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一直在尝试在 rails 中安装 pundit gem，它没有出现在我的索引页面中，也不知道为什么，我的错误消息说

1) Error:
DeletingAPost Feature Test#test_0001_delete the post:
Capybara::ElementNotFound: Unable to find link or button "Destroy"
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/node/finders.rb:41:in `block in find'
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/node/base.rb:81:in `synchronize'
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/node/finders.rb:30:in `find'
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/node/actions.rb:13:in `click_link_or_button'
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/session.rb:354:in `block (2 levels) in <class:Session>'
    /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/capybara-2.1.0/lib/capybara/dsl.rb:51:in `block (2 levels) in <module:DSL>'
    /Users/cheatermoves/newHW/Portfolio/test/features/post_delete_post_test.rb:7:in `block (2 levels) in <top (required)>'

这是我的索引 html 帖子页面的副本

<h1>Listing posts</h1>

<table>
  <tr>
    <th>Title</th>
    <th>Content</th>
    <th></th>
    <th></th>
    <th></th>
  </tr>

<% @posts.each do |post| %>
  <tr id="<%= dom_id(post) %>">
    <td><%= post.title %></td>
    <td><%= post.content %></td>
    <td><%= link_to 'Show', post %></td>
    <% if policy(post).update? %>
    <td><%= link_to 'Edit', edit_post_path(post) %></td>
    <% end %>
    <% if policy(post).destroy? %>
       <td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      <% end %>
    </tr>
  <% end %>
</table>

<%= link_to 'New Post', new_post_path %>

这是我的政策页面的副本

class ApplicationPolicy
  attr_reader :user, :record

  def initialize(user, record)
    raise Pundit::NotAuthorizedError, "must be logged in" unless user
    @user = user
    @record = record
  end

  def index?
    false
  end

  def show?
    scope.where(:id => record.id).exists?
  end

  def create?
    false
  end

  def new?
    create?
  end

  def update?
    false
  end

  def edit?
    update?
  end

  def destroy?
    false
  end

  def scope
    Pundit.policy_scope!(user, record.class)
  end
end

class PostPolicy < ApplicationPolicy
  class Scope < Struct.new(:user, :scope)
    def resolve
      scope
    end
  end
end

我用设计安装的用户模型和我的帖子模型

class User < ActiveRecord::Base
  attr_accessible :role, :published

  def author?
    role == 'author'
  end

  def editor?
    role == 'editor'
  end
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me
  # attr_accessible :title, :body
  has_many :posts, foreign_key: "author_id"
end


class Post < ActiveRecord::Base
  attr_accessible :content, :title
  belongs_to :author, class_name: "User"

  def publish!
    published = true
    save!
  end
end

还有我的帖子控制器

抱歉，对我来说，这就像在干草堆中找到一根针，谁能指出我正确的方向？

4

2 回答 2

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很抱歉在旧帖子上回答，但为此，你的破坏？policy 自动为 false（您没有 destroy? 在 post 策略中，因此，您回退到 ApplicationPolicy），因此无论用户是谁，都不会创建删除按钮。

于 2014-10-24T18:36:31.747 回答
-1

您已注销 LimeChat，所以我无法实时回答您，添加到视图中的逻辑表明它们应该只填充应该有权访问这些操作的用户。因此，您可以尝试让您的登录用户进行测试，一个编辑器固定装置，因为现在理论上他们是唯一应该看到这些按钮填充的用户。

于 2013-10-21T04:28:25.830 回答