I'm using jade templates for my templating system, passing a json file in as the jade locals via my gulpfile.js, but I can't seem to deep dive into the json. I feel like I'm overlooking something basic, but can't find an example online anywhere.
gulpfile.js:
Passes the json file into jade
gulp.task('html', function() {
gulp.src('./markup/*.jade')
.pipe(jade({
pretty: true,
locals: JSON.parse( fs.readFileSync('./markup/data/website_data.json', { encoding: 'utf8' }) )
}).on('error', gutil.log))
.pipe(gulp.dest('../'))
});
Then in my jade, I just pass the locals into a variable for the sake of readability.
- var employees = locals
And I can loop through json that is one level deep:
jade:
for employee in employees
if employee.Tier === 'Founder'
li
button(data-bio="#{employee.LastName.toLowerCase()}")
img(src="/public/img/employees/#{employee.FirstName.toLowerCase()}-#{employee.LastName.toLowerCase()}.jpg", alt="#{employee.FirstName} #{employee.LastName} | #{employee.Title}")
strong #{employee.FirstName} #{employee.LastName}
| #{employee.Title}
json:
[
{
"FirstName":"John",
"LastName":"Doe",
"Title":"Strategist",
"Tier":"Founder",
"Description":"",
"Email":"",
"Links":""
},
...
]
But that has only worked for me if the items I loop through are in the root, as soon as I make the json one level deeper, I can't get it to work based on the key. I want to make the json deeper so I can different sections of a site in it instead of just the employees.
[{
"employees": [
{
"FirstName":"Jason",
"LastName":"Bellinger",
"Title":"Lorem Ipsum",
"Tier":"",
"Description":"",
"Email":"",
"Links":""
},
...
]
}]
I tried a few different approaches to to dig into the json and have failed thus far.
ATTEMPT 1: adjust the variable call and keep the same loop
- var employees = locals.employees
And I get 'Cannot read property 'length' of undefined' in the terminal running $gulp watch
Also try:
- var employees = locals['employees']
to the same result.
ATTEMPT 2: don't use the var and call locals directly in my loop
for employee in locals.employees
AND
for employee in locals["employees"]
And I end up with the same error.
ATTEMPT 3:
keep the var and adjust the loop
- var employees = locals
...
for employee in employees
li #{employee.LastName}
Then I don't get an error in Terminal, but I don't get any content. It produces one empty li.
So then, I try to go a layer deeper in the loop with:
for employee in employees[0]
li #{employee.LastName}
AND
for employee in employees['employees']
li #{employee.LastName}
AND I still get no error and one empty li
I've parsed enough json in my day and jade seems simple enough, I have to be overlooking something basic. Someone please humble me.
I also dabbled in gulp-data, but I'm getting the data into jade with my approach, so I think it's my approach in jade...
You need to access the array inside you locals variable.
The length of local = 1 and that is the entire array of employees.
You'll need to set employees = to the array inside of the locals variable with:
"- var employees = locals[0].employees"
I knew it was something basic. I reverted everything back to the original setup and changed the var and this is working.
- var employees = locals[0]['employees']
Truth be told, I thought I already tried this, but went back and tried again...
Related
I am attempting to print values from an API via JSON response. I was successful when I tried to print the first and foremost "live" value of the response, but I started running into problems when I tried printing anything other than the "live" value. Below is a sample of what I usually receive from the API, and my goal here is to print out only every visible "name" values.
