I'm trying to loop through JSON data that I'm pulling from a file. I'm using the require function to get the JSON file but it keeps telling me there is an unexpected '{' token? positions on IDE and console are a little off but I'm pretty sure it's the second objects opening { -position 44-
Any suggestions?
myData.json
{
"colour" : "blue",
"cm" : 2
}
{
"colour" : "red",
"cm" : 5
}
index.js
const fileContents = require("./myData.json");
Because the JSON is invalid. Your JSON file needs to define one entity, where currently you're defining two. Even if the code could read the data, there's no logical way to indicate which of those two objects you want to refer to.
It looks like you meant to put them in an array:
[
{
"colour" : "blue",
"cm" : 2
},
{
"colour" : "red",
"cm" : 5
}
]
Then you can import the whole array, and refer to elements of the array for each object.
Related
I'm currently using node-ews in a project to access an Exchange Web Server via node.js. Now i ran into a weird problem. To run for example a "CreateItem" request, which can be an E-Mail or Appointment for example, I'm giving the function the arguments as a json similar to this
var args = {
"attributes" : {
"SendMeetingInvitations" : "SendToAllAndSaveCopy"
},
"SavedItemFolderId": {
"DistinguishedFolderId": {
"attributes": {
"Id": "calendar"
}
}
},
"Items" : {
"CalendarItem" : {
"Subject" : "",
"Body" : {
"attributes" : {
},
"$value" : ""
},
"ReminderIsSet" : "true",
"ReminderMinutesBeforeStart" : "30",
"Start" : "",
"End" : "",
"IsAllDayEvent" : "false",
"LegacyFreeBusyStatus" : "Busy",
"Location" : ""
}
}
};
As the REST-API I'm writing will receive Attributes like Subject, Start, End etc. I initially stripped out those out of the JSON and would define them later like
args.Items.CalendarItem.Subject = req.body.Subject;
Oddly this will make the internal validation of node-ews fail and tell me that CalendarItem has an invalid Child Subject. If i leave Subject als an empty string in the initial args and later change it set it to req.body.Subject it works just fine.
My question is this: Is the Object somewhat different if I later add attributes and if yes is there a way to do it right? Because I don't think its the best way to have a bunch of empty Attributes in my Object if they aren't used and define standard values for all of them even if api won't require them to be sent.
Would great if someone knew the answer. Hope i could clarify what the problem is
Ok,
so the problem seems to be this. Internally the JSON "object" seems to have an order based on the order the variable is defined. in JavaScript this is no problem. But when the xml is parsed, the tag that was defined last will also be at the end of the xml so if you had
<someTag>
<variable2 />
<variable3 />
</someTag>
and you add variable1 to your json by someTag.variable1 = x in the end the xml will look like this after beeing parsed by node-ews
<someTag>
<variable2 />
<variable3 />
<variable1 >x</variable1>
</someTag>
Now unfortunately the exchange web server seems to be picky about the order of the xml tags. so when you build your json be sure to use the direct order. Changing content of the json later will not affect the order.
My database is formatted like this:
{
"latitude" : 41.884629,
"longitude" : -87.648764,
"name" : "Bar Siena",
"placeID" : "ChIJf3h_t9osDogReehZO7Hgk50",
"vibes" : {
"LGpswrvLgfYppcBG4bpmNzXQVoU2" : {
"rating" : 1,
"timestamp" : 1.477961061358844E9
},
"OSzA2KhTBWS3pxVnCZ6eScAuNDG3" : {
"rating" : 5,
"timestamp" : 1.477955566836665E9
}
}
}
I want to pull both the names of each bar, and every rating corresponding to it in the vibes table. My code looks like this:
firebase = pyrebase.initialize_app(config)
db = firebase.database()
for i in range(1,100):
venues = db.child("venues").child(i).get()
dict = (venues.val())
print(dict['name'])
So far i'm only able to get the names, but i'm not sure how to go deeper and get the ratings. My database is managed using Firebase, and I'm using a python library called Pyrebase that's just a wrapper for the javascript api. I'm having trouble because each vibe has a generated hash key so i'm not sure how to go deeper. Any thoughts?
vibes probably comes as a dictionary. What you want are the ratings of each hash key, so you can do something like
for hashkey, vibe_dict in dict['vibes'].items(): # dict is a Python keyword, so it's a bad choice for a variable!
print(hashkey, vibe_dict['rating'])
I am not sure about firebase, but in plain python you may do it like:
>>> for vibe in my_json['vibes'].values():
... print vibe['rating']
...
1 # Rating of item 1
5 # Rating of item 2
where my_json is the dict build from your json:
{
"latitude":41.884629,
"longitude":-87.648764,
"name":"Bar Siena",
"placeID":"ChIJf3h_t9osDogReehZO7Hgk50",
"vibes":{
"LGpswrvLgfYppcBG4bpmNzXQVoU2":{
"rating":1,
"timestamp":1.477961061358844E9
},
"OSzA2KhTBWS3pxVnCZ6eScAuNDG3":{
"rating":5,
"timestamp":1.477955566836665E9
}
}
}
If your venues variable is a JSON-like object as in example, you can use the standart json library to work with it:
import json
dict_data = json.loads(venues)
print dict_data['latitude']
Btw, it's a bad style of development - to overwrite built-in Python funuctions. In your example you're overwriting dict(dict is a default Python type-object)
So here is the issue. I have a straight export from mongodb collection as json flat file. I am trying to get my phantomjs app to read and parse the flat file from MongoDB and convert it into an object for phantomjs to parse. For some reason I cannot parse the JSON string normally.
