I am trying to get the rates from this website.
So I connect with website = Faraday.get('https://bitpay.com/api/rates')).status == 200 and then try to parse this.
A segment of the response I get is:
#<Faraday::Response:0x007fcf1ce25688
#env=
#<struct Faraday::Env
method=:get,
body=
"[{\"code\":\"BTC\",\"name\":\"Bitcoin\",\"rate\":1}, {\"code\":\"USD\",\"name\":\"US Dollar\",\"rate\":586.66},{\"code\":\"EUR\",\"name\":\"Eurozone Euro\",\"rate\":528.991322},{\"code\":\"GBP\",\"name\":\"Pound Sterling\",\"rate\":449.441986},{\"code\":\"JPY\",\"name\":\"Japanese Yen\",\"rate\":59907.95922},{\"code\":\"CAD\",\"name\"
When I do a website.body I get a String class of all these values found on that website. I want to parse them though (JSON?) so that I can get each rate as a float.
I tried something JSON.parse(website.body)["GBP"]["rate"].to_f but yet again it cannot work in a string.
The return I get is TypeError: no implicit conversion of String into Integer
I was having a similar (but not the same) format from a different rates website and this is how I was handling it. Do I need to change its format first or is there a different way around it?
You're trying to access to the parsed JSON with the key "GBP" but you have an array. It's like if you did
a = [1,2,3,4,5]
a['foo']
Try out
currencies = JSON.parse(website.body)
currencies.each { |currency| puts currency['rate'] }
and change it like you need
Related
I'm using this json content (I'm open to suggestions on better formatting here):
{"forwardingZones": [{"name": "corp.mycompany.com","dnsServers": ["192.168.0.1","192.168.0.2"]}]}
Note: we may add more items to this list as we scale out, both more IPs and more names, hence the "join(',')" in the end of the code below.
And I'm trying to loop through it to get this result:
corp.mycompany.com=192.168.0.1;192.168.0.2
Using this code:
forward_zones = node['DNS']['forward_zones'].each do |forwarded_zone|
forwarded_zone_name = forwarded_zone['name']
forwarded_zone_dns_servers = forwarded_zone['dns_servers'].join(';')
"#{forwarded_zone_name}=#{forwarded_zone_dns_servers}"
end.join(',')
This is the result that I get:
{"dnsServers"=>["192.168.0.1", "192.168.0.2"], "name"=>"corp.mycompany.com"}
What am i doing wrong...?
x.each returns x. You want x.map.
I’m using Rails 4.2.3. I’m trying to parse JSON data, so I have
content = ["{\"sEcho\":3,\"timestamp\":1464705752942,\"iTotalRecords\":1242,\"iTotalDisplayRecords\":1242,\"aaData\":[{\"externalId\":\"4279\"}]}"]
my_object_times_array = JSON.parse(content)
Sadly, the second line gives the error
no implicit conversion of Array into String
The JSON is well-formed (at least as far as I can tell) so I’m not sure what is causing the error above and how to fix it. I would prefer not to change the JSON.
content is an array, but JSON.parse expects a JSON String.
Example of usage from the documentation:
require 'json'
my_hash = JSON.parse('{"hello": "goodbye"}')
puts my_hash["hello"] => "goodbye"
Check the documentation here
So you could do following:
content = "{\"sEcho\":3,\"timestamp\":1464705752942,\"iTotalRecords\":1242,\"iTotalDisplayRecords\":1242,\"aaData\":[{\"externalId\":\"4279\"}]}"
my_object_times_array = JSON.parse(content)
or
content = ["{\"sEcho\":3,\"timestamp\":1464705752942,\"iTotalRecords\":1242,\"iTotalDisplayRecords\":1242,\"aaData\":[{\"externalId\":\"4279\"}]}"]
my_object_times_array = JSON.parse(content[0])
I am using Newtonsoft.Json to create the JSON to update add items to an index, but I get the following error when I POST the request:
{"error":{"code":"","message":"The request is invalid.","innererror":{"message":"parameters : Unable to translate bytes [E3] at index 752 from specified code page to Unicode.\r\n","type":"","stacktrace":""}}}
I know the error occurs with some non letter characters in some of the strings in the data that I am serializing. The string data comes from SQL, so I'm guessing something is going on to do with encoding that I cannot figure out.
When I inspect the JSON string, and put it in manually construct a request with the same data in Fiddler it all works fine.
Does anyone have any idea what might be the problem, and how I can work around it?
I found my own solution after a bit more digging.
Adding "StringEscapeHandling.EscapeNonAscii" to the serialization options solves the problem:
jsonSettings = new JsonSerializerSettings
{
Formatting = Newtonsoft.Json.Formatting.Indented,
ContractResolver = new CamelCasePropertyNamesContractResolver(),
DateTimeZoneHandling = DateTimeZoneHandling.Utc,
StringEscapeHandling = StringEscapeHandling.EscapeNonAscii
};
I am trying to integrate solr with java using solrj. The result retrieved are of the format
{
numFound=3,
start=0,
docs=[
SolrDocument{
id=IW-02,
name=iPod&iPodMiniUSB2.0Cable,
manu=Belkin,
manu_id_s=belkin,
cat=[
electronics,
connector
],
features=[
carpoweradapterforiPod,
white
],
weight=2.0,
price=11.5,
price_c=11.50,
USD,
popularity=1,
inStock=false,
store=37.7752,
-122.4232,
manufacturedate_dt=TueFeb1418: 55: 59EST2006,
_version_=1452625905160552448
}
Now this is the javabin format. How do I extract results from this? Have heard that solrj does convert the results to objects by itself. But cant figure out how.
Thanks for the help in advance.
Let solrReply be the response object. The you can access different parts of the result using appropriate params. Say you want docs, you can do:
docs = solrReply['docs']
if you want the first result you could do:
first = solrReply['docs'][0]
Within a result you can access each field in the same way.
I'm trying to figure out how to populate a table from a JSON array. So far, I can populate my table cells perfectly fine by using the following code:
self.countries = [[NSArray alloc]initWithObjects:#"Argentina",#"China",#"Russia",nil];
Concerning the JSON, I can successfully retrieve one line of text at a time and display it in a label. My goal is to populate an entire table view from a JSON array. I tried using the following code, but it still won't populate my table. Obviously I'm doing something wrong, but I searched everywhere and still can't figure it out:
NSURL *url = [NSURL URLWithString:#"http://BlahBlahBlah.com/CountryList"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
{
NSLog(#"%#",[JSON objectForKey:#"COUNTRIES"]);
self.countries = [JSON objectForKey:#"COUNTRIES"];
}
failure:nil];
[operation start];
I am positive that the data is being retrieved, because the NSLog outputs the text perfectly fine. But when I try setting my array equal to the JSON array, nothing happens. I know the code is probably wrong, but I think I'm on the right track. Your help would be much appreciated.
EDIT:
This is the text in the JSON file I'm using:
{
"COUNTRIES": ["Argentina", "China", "Russia",]
}
-Miles
It seems that you need some basic JSON parsing. If you only target iOS 5.0 and above devices, then you should use NSJSONSerialization. If you need to support earlier iOS versions, then I really recommend the open source JSONKit framework.
Having recommended the above, I myself almost always use the Sensible TableView framework to fetch all data from my web service and automatically display it on a table view. Saves me a ton of manual labor and makes app maintenance a breeze, so it's probably something to consider too. Good luck!