{
"live":[
{
"id":203003098,
"yt_video_key":"K0uWjPoiMRY",
"bb_video_id":"None",
"title":"【Minecraft】Nature, Please Guide Me! ft. #Ceres Fauna Ch. hololive-EN #holoCouncil",
"thumbnail":"None",
"status":"live",
"live_schedule":"2021-09-14T02:00:00.000Z",
"live_start":"2021-09-14T02:00:51.000Z",
"live_end":"None",
"live_viewers":11000,
"channel":{
"id":2260367,
"yt_channel_id":"UC3n5uGu18FoCy23ggWWp8tA",
"bb_space_id":"None",
"name":"Nanashi Mumei Ch. hololive-EN",
"photo":"https://yt3.ggpht.com/MI8E8Wfmc_ngNZXUwu8ad0D-OtqDhmqGVULEu25z-ccscwzJpAw-7ewFXzZYLK2jHB9d5OgQDq4=s800-c-k-c0x00ffffff-no-rj",
"published_at":"2021-07-26T15:45:01.162Z",
"twitter_link":"nanashimumei_en",
"view_count":4045014,
"subscriber_count":281000,
"video_count":14
}
},
{
"id":202920144,
"yt_video_key":"owk8w59Lcus",
"bb_video_id":"None",
"title":"【Undertale】平和なPルートでハッピーエンド目指す!【雪花ラミィ/ホロライブ】",
"thumbnail":"None",
"status":"live",
"live_schedule":"2021-09-14T00:00:00.000Z",
"live_start":"2021-09-14T00:04:22.000Z",
"live_end":"None",
"live_viewers":6200,
"channel":{
"id":31879,
"yt_channel_id":"UCFKOVgVbGmX65RxO3EtH3iw",
"bb_space_id":"None",
"name":"Lamy Ch. 雪花ラミィ",
"description":"ホロライブ所属。\n人里離れた白銀の大地に住む、雪の一族の令嬢。\nホロライブの笑顔や彩りあふれる配信に心を打たれ、\nお供のだいふくと共に家を飛び出した。\n真面目だが世間知らずで抜けたところがある。\n\n\n\nお問い合わせ\nカバー株式会社:http://cover-corp.com/ \n公式Twitter:https://twitter.com/hololivetv",
"photo":"https://yt3.ggpht.com/ytc/AKedOLQDR06gp26jxNNXh88Hhv1o-pNrnlKrYruqUIOx=s800-c-k-c0x00ffffff-no-rj",
"published_at":"2020-04-13T03:51:15.590Z",
"twitter_link":"yukihanalamy",
"view_count":66576847,
"subscriber_count":813000,
"video_count":430
}
},
{
"id":203019193,
"yt_video_key":"QM2DjVNl1gY",
"bb_video_id":"None",
"title":"【MINECRAFT】 Adventuring with Mumei! #holoCouncil",
"thumbnail":"None",
"status":"live",
"live_schedule":"2021-09-14T02:00:00.000Z",
"live_start":"2021-09-14T02:00:58.000Z",
"live_end":"None",
"live_viewers":8600,
"channel":{
"id":2260365,
"yt_channel_id":"UCO_aKKYxn4tvrqPjcTzZ6EQ",
"bb_space_id":"None",
"name":"Ceres Fauna Ch. hololive-EN",
"description":"A member of the Council and the Keeper of \"Nature,\" the second concept created by the Gods.\nShe has materialized in the mortal realm as a druid in a bid to save nature.\nShe has Kirin blood flowing in her veins, and horns that are made out of the branches of a certain tree; they are NOT deer antlers.\n\n\"Nature\" refers to all organic matter on the planet except mankind.\nIt is long said that her whispers, as an avatar of Mother Nature, have healing properties. Whether or not that is true is something only those who have heard them can say.\nWhile she is usually affable, warm, and slightly mischievous, any who anger her will bear the full brunt of Nature\\'s fury.\n\n",
"photo":"https://yt3.ggpht.com/0lkccaVapSr1Z3uuXWbnaQxeqRWr9Tcs4R9rLBRSrAsN9gLacpiT2OFWfFKr4NhF97_hqK3eTg=s800-c-k-c0x00ffffff-no-rj",
"published_at":"2021-07-26T15:38:58.797Z",
"twitter_link":"ceresfauna",
"view_count":5003954,
"subscriber_count":253000,
"video_count":17
}
}
],
My code:
url = "https://api.holotools.app/v1/live"
response = urlopen(url)
data_json = json.loads(response.read())
print(data_json['live'])
I think you're new to programming language so following is the special note for the new programmer.
