我正在嘗試在我的建築物中爲網絡創建紅寶石軌道。我想用具有多個端口的交換機來設置它,並且每個端口都有一個名稱,插孔和空間。我在Ruby on Rails項目中遇到了一些麻煩
我發現了試圖查看一個開關時以下錯誤:
undefined method `port' for #<Switch:0x2b49d7643c90>
提取的源(圍繞線#2):
1: <h1><%= @switch.title %></h1>
2: <p><strong>Switch :</strong> <%= @switch.port.name %><br />
3: </p>
4: <p><%= @switch.description %></p>
5: <hr />
這是我的控制器方法:
class SwitchController < ApplicationController
def list
@switches = Switch.find(:all)
end
def show
@switch = Switch.find(params[:id])
end
def new
@switch = Switch.new
end
def create
@switch = Switch.new(params[:switch])
if @switch.save
redirect_to :action => 'list'
else
@ports = Port.find(:all)
render :action => 'new'
end
end
def edit
@switch = Switch.find(params[:id])
@ports = Port.find(:all)
end
def update
@switch = Switch.find(params[:id])
if @switch.update_attributes(params[:switch])
redirect_to :action => 'show', :id => @switch
else
@ports = Port.find(:all)
render :action => 'edit'
end
end
def delete
Switch.find(params[:id]).destroy
redirect_to :action => 'list'
end
def show_ports
@port = Port.find(params[:id])
end
end
這裏是我的模型:
class Switch < ActiveRecord::Base
has_many :ports
validates_uniqueness_of :title
end
class Port < ActiveRecord::Base
belongs_to :switch
validates_presence_of :name
validates_presence_of :jack
validates_presence_of :room
end
這裏是我的遷移:
class Switches < ActiveRecord::Migration
def self.up
create_table :switches do |t|
t.string :title
t.text :description
end
end
def self.down
drop_table :switches
end
end
class Ports < ActiveRecord::Migration
def self.up
create_table :ports do |t|
t.string :name
t.string :jack
t.string :room
end
Port.create :name => "1/0/1"
end
def self.down
drop_table :ports
end
end
最後,這裏是我的show.html.erb
<h1><%= @switch.title %></h1>
<p><strong>Switch :</strong> <%= @switch.port.name %><br />
</p>
<p><%= @switch.description %></p>
<hr />
<%= link_to 'Back', {:action => 'list'} %>
我知道我失蹤一些關鍵的代碼,預先感謝任何幫助!
謝謝,這非常有幫助!我已經轉向RoR的新版本,但您的建議仍然有用。 –