明确定义的 Rails 路由问题 - Nil:NilClass 的未定义方法

发布于 2024-09-02 04:53:05 字数 980 浏览 4 评论 0原文

我已经研究这个问题有一段时间了，但仍然没有乐趣。这是我在这个一般领域内的第二个问题，因为最后一个问题太长了，现在这个问题定义得更加明确了。

问题摘要：

我正在为我的客户加载页面，但出现错误：

undefined method 'name' for Nil:NilClass

我的代码

#Link on views/users/show.html.erb:
<%= link_to "Customer Account", :action => "home", :controller => "customers", :id => @user.user_type_id %>

#Regular Route:
map.connect 'customers/home/:id', :controller => 'customers', :action => 'home'

#Rake Routes, first entry:
/customers/home/:id  :controller=>:"customers", :action=>"home"

#Customers Controller:
def home
  render :layout => 'home'
  @customer = Customer.find(params[:id])
  @user = @current_user_session.user
  flash[:error] = "Customer not found" and return unless @customer
  @jobs = @customer.jobs
end

#views/customers/home.html.erb:
<%= @customer.name %>

我完全不知道为什么这个看似清晰的事件序列会导致零级。在控制台中搜索 Customer.find(2) 返回正确的客户。这个菜鸟缺少什么？非常感谢。

原文

I have been working on this problem for a while but still no joy. This is my second question within this general area, because the last question was getting too long and this is now more well-defined.

Summary of the Problem:

I am loading a page for my customers and I get error:

undefined method 'name' for Nil:NilClass

My Code

#Link on views/users/show.html.erb:
<%= link_to "Customer Account", :action => "home", :controller => "customers", :id => @user.user_type_id %>

#Regular Route:
map.connect 'customers/home/:id', :controller => 'customers', :action => 'home'

#Rake Routes, first entry:
/customers/home/:id  :controller=>:"customers", :action=>"home"

#Customers Controller:
def home
  render :layout => 'home'
  @customer = Customer.find(params[:id])
  @user = @current_user_session.user
  flash[:error] = "Customer not found" and return unless @customer
  @jobs = @customer.jobs
end

#views/customers/home.html.erb:
<%= @customer.name %>

I have absolutely no idea why this seemingly clear sequence of events is resulting in a NilClass. Search the console for Customer.find(2) returns the correct customer. What is this noob missing? Thank you very much.

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活雷疯 2024-09-09 04:53:05

您在设置 @customer 之前渲染视图，因此它为零。请尝试以下操作：

def home
  @customer = Customer.find(params[:id])
  @user = @current_user_session.user
  flash[:error] = "Customer not found" and return unless @customer
  @jobs = @customer.jobs
  render :layout => 'home'
end

You are rendering the view before you set @customer, so it is nil. Try the following:

def home
  @customer = Customer.find(params[:id])
  @user = @current_user_session.user
  flash[:error] = "Customer not found" and return unless @customer
  @jobs = @customer.jobs
  render :layout => 'home'
end

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