我有一个名为“exposures”的控制器，它是通过脚本/生成脚手架调用自动创建的。脚手架页面工作正常。我在曝光控制器中创建了一个名为“测试”的自定义操作。当我尝试调用该页面（http://127.0.0.1:3000/exposures/test/1）时，我得到一个空白的白色屏幕，源代码中根本没有文本。
我在开发环境中使用 Rails 2.3.8 和 mongrel。development.log 中没有任何条目，用于打开 mongrel 的控制台出现以下错误：
您可能期望有一个 Array 的实例。评估 nil.split> D:/Rails/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/cgi_process.rb:52:in
dispatch_cgi' D:/Rails/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:101:indispatch_cgi' D:/Rails/时发生错误ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:27:indispatch' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel/rails.rb:76:inprocess' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel- 1.1.2-x86-mswin32/bin/../lib/mongrel/rails.rb:74:insynchronize' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel/rails.rb:74:inprocess' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86 -mswin32/bin/../lib/mongrel.rb:159:在process_client' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:158:in每个'D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/.. /lib/mongrel.rb:158:inprocess_client' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:285:inrun' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb: 285：在initialize' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:285:in新的'D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:285:inrun' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:268:in初始化'D:/Rails/ ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:268:innew' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel.rb:268:inrun' D:/Rails/ruby/lib/ruby/gems /1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel/configurator.rb:282 :在run' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel/configurator.rb:281:in每个'D:/Rails/ruby/lib/ruby/gems/1.8/gems/ mongrel-1.1.2-x86-mswin32/bin/../lib/mongrel/configurator.rb:281:inrun' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/mongrel_rails:128:inrun' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2 -x86-mswin32/bin/../lib/mongrel/command.rb:212:inrun' D:/Rails/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.2-x86-mswin32/bin/mongrel_rails:281 D:/Rails/ruby/bin/mongrel_rails:19:inload' D:/Rails/ruby/bin/mongrel_rails:19
这是 exposures_controller 代码：
class ExposuresController < ApplicationController
# GET /exposures
# GET /exposures.xml
def index
@exposures = Exposure.all
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @exposures }
end
end
#/exposure/graph/1
def graph
@exposure = Exposure.find(params[:id])
project_name = @exposure.tender.project.name
group_name = @exposure.tender.user.group.name
tender_desc = @exposure.tender.description
direction = "Cash Out"
direction = "Cash In" if @exposure.supply
currency_1_and_2 = "#{@exposure.currency_in} => #{@exposure.currency_out}"
title = "#{project_name}:#{group_name}:#{tender_desc}/n"
title += "#{direction}:#{currency_1_and_2}"
factors = Array.new
carrieds = Array.new
days = Array.new
@exposure.rates.each do |r|
factors << r.factor
carrieds << r.carried
days << r.day.to_s
end
max = (factors+carrieds).max
min = (factors+carrieds).min
g = Graph.new
g.title(title, '{font-size: 12px;}')
g.set_data(factors)
g.line_hollow(2, 4, '0x80a033', 'Bounces', 10)
g.set_x_labels(days)
g.set_x_label_style( 10, '#CC3399', 2 );
g.set_y_min(min*0.9)
g.set_y_max(max*1.1)
g.set_y_label_steps(5)
render :text => g.render
end
def test
render :text => "this works"
end
# GET /exposures/1
# GET /exposures/1.xml
def show
@exposure = Exposure.find(params[:id])
@graph = open_flash_chart_object(700,250, "/exposures/graph/#{@exposure.id}")
#@graph = "/exposures/graph/#{@exposure.id}"
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @exposure }
end
end
# GET /exposures/new
# GET /exposures/new.xml
def new
@exposure = Exposure.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @exposure }
end
end
# GET /exposures/1/edit
def edit
@exposure = Exposure.find(params[:id])
end
# POST /exposures
# POST /exposures.xml
def create
@exposure = Exposure.new(params[:exposure])
respond_to do |format|
if @exposure.save
flash[:notice] = 'Exposure was successfully created.'
format.html { redirect_to(@exposure) }
format.xml { render :xml => @exposure, :status => :created, :location => exposure }
else
format.html { render :action => "new" }
format.xml { render :xml => @exposure.errors, :status => unprocessable_entity}
end
end
end
# PUT /exposures/1
# PUT /exposures/1.xml
def update
@exposure = Exposure.find(params[:id])
respond_to do |format|
if @exposure.update_attributes(params[:exposure])
flash[:notice] = 'Exposure was successfully updated.'
