NameError（未初始化不斷薩翁::請求）

Question

我試圖用這個Ruby包裝器，https://github.com/mattetti/Pvwatts，但我有一個問題，我的控制器應用程序/控制器/ projects_controller.rb（相關摘錄）

require 'rubygems' 
require 'savon' 

class ProjectsController < ApplicationController 
    <snip> 
    def annual_production 
     <snip> 
     client = Savon::Client.new("http://pvwatts.nrel.gov/PVWATTS.asmx?WSDL") 
     production_data = Pvwatts.new("<key>").yearly_production(:locationId => @locationId, :dc_rating => @dc_rating, :tilt => @tilt, :azimuth => @azimuth, :derate => @derate, :cost => @cost, :array_type => @array_type) 
     <snip> 
     respond_to do |format| 
      if @project.update_attributes(params[:project]) 
       format.js 
       format.html 
      else 
       format.html { render :action => "update" } 
       format.json { render :json => @project.errors, :status => :unprocessable_entity } 
      end 
     end 
    end 
end 

class Pvwatts 
    Savon::Request.log = false 
    <snip> 
    def yearly_production(opts={}) 
     <snip> 
     client = Savon::Client.new("http://pvwatts.nrel.gov/PVWATTS.asmx?WSDL") 
     <snip> 
     req = prep_request(@locationId, @dc_rating, @tilt, @azimuth, @derate, @array_type, @cost) 
     response = client.get_pvwatts{|soap| soap.input = "GetPVWATTS"; soap.body = req } 
     <snip> 
    end 
end 

這是觸發SOAP請求

<input type=button id='pvwatt_update_button_id' value="Update from PVWatts" class='pvwatt_update_button_class'> 

當點擊該按鈕的按鍵的定義，我得到這個「500內部服務器錯誤」

Started GET "/projects/annual_production?id=4&keys=8<key>&reference_state=California&reference_city=San+Francisco&locationId=23234&dc_rating=1&tilt=20&azimuth=180&derate=80&cost=0.1&array_type=0" for <server_ip_address> at Tue Nov 20 20:07:18 -0800 2012 
Processing by ProjectsController#annual_production as */* 
Parameters: {"array_type"=>"0", "azimuth"=>"180", "locationId"=>"23234", "dc_rating"=>"1", "reference_city"=>"San Francisco", "keys"=>"<key>", "id"=>"4", "derate"=>"80", "reference_state"=>"California", "cost"=>"0.1", "tilt"=>"20"} 
Project Load (0.2ms) SELECT "projects".* FROM "projects" WHERE "projects"."id" = ? LIMIT 1 [["id", "4"]] 
Completed 500 Internal Server Error in 282ms 

NameError (uninitialized constant Savon::Request): 
app/controllers/projects_controller.rb:1697 
app/controllers/projects_controller.rb:1628:in `annual_production' 

Rendered /var/lib/gems/1.8/gems/actionpack-3.2.9/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.6ms) 
Rendered /var/lib/gems/1.8/gems/actionpack-3.2.9/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.2ms) 
Rendered /var/lib/gems/1.8/gems/actionpack-3.2.9/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (10.0ms) 

