Question

（对不起我的英文）如果我想上传包含:name和:date参数的新记录，那就是我发现的内容：

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)

Answer 1

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）编辑您的控制器：

  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View文件夹中，名称也应为Plural，因此您的文件夹名称为app/view/actors。 2）更改您的控制器名称，如actors_controller。 3）在您的路线中，它应为resources :actors。 4）您需要通过正确的修改来对齐代码，以找到您的起点和结束位置。这是开始编码的好方法。它将解决您的50％问题，以找到您做错的地方。

Answer 2

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])

Answer 3

将您的新操作代码更改为：

@actor = Actors.new

并确认您的模型类是Actors 它可能有用。

Answer 4

这里有很多错误：

控制器名称应为复数，您必须将文件重命名为actors_controller.rb
模型名称应该是单数，也可以看到您将文件名更改为actor.rb
新操作应为@actor = Actors.new而不是create，＃create是#new和#save的缩短版本。
params哈希值应为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

同时更改Actor.rb中的模型名称，并确保它是模型的名称。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

Answer 5

@actor = Actors.create是错误的，因为它将@actor变量分配给新创建的Actors对象。这就是你在输出中看到Processing by ActorController#update as HTML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

RoR :.create nils

5 个答案: