标记在我的视图中不显示

Question

我使用activeadmin并充当可标记gem。当我在activeadmin上插入标签时，它会保存标签，但不会在视图

中显示标签

activeadmin模型:

   ActiveAdmin.register Project do      
     index do
        column :id
        column :name
        column :created_at
        column :tag_list
        default_actions  
    end
    form(:html => { :multipart => true }) do |f|
        f.inputs do
        f.input :name
        f.input :tag_list, :label => "Tags", :hint => 'Comma separated'
        f.input :content, :input_html => {:class => "ckeditor"}
        f.input :image, :as => :file
    end
        f.buttons
    end 
   end

模型:

class Project < ActiveRecord::Base
  attr_accessible :content, :name, :image, :tag_list
  mount_uploader :image, ImageUploader
  acts_as_taggable
  def previous_project
    self.class.first(:conditions => ["name < ?", name], :order => "name desc")
  end
  def next_project
    self.class.first(:conditions => ["name > ?", name], :order => "name asc")
  end
end

视图:

<% @projects.each do |project| %>
    <figure class="d1-d3">
        <%= image_tag project.image_url(:thumb) if project.image? %>
        <figcaption>
            <h4><%= link_to project.name, project %></h4>
            <% project.tag_list %>
        </figcaption>
    </figure>
<% end %>

我尝试使用<%= project.tags %>，它也不工作

谢谢

Answer 1

尝试将其添加到您的项目模型(在acts_as_taggable下面)

acts_as_taggable_on :tags

并且记得运行迁移，例如:

create_table :tags do |t|
  t.string :name
end
create_table :taggings do |t|
  t.references :tag
  # You should make sure that the column created is
  # long enough to store the required class names.
  t.references :taggable, :polymorphic => true
  t.references :tagger, :polymorphic => true
  # limit is created to prevent mysql error o index lenght for myisam table type.
  # http://bit.ly/vgW2Ql
  t.string :context, :limit => 128
  t.datetime :created_at
end
add_index :taggings, :tag_id
add_index :taggings, [:taggable_id, :taggable_type, :context]

Answer 2

怎么样:

  row :tags do
    resource.tag_list.join(", ")
  end

Answer 3

视图中缺少等号

视图:

<% @projects.each do |project| %>
    <figure class="d1-d3">
        <%= image_tag project.image_url(:thumb) if project.image? %>
        <figcaption>
            <h4><%= link_to project.name, project %></h4>
            <%= project.tag_list %>
        </figcaption>
    </figure>
<% end %>