Weather data coming out as nil

Help and Feedback Scripting Support
,
#1

I’m trying to get the current weather in San Diego with OpenWeatherMap. All of this is working except for one part: the description. When I print the output, everything comes out perfectly except for the description:

Output

Screenshot 2022-04-02 202858

As you can see, it all comes out as nil, and I have no idea why. I’m following this JSON response from the OpenWeatherMap tutorial on how to make an API call, too.

JSON response 
  "coord": {
    "lon": -122.08,
    "lat": 37.39
  },
  "weather": [
    {
      "id": 800,
      "main": "Clear",
      "description": "clear sky",
      "icon": "01d"
    }
  ],
  "base": "stations",
  "main": {
    "temp": 282.55,
    "feels_like": 281.86,
    "temp_min": 280.37,
    "temp_max": 284.26,
    "pressure": 1023,
    "humidity": 100
  },
  "visibility": 10000,
  "wind": {
    "speed": 1.5,
    "deg": 350
  },
  "clouds": {
    "all": 1
  },
  "dt": 1560350645,
  "sys": {
    "type": 1,
    "id": 5122,
    "message": 0.0139,
    "country": "US",
    "sunrise": 1560343627,
    "sunset": 1560396563
  },
  "timezone": -25200,
  "id": 420006353,
  "name": "Mountain View",
  "cod": 200
  }

And here is my code:

local RE = game.ReplicatedStorage:WaitForChild('SendWeather')

local httpService = game:GetService("HttpService")

local requestOptions = {
	Url = "http://api.openweathermap.org/data/2.5/weather?id=" .. 
	"5391811" .. -- id for city
	"&apikey=" ..
	'secretiveapikeyishallnotshow'; 
	Method = "GET";
}

local response = httpService:RequestAsync(requestOptions)
local responseBodyTable = httpService:JSONDecode(response.Body)

local function kelvinsToFahrenheit(temp)
	return temp * 9/5 - 459.67
end

if response.Success then -- if it succeeded (your API key is valid)
	local temperature = kelvinsToFahrenheit(tonumber(responseBodyTable.main.temp)) -- convert to fahrenheit
	local description = tostring(responseBodyTable.weather.description)
	local humidity = tostring(responseBodyTable.main.humidity)
	local clouds = tostring(responseBodyTable.clouds.all)
	print("san diego weather:", tostring(temperature) .. "°F") -- output the temperature
	print('san diego description: '..description)
	print('san diego humidity: '..humidity..'%')
	print(clouds)
	
	RE:FireAllClients(tostring(temperature) .. "°F", description, humidity..'%')
	
else
	error(responseBodyTable.message) -- throw an error based on the response they gave
end
#2 
if response.Success then -- if it succeeded (your API key is valid)
	local temperature = kelvinsToFahrenheit(tonumber(responseBodyTable.main.temp)) -- convert to fahrenheit
	local description = tostring(responseBodyTable.weather.description) --> "icon"

I dont know if the “icon” information is really an image… but I would replace it with “description”

"weather": [
    {
      "id": 800,
      "main": "Clear",
      "description": "clear sky",
      "icon": "01d"
    }
  ],
1 Like
#3

Quick question… is the icon a string?

#4

sorry i made a small mistake when I was testing. icon is supposed to be description

#5

When you change it to description does it work?

#6

it doesn’t work. it still returns as nil

#7

what about when you change it to main

#8

For some reason, it still returns as nil.

#9

Quick question: It isn’t because you are converting a string to a string?

#10

I think your issue is that you are trying to convert an already existing string into a string with tostring() therefore it is returning nil. Could be wrong but that’s what I think your issue is.

#11

When I remove the tostring(), it says "Workspace.Script:27: attempt to concatenate string with nil " in the output. So I think I have to convert it to a string.

#12

Ooo, Openweathermap, looks fun. :eyes:

Anyways, try the following instead:

local description = tostring(responseBodyTable.weather[1].description)
2 Likes
#13

Thanks for showing me the solution. Also, if you want an explanation on OpenWeatherMap, you can check this out.

1 Like