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我有一个索引视图，列出了我的 Entry 和 Message 模型的所有标签。我只想在此视图中显示条目的标签。我正在使用作为可标记的行为。

标签控制器：

def index
  @letter = params[:letter].blank? ? 'a' : params[:letter]
  @tagged_entries = Tagging.find_all_by_taggable_type('Entry').map(&:taggable)
  @title = "Tags"
  if params[:letter] == '#'
    @data = Tag.find(@tagged_entries, :conditions => ["name REGEXP ?",
      "^[^a-z]"], :order => 'name', :select => "id, name")
  else
    @data = Tag.find(@tagged_entries, :conditions => ["name LIKE ?",
            "#{params[:letter]}%"], :order => 'name', :select => "id, name")
  end
  respond_to do |format|
    flash[:notice] = 'We are currently in Beta. You may experience errors.'
    format.html
  end
end

标签#索引：

<% @data.each do |t| %>
  <div class="tag"><%= link_to t.name.titleize, tag_path(t) %></div>
<% end %>

我只想在视图中显示可标记类型“条目”。有任何想法吗？感谢您阅读我的问题。

第二次编辑：

标签控制器：

def index
  @title = "Tags"
  @letter = params[:letter].blank? ? 'a' : params[:letter]

  @taggings = Tagging.find_all_by_taggable_type('Entry', :include => [:tag, :taggable])
  @tags = @taggings.map(&:tag).sort_by(&:name).uniq
  @tagged_entries = @taggings.map(&:taggable)#.sort_by(&:id)#or whatever

  if params[:letter] == '#'
    @data = Tag.find(@tags, :conditions => ["name REGEXP ?",
        "^[^a-z]"], :order => 'name', :select => "id, name")
  else
    @data = Tag.find(@tags, :conditions => ["name LIKE ?",
              "#{params[:letter]}%"], :order => 'name', :select => "id, name")
  end

  respond_to do |format|
    format.html
  end
end

标签#索引：

<% @data.each do |t| %>
  <div class="tag"><%= link_to t.name.titleize, tag_path(t) %></div>
<% end %>

Max Williams 的代码有效，除非我单击按字母顺序排列的分页链接。我得到的错误[点击字母分页的 G 链接后] 内容如下：

Couldn't find all Tags with IDs (77,130,115,...) AND (name LIKE 'G%') (found 9 results, but was looking for 129)

谁能指出我正确的方向？

4

1 回答 1

2 
  @taggings = Tagging.find_all_by_taggable_type('Entry', :include => [:tag, :taggable])
  @tags = @taggings.map(&:tag).sort_by(&:name)
  @tagged_entries = @taggings.map(&:taggable).sort_by(&:id)#or whatever
于 2010-06-07T09:59:33.640 回答