format.html { redirect_to(@exposure) }
format.xml { head :ok }
else
format.html { render :action => "edit" }
format.xml { render :xml => @exposure.errors, :status => unprocessable_entity}
end
end
end
# DELETE /exposures/1
# DELETE /exposures/1.xml
def destroy
@exposure = Exposure.find(params[:id])
@exposure.destroy
respond_to do |format|
format.html { redirect_to(exposures_url) }
format.xml { head :ok }
end
end
end
聪明的读者会注意到“图表”动作。这就是我真正想要的工作，但如果我什至无法让测试操作正常工作，那么我确定我没有机会。
有任何想法吗？我已经重新启动了 mongrel 几次，没有任何变化。
这是 Rake 路由的输出（但我不认为这是问题所在。错误将以 HTML 错误响应的形式出现）。
D:\Rails\rails_apps\fx>rake routes
(in D:/Rails/rails_apps/fx)
DEPRECATION WARNING: Rake tasks in vendor/plugins/open_flash_chart/tasks are deprecated. Use lib/tasks instead. (called from D:/
by/gems/1.8/gems/rails-2.3.8/lib/tasks/rails.rb:10)
rates GET /rates(.:format) {:controller=>"rates", :action=>"index"}
POST /rates(.:format) {:controller=>"rates", :action=>"create"}
new_rate GET /rates/new(.:format) {:controller=>"rates", :action=>"new"}
edit_rate GET /rates/:id/edit(.:format) {:controller=>"rates", :action=>"edit"}
rate GET /rates/:id(.:format) {:controller=>"rates", :action=>"show"}
PUT /rates/:id(.:format) {:controller=>"rates", :action=>"update"}
DELETE /rates/:id(.:format) {:controller=>"rates", :action=>"destroy"}
tenders GET /tenders(.:format) {:controller=>"tenders", :action=>"index"}
POST /tenders(.:format) {:controller=>"tenders", :action=>"create"}
new_tender GET /tenders/new(.:format) {:controller=>"tenders", :action=>"new"}
edit_tender GET /tenders/:id/edit(.:format) {:controller=>"tenders", :action=>"edit"}
tender GET /tenders/:id(.:format) {:controller=>"tenders", :action=>"show"}
PUT /tenders/:id(.:format) {:controller=>"tenders", :action=>"update"}
DELETE /tenders/:id(.:format) {:controller=>"tenders", :action=>"destroy"}
exposures GET /exposures(.:format) {:controller=>"exposures", :action=>"index"}
POST /exposures(.:format) {:controller=>"exposures", :action=>"create"}
new_exposure GET /exposures/new(.:format) {:controller=>"exposures", :action=>"new"}
edit_exposure GET /exposures/:id/edit(.:format) {:controller=>"exposures", :action=>"edit"}
exposure GET /exposures/:id(.:format) {:controller=>"exposures", :action=>"show"}
PUT /exposures/:id(.:format) {:controller=>"exposures", :action=>"update"}
DELETE /exposures/:id(.:format) {:controller=>"exposures", :action=>"destroy"}
currencies GET /currencies(.:format) {:controller=>"currencies", :action=>"index"}
POST /currencies(.:format) {:controller=>"currencies", :action=>"create"}
new_currency GET /currencies/new(.:format) {:controller=>"currencies", :action=>"new"}
edit_currency GET /currencies/:id/edit(.:format) {:controller=>"currencies", :action=>"edit"}
currency GET /currencies/:id(.:format) {:controller=>"currencies", :action=>"show"}
PUT /currencies/:id(.:format) {:controller=>"currencies", :action=>"update"}
DELETE /currencies/:id(.:format) {:controller=>"currencies", :action=>"destroy"}
projects GET /projects(.:format) {:controller=>"projects", :action=>"index"}
POST /projects(.:format) {:controller=>"projects", :action=>"create"}
new_project GET /projects/new(.:format) {:controller=>"projects", :action=>"new"}
edit_project GET /projects/:id/edit(.:format) {:controller=>"projects", :action=>"edit"}
project GET /projects/:id(.:format) {:controller=>"projects", :action=>"show"}
PUT /projects/:id(.:format) {:controller=>"projects", :action=>"update"}
DELETE /projects/:id(.:format) {:controller=>"projects", :action=>"destroy"}
groups GET /groups(.:format) {:controller=>"groups", :action=>"index"}
POST /groups(.:format) {:controller=>"groups", :action=>"create"}
new_group GET /groups/new(.:format) {:controller=>"groups", :action=>"new"}
edit_group GET /groups/:id/edit(.:format) {:controller=>"groups", :action=>"edit"}
group GET /groups/:id(.:format) {:controller=>"groups", :action=>"show"}
PUT /groups/:id(.:format) {:controller=>"groups", :action=>"update"}
DELETE /groups/:id(.:format) {:controller=>"groups", :action=>"destroy"}
users GET /users(.:format) {:controller=>"users", :action=>"index"}
POST /users(.:format) {:controller=>"users", :action=>"create"}
new_user GET /users/new(.:format) {:controller=>"users", :action=>"new"}
edit_user GET /users/:id/edit(.:format) {:controller=>"users", :action=>"edit"}
user GET /users/:id(.:format) {:controller=>"users", :action=>"show"}
PUT /users/:id(.:format) {:controller=>"users", :action=>"update"}
DELETE /users/:id(.:format) {:controller=>"users", :action=>"destroy"}
/:controller/:action/:id
/:controller/:action/:id(.:format)
在此先感谢您的帮助
-乔恩