README.md

Description

Dashing widget to display weather from forecast.io. This widget was forked from https://gist.github.com/mjamieson/5274790 to add Skycons and the forecast for later in the day.

##Screenshot

##Usage

To use this widget, copy forecast.coffee, forecast.html, and forecast.scss into the /widgets/forecast directory. Put the forecast.rb file in your /jobs folder.

Get skycons.js from https://github.com/darkskyapp/skycons and put it in your assets/javascripts directory.

To include the widget in a dashboard, add the following to your dashboard layout file:

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="forecast" data-view="Forecast" data-widget_title="<img src='http://forecast.io/favicon.ico' />Weather Forecast"> ></div>
</li>

##Settings

• Forecast API Key from developer.forecast.io
• Latitude and Longitude for your desired location. Easily obtained from forward geocoding sites such as geocoder.ca
• Configurable temperature units. (US, SI, UK)
• Default schedule set to fetch weather every 5 minutes but can be changed from within forcast.rb.

forecast.coffee

class Dashing.Forecast extends Dashing.Widget

  # Overrides Dashing.Widget method in dashing.coffee
  @accessor 'updatedAtMessage', ->
    if updatedAt = @get('updatedAt')
      timestamp = new Date(updatedAt * 1000)
      hours = timestamp.getHours()
      minutes = ("0" + timestamp.getMinutes()).slice(-2)
      "Updated at #{hours}:#{minutes}"

  constructor: ->
    super
    @forecast_icons = new Skycons({"color": "white"})
    @forecast_icons.play()

  ready: ->
    # This is fired when the widget is done being rendered
    @setIcons()

  onData: (data) ->
    # Handle incoming data
    # We want to make sure the first time they're set is after ready()
    # has been called, or the Skycons code will complain.
    if @forecast_icons.list.length
      @setIcons()

  setIcons: ->
    @setIcon('current_icon')
    @setIcon('next_icon')
    @setIcon('later_icon')

  setIcon: (name) ->
    skycon = @toSkycon(name)
    @forecast_icons.set(name, eval(skycon)) if skycon

  toSkycon: (data) ->
    if @get(data)
      'Skycons.' + @get(data).replace(/-/g, "_").toUpperCase()

forecast.html

<div class="widget-title" data-bind="widget_title | raw"></div>
<div class="updated-at" data-bind="updatedAtMessage"></div>

<div>
	<h1 class="title">RIGHT NOW</h1>
	<canvas id="current_icon" class="forecast-icon" width="85px" height="85px"></canvas>
  	<div class="temp" data-bind="current_temp | raw"></div>
  	<div class="summary" data-bind="current_desc | raw"></div>
</div>

<div style="margin-top: 10px">
	<h1 class="title">NEXT HOUR</h1>
	<canvas id="next_icon" class="forecast-icon" width="25px" height="25px"></canvas>
	<div class="summary" data-bind="next_desc | raw"></div>
</div>

<div style="margin-top: 10px">
	<h1 class="title">LATER</h1>
	<canvas id="later_icon" class="forecast-icon" width="25px" height="25px"></canvas>
	<div class="summary" data-bind="later_desc | raw"></div>
</div>

forecast.rb

require 'net/https'
require 'json'

# Forecast API Key from https://developer.forecast.io
forecast_api_key = ""

# Latitude, Longitude for location
forecast_location_lat = "45.429522"
forecast_location_long = "-75.689613"

# Unit Format
# "us" - U.S. Imperial
# "si" - International System of Units
# "uk" - SI w. windSpeed in mph
forecast_units = "si"
  
SCHEDULER.every '5m', :first_in => 0 do |job|
  http = Net::HTTP.new("api.forecast.io", 443)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_PEER
  response = http.request(Net::HTTP::Get.new("/forecast/#{forecast_api_key}/#{forecast_location_lat},#{forecast_location_long}?units=#{forecast_units}"))
  forecast = JSON.parse(response.body)  
  forecast_current_temp = forecast["currently"]["temperature"].round
  forecast_current_icon = forecast["currently"]["icon"]
  forecast_current_desc = forecast["currently"]["summary"]
  if forecast["minutely"]  # sometimes this is missing from the response.  I don't know why
    forecast_next_desc  = forecast["minutely"]["summary"]
    forecast_next_icon  = forecast["minutely"]["icon"]
  else
    puts "Did not get minutely forecast data again"
    forecast_next_desc  = "No data"
    forecast_next_icon  = ""
  end
  forecast_later_desc   = forecast["hourly"]["summary"]
  forecast_later_icon   = forecast["hourly"]["icon"]
  send_event('forecast', { current_temp: "#{forecast_current_temp}°", current_icon: "#{forecast_current_icon}", current_desc: "#{forecast_current_desc}", next_icon: "#{forecast_next_icon}", next_desc: "#{forecast_next_desc}", later_icon: "#{forecast_later_icon}", later_desc: "#{forecast_later_desc}"})
end

forecast.scss

// ----------------------------------------------------------------------------
// Sass declarations
// ----------------------------------------------------------------------------
$background-color:  #3CAEEC;

$full-color:  rgba(255, 255, 255, 1);
$light-color: rgba(255, 255, 255, 0.7);

// ----------------------------------------------------------------------------
// Widget-forecast styles
// ----------------------------------------------------------------------------
.widget-title {
  
    color: $light-color;
    font-size: 15px;
    text-align: left;
    text-transform: uppercase;
    position: absolute;
    top: 5px;

	img {
    	vertical-align: baseline;
    	margin-right: 5px;
    	height: 16px;
	}
}

.widget-forecast {

  background-color: $background-color;
  padding-top: 15px !important;

  h1 {
    margin-bottom: 0px;
  }

  .updated-at {
    color: rgba(0, 0, 0, 0.3);
    top: 5px;
    right: 10px;
    left: auto;
  }

  .title {
    color: $light-color;
    text-align: left;
    font-size: 25px;
  }

  .temp {
    color: $full-color;
    text-align: left;
    font-size: 45px;
  }

  .summary {
    color: $full-color;
    text-align: left;
    vertical-align: middle;
    font-size: 17px;
  }

  .forecast-icon {
    float: left;
    text-align: left;
    margin-right: 20px;
  }

  .more-info {
      color: $light-color;
  }

}

The widget works fine, but I never get "minutely" data, so the Later field is always "no data". Any ideas how to troubleshoot this?

Using the current master branch of skycons.js wouldn't draw for me

but this commit worked

https://github.com/darkskyapp/skycons/blob/c944f36a9eb8fd1df81d3fd68f618f580ddd605b/skycons.js

@DanBeard: That was helpful +1

Just a note that your screen grab shows Last Update at the bottom but your code actually places it in the top corner of the widget. Thought maybe there was an error in the code somewhere before I realized that was intentional.

I can't get the skycons to display. I've tried the branch that @DanBeard mentioned, but that doesn't work for me either.

@nigelhorne same here. did you manage to figure it out?

It appears that @forecast_icons.list.length for some reason alwaya 0.. so the @setIcons() will not run.

I got the skycons working by changing forecast.coffee lines 24 from

if @forecast_icons.list.length

to

if (data.current_icon && data.next_icon && data.later_icon)