因此，我决定在用眼科带状疱疹签字的同时改善我的Ruby。
我编写了此脚本是为了从MetOffice的Datapoint API获取预测数据。
我被困住的是
#!/bin/ruby
# frozen_string_literal: true
#
# This script get the list of UK forecast locations
#
require 'pp'
require 'net/http'
require 'json'
require 'uri'
@apikey = 'insert-key-here'
@base_url = 'http://datapoint.metoffice.gov.uk/public/data/'
@format = 'json'
# Make API call to get list of UK locations
def sitelist_data
res = "val/wxfcs/all/#{@format}/sitelist?"
url = "#{@base_url}#{res}key=#{@apikey}"
url = URI.parse(url)
resp = Net::HTTP.get(url)
data = ::JSON.parse(resp)
data['Locations']['Location'] # Step into the array to get location list
end
# All i need from the list is Authority name and Site name
# Create a list to display all available locations
def sitelist
@fulllist = sitelist_data
region_list = {}
@fulllist.map do |k, _v|
k.each do |key, value|
@auth = value if key == 'unitaryAuthArea'
@name = value if key == 'name'
end
region_list[@auth] = @name
end
region_list # Return list of locations
end
# Get a 3 hrly forecast for the next 5 days for the chosen location
# Get the raw 3hrly data for a specific region
def three_hourly_forecast_raw(region)
res = 'val/wxfcs/all/'
reg = region
url = "#{@base_url}#{res}#{@format}/#{reg}?res=3hourly&key=#{@apikey}"
url = URI.parse(url)
resp = Net::HTTP.get(url)
data = ::JSON.parse(resp)
data['SiteRep']['DV']['Location'] # Step into array to get to forecasts data
end
# Get the headders from the data id, name, longitude and latittude
def three_hourly_forecast_headder(region)
raw_data = three_hourly_forecast_raw(region)
raw_data.each do |key, value|
@id = value if key == 'i'
@reg = value if key == 'name'
@lon = value if key == 'lon'
@lat = value if key == 'lat'
end
end
# Create a hash of the forecast data with new keys as
# the ones provided by met office are not great
def three_hourly_forecast_values(region)
three_hourly_forecast = {}
raw_data = three_hourly_forecast_raw(region)
raw_data['Period'].map do |key, _value|
@date = key['value']
key['Rep'].map do |weather_data, _v|
three_hourly_forecast[@date] = forecast_hash(weather_data)
end
end
end
# Compile weather data hash
def forecast_hash(weather_data)
{
hr: weather_data["\$"],
feels_like: weather_data['F'], # unit = c
w_gust: weather_data['G'], # unit = mph
rel_humid: weather_data['H'], # unit = %
temp: weather_data['T'], # unit = c
visability: weather_data['V'],
wind_dir: weather_data['D'], # unit = compass
wind_speed: weather_data['S'], # unit = mph
max_uv: weather_data['U'],
type: weather_data['W'],
percipitation_probability: weather_data['Pp'] # unit = %
}
end
pp three_hourly_forecast_values('310069')
运行脚本的那一刻，我得到了
[{:hr=>"0",
:feels_like=>"-1",
:w_gust=>"40",
:rel_humid=>"76",
:temp=>"4",
:visability=>"GO",
:wind_dir=>"NW",
:wind_speed=>"22",
:max_uv=>"0",
:type=>"7",
:percipitation_probability=>"13"},
{:hr=>"180",
:feels_like=>"-1",