You did well in printing the data but this is not end because your
goal is to get the name so you need to traverse in the response
one by one let me show you
url = "https://api.holotools.app/v1/live"
response = urlopen(url)
data_json = json.loads(response.read())
dicts = data_json['live']
#Why I'm using loop here? Because we need to get every element of list(data_json['live'] is a list)
for dict in dicts:
print(dict["channel"]["name"]
***Now here after getting single element from list as a dict I select its key which is "channel"***
Following are some useful links through which you can learn how to traverse in json
https://www.kite.com/python/answers/how-to-iterate-through-a-json-string-in-python
https://www.delftstack.com/howto/python/iterate-through-json-python/
There are also stackoverflow answer which are about: How to get data from json? but it need some programming skills too following is the link of answers.
Iterating through a JSON object
Looping through a JSON array in Python
How can I loop over entries in JSON?
I am new to both JSON and Postman(as of yesterday).
I'm trying to do something very simple, I've created a GET request which pulls in a list of forms in a JSON response. I want to take this response and get the first "id" token and place it in a variable.
I am using a global variable but would like to use a collection variable if possible. Either way here is what I am doing.
I've tried several things, most recently this:
var jsonData = JSON.parse(responseBody);
postman.setGlobalVariable("id", jsonData.args.id);
As well as this:
pm.test("GetId", function () {
var jsonData = pm.response.json();
pm.globals.set("id", jsonData.id);
});
Response code looks like this:
{
"forms":[
{
"id":"3197239",
"created":"2018-09-18 11:37:39",
"db":"1",
"deleted":"0",
"folder":"151801",
"language":"en",
"name":"Contact Us",
"num_columns":"2",
"submissions":"0",
"submissions_unread":"0",
"updated":"2018-09-18 12:02:13",
"viewkey":"xxxxxx",
"views":"1",
"submissions_today":0,
"url":"https://xxx",
"data_url":"",
"summary_url":"",
"rss_url":"",
"encrypted":false,
"thumbnail_url":null,
"submit_button_title":"Submit Form",
"inactive":false,
"timezone":"US/Eastern",
"permissions":150
},
{
"id":"3197245",
"created":"2018-09-18 11:42:02",
"db":"1",
"deleted":"0",
"folder":"151801",
"language":"en",
"name":"Football Draft",
"num_columns":"1",
"submissions":"0",
"submissions_unread":"0",
"updated":"2018-09-18 12:11:54",
"viewkey":"xxxxxx",
"views":"1",
"submissions_today":0,
"url":"https://xxxxxxxxx",
"data_url":"",
"summary_url":"",
"rss_url":"",
"encrypted":false,
"thumbnail_url":null,
"submit_button_title":"Submit Form",
"inactive":false,
"timezone":"US/Eastern",
"permissions":150
}
]
}
This would get the first id:
pm.globals.set('firstId', _.first(pm.response.json().forms).id)
That would get the first in the array each time so it would set a different variable it that response changed.
The test that you created was nearly there but the reference needed to go down a level into the forms array:
pm.test("GetId", function () {
var jsonData = pm.response.json()
pm.expect(jsonData.forms[0].id).to.equal("3197239")
pm.globals.set("id", jsonData.forms[0].id)
})
The [0]is referencing the first id in the first object within the array. For example [1] would get the second one and so on.
You currently cannot set a collection level variable using the pm.* API - These can only be added manually and referenced using the pm.variables.get('var_name') syntax.
Edit:
In the new versions of the desktop app you can set variables at the Collection level using pm.collectionVariables.set().
Based on the name or any other attribute if you want to set the id as a global variable then this is the way.
for(var i=0; i<jsonData.forms.length; i++)
{
if (jsonData.forms[i].name==="Contact Us")
{
pm.environment.set("id", jsonData.forms[i].id);
}
}
I am trying to show the "sgv" value on a Dashing / Smashing dashboard widget. Ultimately I would also like to show the "direction" value as well. I am running into problems pulling that precise value down which changes every 3 to 5 minutes. I have already been able to mirror the exact string using the following:
require 'net/http'
require 'rest-client'
require 'json'
url = "https://dnarnianbg.herokuapp.com/api/v1/entries/current.json"
response = RestClient.get(url)
JSON.parse(response)
# :first_in sets how long it takes before the job is first run. In this case, it is run immediately
current_nightscout = 0
SCHEDULER.every '5m' do
last_nightscout = current_nightscout
current_nightscout = response
send_event('nightscout', { current: current_nightscout, last: last_nightscout })
end
I have also searched the archives several times. I don't wish to write this to a file like this one shows and the duplicate question has been deleted or moved.