(note: NO jQuery solutions. This needs to be raw javascript)
Here is my flat file from mongodb. It seems fine:
{ "host" : "www.myfoxphilly.com", "path" : "/category/233430/entertainment", "created_at" : { "$date" : 1375199393295 }, "_id" : { "$oid" : "51f7e0a1dc12a13510000002" } }{ "host" : "www.news9.com", "path" : "/category/112032/news", "created_at" : { "$date" : 1375285798173 }, "_id" : { "$oid" : "51f9322668ee1e660c000001" } }{ "host" : "www.myfoxphilly.com", "path" : "/category/233430/entertainment", "created_at" : { "$date" : 1375285823602 }, "_id" : { "$oid" : "51f9323f68ee1e660c000002" } }
Here is the config file that is attempting to parse the above JSON flat file
var fs = require('fs');
var data = fs.read('configData.json');
var newdata = JSON.stringify(data);
var dataobj = eval("["+newdata+"]");
console.log(typeof(newdata));
exports.tests = dataobj;
// Sample object (works fine like this):[{path:'/category/112043/sports' ,host:'www.newson6.com'}];
exports.getFileName = function(test,local) {
return 'results/' + test.host.replace(/\./g,'-').replace(/\:[0-9]+/,'').replace('-com','').replace('www-','') + test.path.replace(/\//g,'-').replace(/\?clienttype=/g, "clienttype") + ((local) ? '-locl' : '-prod')
}
So when I run phantom, I get no data. That JSON becomes one single object, instead of the object example I have in the comment section.
If I just replace the JS common library flat file import and make "data" a string, it works just fine, like so:
var data = '{"host" : "www.myfoxphilly.com", "path" : "/some/path/233409"}';
Is there some sort of issue going on with the js common library file import when I import the JSON in as a string? Help please.
ONCE AGAIN, no jQuery, I will down vote you without looking. I <3 jQuery, but you guys need to realize when it's appropriate to use (i.e. browser-based js).
OMG! You used eval ... :P I'm suprised this question hasn't already been down voted 5 times.
On the real, excellent question.
Your problem, if #DCoder has actually posted an answer, is your JSON. A 'flat file from mongodb' is not necessarily valid JSON. Further, to make it valid you're gonna need to parse the string first:
wrap it in square braces
make sure you have a comma after each data line exported from mongo.
Seriously, eval? Use JSON.parse twice on your converted string.
That should solve it. Everything else looks clean.
(.. eval .. I cant believe this scrub)
I need your help.
I want to change this graph: http://bl.ocks.org/mbostock/3885211 to read from a json file instead of tsv. That is the format of my Json file.
{
"name":"chrome" ,
"values": [
{ "time" : 1232323 , "value:" : 12},
{ "time" : 12323323 , "value:" : 19
]},
{
"counter":"Mozilla" ,
"values": [
{ "time" : 1232sd3 , "value:" : 18},
{ "time" : 11232323 , "value:" : 20}
]},
{
"name":"IE" ,
"values": [
{"time" : 12387823 ,"value:" : 100},
{"time" : 12323 ,"value:" : 123123}
]}
]
I have tried a lot but it does not work with Json file.
Really appreciate your help :(
OK. So I decided to spend some time and help you solve the problem. The conversion to JSON was poorly done (for the code that is written on the page).
A quick way to get json from the data would be to use vim to retab the data file before running it through a script like this one https://github.com/turian/common-scripts/blob/master/tsv-to-json.py
I created had to manually reformat the data (since I was just trying to set up an example) but you might want to change the code so that it writes into an array first before producing json (you may also need to change the common.json to json).
The complete example is hosted here http://jsfiddle.net/dvqFj/1/
Good luck
I want to create this parameter file so that I can send it to my web service.
var parms = {
"quiz_id":"120",
"owner_id":"1",
"solver_id":"1",
"answers":
[
{
"answer_text" : "YES",
"question_id" : "1"
},
{
"answer_text" : "NO",
"question_id" : "2"
},
{
"answer_text" : "YES",
"question_id" : "3"
},
{
"answer_text" : "YES",
"question_id" : "4"
},
{
"answer_text" : "YES",
"question_id" : "5"
}
]
};
I am stuck with the contents inside of the answers. I don't know how to create it dynamically.
for serializing Javascript objects to JSON strings either you can use
JSON.stringify(Object);
which is available in most of the latest browers, else you can use ExtJS inbuilt method
Ext.encode(Object);
and for deserializing JSON string you can use JSON.parse(JSONString) or Ext.decode(JSONString)
An easy way to do this is to create your data as a javascript object and then use a Json "stringifier" to turn it into a json string, which can then be passed to your server.
This same problem was answered previously at Serializing an object to JSON
If you use jquery (and I highly recommend it as a very useful tool for all serious javascript programmers), there is a nice plugin that I use for passing json back and forth in Ajax calls. See http://code.google.com/p/jquery-json/
Create an object with array and some objects inside and then look at the Ext.data.proxy.Server.encodeFilters() method.