{
"code": 2001,
"message": "todays usage",
"results": [
{
"date": "2015-03-20",
"download": 7.063141,
"mac": "18f46ab79f0d",
"upload": 16.086909
}
],
"status": 200
}
how to get value of download from this json object ?i want to get the value of download and upload.
Example: if the above json was assigned to a variable called jsonObject:
var downloadValue = jsonObject.results[0].download;
var uploadValue = jsonObject.results[0].upload;
Related
I have an array in request as:
{
"acceptedBookings": [
{
"id": "e1f66d7a852986709f665c3",
"Date": "2020-02-04T05:03:25.332Z"
}
]
}
I want to update the "date" for every "id". However If I search as
await Booking.findById( acceptedBookings[0].id ) or
await Booking.findOne({_id : acceptedBookings[0].id})
It does not give a response
You're accessing wrong member, what you want is:
let's assume your map is something like
const acceptedBookings = {
"accepted": [{
"id": "e1f66d7a852986709f665c3",
"Date": "2020-02-04T05:03:25.332Z"
},
{
"id": "i123",
"Date": "2020-02-04T05:03:25.332Z"
},
{
"id": "i123",
"Date": "2020-02-04T05:03:25.332Z"
}
]
};
console.log(acceptedBookings.accepted[0].id); // e1f66d7a852986709f665c3
console.log(acceptedBookings.accepted[1].id); // i123
await Booking.findById( acceptedBookings.accepted[0].id ) //should work fine
Remember the object you've created that is not an array it's map/object with a key: value pair
thus get the right array/element first then access it's members
I'm building 'Comments Detail page' which is a list view for comments in a single post (basically it's just facebook comments page).
I generated this JSON response data below, and as you can see, there are duplicate image urls. It means that if same user comments 100 times on a post, it needs to get image data from AWS 100 times rather than 1 time.
Maybe it's over-engineering? How do you guys deal with this?
Here is JSON data
{
"comments": [{
"id": 4,
"user": {
"image": "https://xxx.s3.amazonaws.com:443/-",
"id": 1,
"username": "jbaek73"
},
"content": "Edited!",
"publish": "2017-09-18T12:11:41.002838Z",
"updated": "2017-09-19T08:16:25.408756Z",
"reply_count": 1
},
{
"id": 13,
"user": {
"image": "https://xxx.s3.amazonaws.com:443/-",
"id": 1,
"username": "jbaek73"
},
"content": "Neaa!",
"publish": "2017-09-18T14:12:51.876523Z",
"updated": "2017-09-18T14:12:51.876600Z",
"reply_count": 0
},
{
"id": 14,
"user": {
"image": "https://xxx.s3.amazonaws.com:443/random",
"id": 5,
"username": "koreana"
},
"content": "Newa!",
"publish": "2017-09-19T08:16:35.190351Z",
"updated": "2017-09-19T08:16:35.190398Z",
"reply_count": 0
},
In this case, i would create an image object with all the required images and the user id as key:
randomFuntionName() { //you can call after you get your json
var img = []
comments.forEach((element) => { //comments are comming from your json btw
if (img[element.user.id] == null) {
img[element.user.id] = require(element.user.image)
}
})
this.setState({img})
}
render() {
//this part is only for example, you need to dynamicaly change userID
return (<Image source={this.state.img[userId]}/>)
}
This should do the work, but didn't tested it in app.
Hi Im new to JSON this may be a basic question, im having data as a JSON object and i want to print the "message" data alone. My sample JSON data, in this how can i access message?
{
"name": "Usingtagproject",
"fan_count": 0,
"category": "Product/Service",
"feed": {
"data": [
{
"created_time": "2017-05-02T18:24:27+0000",
"message": "hii",
},
{
"created_time": "2017-05-02T09:26:37+0000",
"message": "Hi Google",
},
{
"created_time": "2017-05-02T09:24:26+0000",
"message": "Hi Demoproject",
}
],
}
JSON is essentially a map (keys with values), that has a specific syntax.
It completely depends on what language you're accessing it in, but you can assume that most languages will have key indexing, so that you can say:
string name = my_json['name']
list<map> data = my_json['data']
for data_map in data:
print "found message: " + data_map['message']
I am trying to update a field in a document with an array. I want to add an array to the field "products". I tried this:
POST /index/type/1/_update
{
"doc" :{
"products": [
{
"name": "A",
"count": 1
},
{
"name": "B",
"count": 2
},
{
"name": "c",
"count": 3
}
]
}
}
this is the error response I am getting when I try and run the code:
{
"error": {
"root_cause": [
{
"type": "mapper_parsing_exception",
"reason": "failed to parse [products]"
}
],
"type": "mapper_parsing_exception",
"reason": "failed to parse [products]",
"caused_by": {
"type": "illegal_state_exception",
"reason": "Can't get text on a START_OBJECT at 1:2073"
}
},
"status": 400
}
Anyone know what I am doing wrong?
The message "Can't get text on a START_OBJECT" means that Elasticsearch was expecting an entry of type "string" but you are trying to give an object as input.
If you check Kibana you will find that the field "products" exists there and is defined as a string. But since you are entering a list of dictionaries then the field "products" should have been defined from the beginning as an object (preferably with dynamic fields in it). An example would be (see full example at https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic.html )
"products": {
"dynamic": true,
"properties": {}
}
However since you already have the index then you can't change the mapping so you would need to delete the index, do the mapping beforehand and then do the update.
I'm new in Node.JS and I'm able to parse the JSON data and do a console log to print out name and badges.
var details = JSON.parse(body);
console.log(details.name, details.badges.length);
But I don't know how I can get the data inside the arrays of the bagdes such as id, name, url.
I tried
console.log(details.badges.length.id);
But nothing shows up. How can I access that? Thank you.
{
"name": "Andrew Chalkley",
"badges": [
{
"id": 49,
"name": "Newbie",
"url": "http:\/\/teamtreehouse.com\/chalkers",
"icon_url": "https:\/\/achievement-images.teamtreehouse.com\/Generic_Newbie.png",
"earned_date": "2012-07-23T19:59:34.000Z",
"courses": [
]
},
{
"id": 26,
"name": "Introduction",
"url": "http:\/\/teamtreehouse.com\/library\/html\/introduction",
"icon_url": "https:\/\/achievement-images.teamtreehouse.com\/HTML_Basics.png",
"earned_date": "2012-07-23T21:57:24.000Z",
"courses": [
{
"title": "HTML",
"url": "http:\/\/teamtreehouse.com\/library\/html",
"badge_count": 1
},
{
"title": "Introduction",
"url": "http:\/\/teamtreehouse.com\/library\/html\/introduction",
"badge_count": 1
}
]
}
}
It is an array, so you need the index, for example: details.badges[0].id
This will return the first (index 0) element id.
.length only returns the length of the array, so it will not be useful to get the data in it.