I realize that the JSON.parse(response) is just going to parse out whatever I tell it the response equals, but I don't know how to get that response to equal SGV. Maybe the solution isn't in the RestClient, but that is where I am lost.
Here is the JSON URL: http://dnarnianbg.herokuapp.com/api/v1/entries/current.json
EDIT: The output of that link is something like this:
[{"_id":"5ba295ddb8a1ee0aede71822","sgv":87,"date":1537381813000,"dateString":"2018-09-19T18:30:13.000Z","trend":4,"direction":"Flat","device":"share2","type":"sgv"}]
You need something like response[0]["sgv"] which should return 52 if you end up with many items in the list you will need to iterate over them.
The best thing you can do is to break your problem down into easier parts to debug. As you are having problems accessing some JSON via an API you should make a simple script which only does the function you want in order to test it and see where the problem is.
Here is a short example you can put into a .rb file and run;
#!/usr/bin/ruby
require 'open-uri'
require 'json'
test = JSON.parse(open("https://dnarnianbg.herokuapp.com/api/v1/entries/current.json", :read_timeout => 4).read)
puts test[0]["sgv"]
That should return the value from sgv
I realise that short sweet example may be little use as a learner so here is a more verbose version with some comments;
#!/usr/bin/ruby
require 'open-uri'
require 'json'
# Open the URL and read the result. Time out if this takes longer then 4 sec.
get_data = open("https://dnarnianbg.herokuapp.com/api/v1/entries/current.json", :read_timeout => 4).read
# Parse the response (get_data) to JSON and put in variable output
output = JSON.parse(get_data)
# Put the output to get the 'sgv figure'
p output[0]["sgv"]
It always pays to manually examine the data you get back, in your case the data looks like this (when make pretty)
[
{
"_id": "5ba41a0fb8a1ee0aedf6eb2c",
"sgv": 144,
"date": 1537481109000,
"dateString": "2018-09-20T22:05:09.000Z",
"trend": 4,
"direction": "Flat",
"device": "share2",
"type": "sgv"
}
]
What you actually have is an Array. Your server returns only 1 result, numbered '0' hence you need [0] in your p statement. Once you have accessed the array id then you can simply use the object you need as [sgv]
If your app ever returns more than one record then you will need to change your code to read all of the results and iterate over them in order to get all the values you need.
Here is the final code that made it work
require 'net/http'
require 'json'
require 'rest-client'
# :first_in sets how long it takes before the job is first run. In this case, it is run immediately
current_nightscout = 0
SCHEDULER.every '1m' do
test = JSON.parse(open("https://dnarnianbg.herokuapp.com/api/v1/entries/current.json", :read_timeout => 4).read)
last_nightscout = current_nightscout
current_nightscout = p test[0]["sgv"]
send_event('nightscout', { current: current_nightscout, last: last_nightscout })
end
I can probably eliminate require 'rest-client' since that is no longer being used, but it works right now and that is all that matters.
I am building a CSV file parser through node and Angular . so basically a user upload a csv file , on my server side which is node the csv file is traversed and parsed using node-csv
. This works fine and it returns me an array of object based on csv file given as input , Now on angular end I need to display two table one is csv file data itself and another is cross tabulation analysis. I am facing problem while rendering data, so for a table like
I am getting parse responce as
For cross tabulation we need data in a tabular form as
I have a object array which I need to manipulate in best possible way so as to make easily render on html page . I am not getting a way how to do calculation on data I get so as to store cross tabulation result .Any idea on how should I approach .
data json is :
[{"Sample #":"1","Gender":"Female","Handedness;":"Right-handed;"},{"Sample #":"2","Gender":"Male","Handedness;":"Left-handed;"},{"Sample #":"3","Gender":"Female","Handedness;":"Right-handed;"},{"Sample #":"4","Gender":"Male","Handedness;":"Right-handed;"},{"Sample #":"5","Gender":"Male","Handedness;":"Left-handed;"},{"Sample #":"6","Gender":"Male","Handedness;":"Right-handed;"},{"Sample #":"7","Gender":"Female","Handedness;":"Right-handed;"},{"Sample #":"8","Gender":"Female","Handedness;":"Left-handed;"},{"Sample #":"9","Gender":"Male","Handedness;":"Right-handed;"},{"Sample #":";"}
There are many ways you can do this and since you have not been very specific on the usage, I will go with the simplest one.