任何人都知道我做錯了什麼？

這裏是我安裝的寶石列出

root@sv-001:/home/user/myapp# gem list 

*** LOCAL GEMS *** 

actionmailer (3.2.9) 
actionpack (3.2.9) 
activemodel (3.2.9) 
activerecord (3.2.9) 
activeresource (3.2.9) 
activesupport (3.2.9) 
akami (1.2.0) 
arel (3.0.2) 
builder (3.0.4) 
bundler (1.2.2, 1.2.1) 
coffee-rails (3.2.2) 
coffee-script (2.2.0) 
coffee-script-source (1.4.0) 
erubis (2.7.0) 
execjs (1.4.0) 
git (1.2.5) 
gyoku (0.4.6) 
hike (1.2.1) 
httpi (1.1.1) 
i18n (0.6.1) 
jeweler (1.8.4) 
journey (1.0.4) 
jquery-rails (2.1.3) 
json (1.7.5) 
libv8 (3.3.10.4 x86-linux) 
mail (2.4.4) 
mime-types (1.19) 
multi_json (1.3.7) 
nokogiri (1.5.5) 
nori (1.1.3) 
polyglot (0.3.3) 
rack (1.4.1) 
rack-cache (1.2) 
rack-ssl (1.3.2) 
rack-test (0.6.2) 
rails (3.2.9) 
railties (3.2.9) 
rake (10.0.2, 10.0.1) 
rdoc (3.12) 
sass (3.2.3) 
sass-rails (3.2.5) 
savon (1.2.0) 
sprockets (2.2.1) 
sqlite3 (1.3.6) 
therubyracer (0.10.2) 
thor (0.16.0) 
tilt (1.3.3) 
treetop (1.4.12) 
tzinfo (0.3.35) 
uglifier (1.3.0) 
wasabi (2.5.1) 

，這裏是我的Ruby和Rails版本

root@sv-001:/home/user/myapp# gem -v 
1.8.15 
root@sv-001:/home/user/myapp# ruby -v 
ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-linux] 
root@sv-001:/home/user/myapp# rails -v 
Rails 3.2.9 
root@sv-001:/home/user/myapp# 

更新1

NoMethodError (undefined method `debug' for :logger:Symbol): 
app/controllers/projects_controller.rb:1757:in `yearly_production' 
app/controllers/projects_controller.rb:1638:in `annual_production' 

更新2

NoMethodError (undefined method `get_pvwatts' for #<Savon::Client:0xb275c15c>): 
app/controllers/projects_controller.rb:1737:in `yearly_production' 
app/controllers/projects_controller.rb:1628:in `annual_production' 

更新3

爲我工作的代碼如下：

Savon.configure do |c| 
    c.log = false 
    c.logger = Rails.logger 
end 

client = Savon::Client.new do 
    wsdl.document = "http://pvwatts.nrel.gov/PVWATTS.asmx?WSDL" 
end 

response = client.request :wsdl, "get_pvwatts" do 
    soap.body = req 
end 

rdata = response.to_hash 

Answer 1

自從它跨越1.x版本以來，Savon的語法已經發生了變化。你已經安裝了最新版本。

我使用名爲SoapUI的工具調查了有問題的web服務。我強烈建議在開發SOAP客戶端時使用它。您可以在編寫實際源代碼之前創建調用，並可以在SOAP級別上進行調試。 爲了給這個（傳統？）web服務，你需要明確地設置SOAPAction。

我把所有這些放在一個正常的Ruby腳本中。我沒有使用WSDL。 Savon的WSDL支持不完整。作者正在研究改進版本。我對命名空間和端點進行了「硬編碼」。

#!ruby 

require 'savon' 
require 'pp' 

Savon.configure do |c| 
    c.log = true 
    c.pretty_print_xml = true 
end 

client = Savon::Client.new do 
    # wsdl.document = "http://pvwatts.nrel.gov/PVWATTS.asmx?WSDL" 
    wsdl.endpoint = "http://pvwatts.nrel.gov/PVWATTS.asmx" 
    wsdl.namespace = "http://pvwatts.nrel.gov" 
end 

begin 
    response = client.request :pvw, "GetPVWATTS" do 
    http.headers['SOAPAction'] = '"http://pvwatts.nrel.gov/GetPVWATTS"' 
    soap.body = { 'pvw:key' => 'your_secret', 
        'pvw:latitude' => 43, 
        'pvw:longitude' => 280 } 
    end 
    pp response.to_hash 
rescue Savon::SOAP::Fault => error 
    print error 
end 

它不會在我的機器上返回有效的結果，因爲我缺少授權碼。讓我們知道這是否有助於您邁出下一步。

Answer 2

這個庫是很老了，它看起來像薩翁在過去的兩年中發生了變化。現在所討論的課程似乎被稱爲Savon::SOAP::Request，它不再有log=方法。僅僅通過眼球的代碼，我認爲你可以簡單地刪除所有對Savon::Request的引用，你應該沒問題。