Class: WeatherReportForecasts

Inherits:
Array
  • Object
show all
Includes:
WeatherReportLocation
Defined in:
lib/weather_report.rb

Overview

A collection of forecasts for a particular location

Defined Under Namespace

Classes: WeatherReportForecast

Constant Summary

Constants included from WeatherReportLocation

WeatherReportLocation::TITLE

Instance Attribute Summary collapse

Attributes included from WeatherReportLocation

#country, #latitude, #longtitude, #name

Instance Method Summary collapse

Methods included from WeatherReportLocation

#loadLocation

Constructor Details

#initialize(document) ⇒ WeatherReportForecasts

Constructs the weather forecasts from an XML string or file containing the XML in BBC Backstage weather format



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# File 'lib/weather_report.rb', line 133

def initialize(document)
  doc = REXML::Document.new document
  @reading_date = DateTime.now
  loadLocation(doc)
  doc.elements.each("rss/channel/image/url") { |element| @image_url = element.text }
  
  doc.elements.each("rss/channel/item/") { |element| 
    self << WeatherReportForecast.new(element)
  }
  
  raise WeatherReport::WeatherReportFormatError if length == 0
  
  rescue
    raise WeatherReport::WeatherReportFormatError
end

Instance Attribute Details

#image_url ⇒ Object (readonly)

Returns the value of attribute image_url.



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# File 'lib/weather_report.rb', line 130

def image_url
  @image_url
end

#reading_date ⇒ Object (readonly)

Returns the value of attribute reading_date.



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# File 'lib/weather_report.rb', line 130

def reading_date
  @reading_date
end

Instance Method Details

#for(date = Date.today) ⇒ Object

Returns a forecast for a day given by a Date, DateTime, Time, or a string that can be parsed to a date. If there is no forecast for the given date then nil is returned.



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# File 'lib/weather_report.rb', line 161

def for(date = Date.today)
  date = case date.class.name
         when 'String'
           Date.parse(date)
         when 'Date'
           date
         when 'DateTime'
           Date.new(date.year, date.month, date.day)
         when 'Time'
           Date.new(date.year, date.month, date.day)
         end
  
  day = nil
  self.each do |fd|
    day = fd if date == fd.date
  end
  return day
end

#for_today ⇒ Object

Returns the forecast for today, or nil is there is no such forecast.



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# File 'lib/weather_report.rb', line 150

def for_today
  self.for(Date.today)
end

#for_tomorrow ⇒ Object

Returns the forecast for tomorrow, or nil is there is no such forecast.



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# File 'lib/weather_report.rb', line 155

def for_tomorrow
  self.for(Date.today+1)
end