Assuming you have an object structure such as this:
[
{gender: 'female', handdness: 'lefthanded', id: 1},
{gender: 'male', handdness: 'lefthanded', id: 2},
{gender: 'female', handdness: 'righthanded', id: 3},
{gender: 'female', handdness: 'lefthanded', id: 4},
{gender: 'female', handdness: 'righthanded', id: 5}
]
and in your controller you have exposed this with something like:
$scope.members = [the above array of objects];
and you want to display the total of female members of this object, you could filter this in your html
{{(members | filter:{gender:'female'}).length}}
Now, if you are going to make this a table it will obviously make some ugly and unreadable html so especially if you are going to repeat using this, it would be a good case for making a directive and repeat it anywhere, with the prerequisite of providing a scope object named tabData (or whatever you wish) in your parent scope
.directive('tabbed', function () {
return {
restrict: 'E',
template: '<table><tr><td>{{(tabData | filter:{gender:"female"}).length}}</td></tr><td>{{(tabData | filter:{handedness:"lefthanded"}).length}}</td></table>'
}
});
You would use this in your html like so:
<tabbed></tabbed>
And there are ofcourse many ways to improve this as you wish.
This is more of a general data structure/JS question than Angular related.
Functional helpers from Lo-dash come in very handy here:
_(data) // Create a chainable object from the data to execute functions with
.groupBy('Gender') // Group the data by its `Gender` attribute
// map these groups, using `mapValues` so the named `Gender` keys persist
.mapValues(function(gender) {
// Create named count objects for all handednesses
var counts = _.countBy(gender, 'Handedness');
// Calculate the total of all handednesses by summing
// all the values of this named object
counts.Total = _(counts)
.values()
.reduce(function(sum, num) { return sum + num });
// Return this named count object -- this is what each gender will map to
return counts;
}).value(); // get the value of the chain
No need to worry about for-loops or anything of the sort, and this code also works without any changes for more than two genders (even for more than two handednesses - think of the aliens and the ambidextrous). If you aren't sure exactly what's happening, it should be easy enough to pick apart the single steps and their result values of this code example.
Calculating the total row for all genders will work in a similar manner.
Let's say I have a JSON array of data, something like:
[ {"name":"parijat","age":28},
{"name":"paul","age":28},
{"name":"steven","age"27},
...
]
that is part of my model, and this model is setup like this:
App.UserRoute = Ember.Route.extend({
model:function(){
return App.User.FIXTURES ; // defined above
}
});
I want to get the unique ages from this JSON array and display them in my template, so I reference the computed properties article and read up a little on how to enumerate Ember Enumerables, to eventually get this:
App.UserController = Ember.ArrayController.extend({
ages:function(){
var data = this.get('content');
var ages = data.filter(function(item){
return item.age;
});
}.property('content');
});
Now the above piece of code for controller is not correct but the problem is that it doesn't even go into data.filter() method if I add a console.log statements inside. IMO, it should typically be console logging as many times as there exist a App.Users.FIXTURE. I tried using property('content.#each') which did not work either. Nor did changing this.get('content') to this.get('content.#each') or this.get('content.#each').toArray() {spat an error}.
Not sure what to do here or what I am completely missing.
Filter is used for reducing the number of items, not for mapping.
You can use data.mapBy('age') to get an array of your ages:
ages:function(){
return this.get('content').mapBy('age');
}.property('content.#each')
or in your handlebars function you can just use the each helper:
{{#each item in controller}}
{{item.age}}
{{/each}}