the previous record. To achieve that I am trying this
const database = firebase.firestore();
var dataRef = database.collection('collection');
var query = dataRef.doc(key+"").get().then(doc=>{
if(!doc.exists){
res.send("doesn't exist");
}else{
//few checks
if(doc.data().accessid != accessid){
res.send("accessid doesn't match")
}
//here I am trying to insert and merge with the previous data
var form_path = 'address.street_no.complete_address';
dataRef.doc(key+"."+form_path).set({
another_address
}, {merge: true});
}
}).catch(err=>{
console.log(err)
})
But when I execute this it just add another document in a collection followed by this path key.address.street_no.complete_address.
What can I do to only insert and merge with the previous complete_address ?
There is . instead of / in form_path because got few ideas from this link
I believe your issue lies within the next couple of lines starting at
var form_path = 'address.street_no.complete_address';
Next, You're using dataRef.doc(key+"."+form_path)
which means the only document being set is
/addressCollection/key.{addressCollectionId}
and addressCollectionId being address.street_no.complete_address
Instead what you want to do is access the property within the document using dot notation like so.
address: {
street_no: {
complete_address
Example.
someDocument.update({
"address.street_no.complete_address": "some_data"
});
Note that "some_data" will replace what ever data is currently stored. You'll want to do one read and merge the data. For example.
const anotherAddress = { address: "123 Fake Street" };
const document = firebase
.firestore()
.collection("addressCollection")
.doc("someAddressId");
document
.get()
.then(snap => {
const data = snap.data();
const completeAddress = data.address.street_no.complete_address };
// We're using the spread operator here to combine the current completeAddress with anotherAddress
return { completeAddress, ...anotherAddress };
})
.then(newCompleteAddress =>
document.update({
"address.street_no.complete_address": newCompleteAddress
})
);
I got this working.
So I figured out what I was trying to do earlier will create another document in a collection with data respect to it. So I start treated everything as an object and passed an object data to set() method.
const database = firebase.firestore();
var dataRef = database.collection('collection');
var query = dataRef.doc(key+"").get().then(doc=>{
if(!doc.exists){
res.send("doesn't exist");
}else{
//few checks
if(doc.data().accessid != accessid){
res.send("accessid doesn't match")
}
//here I am trying to insert and merge with the previous data
var mergeData = {
address : {
}
}
var new_address = {
key: "address_data"
}
mergeData.address[street_no] = {complete_address : address}
if(dataRef.doc(key+"").set(mergeData, {merge: true})){
res.send("done")
}else{
res.send("failed")
}
}
}).catch(err=>{
console.log(err)
})