0

（对不起我的英语）如果我想用:name和:date参数上传一条新记录，这就是我发现的：

控制器：

  class ActorController < ApplicationController
    def index
    end

    def new
      @actor = Actors.create
    end

    def create
      @actor = Actors.create(params[:actors])
      if @actor.save
        redirect_to actor_path, :notice => "Your actor was saved."
      else
        render "new"
      end
    end
  end

型号：（actors.rb）

  class Actors < ActiveRecord::Base 
    attr_accessible :birth, :name
  end

和视图：（new.html.erb）

<%= form_for(@actor) do |a| %>
  <%= a.text_field :name %>
  <%= a.text_field :birth %>
  <%= a.submit %>
<% end %>

我在本地服务器控制台中的输出是：

Started PUT "/actor/40" for 127.0.0.1 at 2013-03-27 13:38:15 +0100
Processing by ActorController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"BKhrP1Rfkco7r05wPT758M3CHQXRP5l5jcul77oTLPw=", "actors"=>{"name"=>"Bunny", "birth"=>"19/21/21"}, "commit"=>"Update Actors", "id"=>"40"}
   (1.2ms)  begin transaction
  SQL (0.7ms)  INSERT INTO "actors" ("birth", "created_at", "name", "updated_at") VALUES (?, ?, ?, ?)  [["birth", nil], ["created_at", Wed, 27 Mar 2013 12:38:15 UTC +00:00], ["name", nil], ["updated_at", Wed, 27 Mar 2013 12:38:15 UTC +00:00]]
   (197.8ms)  commit transaction
   (0.2ms)  begin transaction
   (0.1ms)  commit transaction
Redirected to http://localhost:3000/actor/40
Completed 302 Found in 209ms (ActiveRecord: 200.0ms)
4

5 回答 5

3

请编辑以下内容：

1）编辑您的模型：

class Actor < ActiveRecord::Base  # Class name should be Singular
  attr_accessible :birth, :name
end

2）编辑你的控制器：

  class ActorsController < ApplicationController # Note Here the controller name should be plural without space
    def index
    end

    def new
      @actor = Actor.new  # In the new action, it should be classname.new not create
    end

    def create
      @actor = Actor.create(params[:actor]) # Here also the Actor class name should be singular
      if @actor.save
        redirect_to actor_path, :notice => "Your actor was saved."
      else
        render "new"
      end
    end
  end

PS:

1）在视图文件夹名称也应该是复数，所以你的文件夹名称是app/view/actors. 2）更改您的控制器名称，如actors_controller. 3）在您的路线中，它应该是resources :actors. 4）您需要将您的代码与正确的缩进对齐，以找到您从哪里开始和在哪里结束。这是开始编码的好方法。它会解决你 50% 的问题，找出你做错的地方。

于 2013-03-27T12:48:18.900 回答
0

将您的新操作代码更改为：

@actor = Actors.new

并确认您的模型类是 Actors 它可能有效。

于 2013-03-27T12:47:45.713 回答
0

@actor = Actors.create是错误的，因为它将 @actor 变量分配给新创建的 Actors 对象。这就是您Processing by ActorController#update as HTML在输出中看到的原因，因为该对象已经创建并且正在尝试更新它。

您应该将其更改为@actor = Actors.new

于 2013-03-27T12:58:49.133 回答
0

在您的控制器操作中，您的参数名称错误：

Actors.create(params[:movie]) should be Actors.create(params[:actors])
于 2013-03-27T12:42:10.287 回答
0

这里有很多问题：

  1. 控制器名称应为复数，您必须将文件重命名为actors_controller.rb

  2. 模型名应该是单数，也看你把文件名改成actor.rb

  3. 新动作应该是@actor = Actors.newnot create，#create 是 #new 和 #save 的较短版本。

  4. 参数哈希应该是params[:actor]

class ActorsController < ApplicationController   
     def index   
     end

     def new
        @actor = Actor.new   
     end

     def create
        @actor = Actor.create(params[:actor])
        if @actor.save
            redirect_to actor_path, :notice => "Your actor was saved."
        else
            render "new"
        end   
     end 
  end

还要更改 Actor.rb 中的模型名称，并确保这是模型的名称。同样在这种情况下，您应该检查您的迁移。

  class Actor < ActiveRecord::Base 
    attr_accessible :birth, :name
  end
于 2013-03-27T12:49:08.490 回答