:w_gust=>"40",
:rel_humid=>"75",
:temp=>"4",
:visability=>"GO",
:wind_dir=>"NW",
:wind_speed=>"22",
:max_uv=>"0",
:type=>"2",
:percipitation_probability=>"10"},
{:hr=>"360",
:feels_like=>"-1",
:w_gust=>"40",
:rel_humid=>"74",
:temp=>"4",
:visability=>"VG",
:wind_dir=>"NW",
:wind_speed=>"22",
:max_uv=>"0",
:type=>"2",
:percipitation_probability=>"6"},
{:hr=>"540",
:feels_like=>"-1",
:w_gust=>"36",
:rel_humid=>"74",
:temp=>"4",
:visability=>"VG",
:wind_dir=>"NNW",
:wind_speed=>"20",
:max_uv=>"1",
:type=>"3",
:percipitation_probability=>"4"},
{:hr=>"720",
:feels_like=>"1",
:w_gust=>"40",
:rel_humid=>"63",
:temp=>"6",
:visability=>"VG",
:wind_dir=>"NNW",
:wind_speed=>"22",
:max_uv=>"1",
:type=>"3",
:percipitation_probability=>"3"},
{:hr=>"900",
:feels_like=>"1",
:w_gust=>"34",
:rel_humid=>"63",
:temp=>"6",
:visability=>"VG",
:wind_dir=>"NW",
:wind_speed=>"20",
:max_uv=>"1",
:type=>"3",
:percipitation_probability=>"4"},
{:hr=>"1080",
:feels_like=>"0",
:w_gust=>"27",
:rel_humid=>"71",
:temp=>"4",
:visability=>"VG",
:wind_dir=>"NW",
:wind_speed=>"16",
:max_uv=>"0",
:type=>"0",
:percipitation_probability=>"3"},
{:hr=>"1260",
:feels_like=>"-1",
:w_gust=>"20",
:rel_humid=>"77",
:temp=>"3",
:visability=>"VG",
:wind_dir=>"NW",
:wind_speed=>"13",
:max_uv=>"0",
:type=>"0",
:percipitation_probability=>"3"}]
我想要的是日期作为每个哈希的键，所以看起来像这样。
[日期=> { 天气数据 }
我在做什么错？？
这纯粹是一个学习项目，因此它不一定是超级高效的，但如果您发现任何我可以改进的地方，请随时指出。
谢谢
答案 0 :(得分：1)
three_hourly_forecast_values方法将返回.map调用的结果，而不是返回在map块内部构建的新哈希，因为它是最后一个对象。您可以将three_hourly_forecast哈希作为该方法的最后一行，以返回新哈希。
def three_hourly_forecast_values(region)
three_hourly_forecast = {}
raw_data = three_hourly_forecast_raw(region)
raw_data['Period'].map do |key, _value|
@date = key['value']
three_hourly_forecast[@date] = []
key['Rep'].map do |weather_data, _v|
three_hourly_forecast[@date] << forecast_hash(weather_data)
end
end
three_hourly_forecast
end
答案 1 :(得分：1)
您正在将map_function内部的Three_hourly_forecast [@date]分配给Forecast_hash（weather_data）。 map函数返回最后一行，在这种情况下，它只是哈希hash_hash（weather_data）。更改每个地图以进行修复。
def three_hourly_forecast_values(region)
three_hourly_forecast = {}
raw_data = three_hourly_forecast_raw(region)
raw_data['Period'].each do |key, _value|
@date = key['value']
key['Rep'].each do |weather_data, _v|
three_hourly_forecast[@date] = forecast_hash(weather_data)
end
end
end
答案 2 :(得分：0)
我假设您将数据放入名为 data
的变量中data = [{:hr=>"0",
:feels_like=>"-1",
:w_gust=>"40",
:rel_humid=>"76",
:temp=>"4",
:visability=>"GO",
:wind_dir=>"NW",
:wind_speed=>"22",
:max_uv=>"0",
:type=>"7",
:percipitation_probability=>"13"},
]
data.each do |f|
f.merge!(date: "Whether data")
end
输出
[{:hr=>"0",
:feels_like=>"-1",
:w_gust=>"40",
:rel_humid=>"76",
:temp=>"4",
:visability=>"GO",
:wind_dir=>"NW",
:wind_speed=>"22",
:max_uv=>"0",
:type=>"7",
:percipitation_probability=>"13"},
:date => "Whether data"
]
这将在每个哈希后面附加键及其值。 希望对您有所帮助。