重构acts_as_taggable建议？

Question

我有一个专业列表的应用程序，每个人都用gem上的acts-as-taggable-tags来标记类别。我有一个页面，您可以按类别浏览专业。所以，你看到的类别和分类下的类别是专业列表。

我categories_controller.rb文件：

def index 
    @creative = Major.tagged_with("creative arts") 
    @engineering = Major.tagged_with("engineering and technology") 
    @mechanics = Major.tagged_with("mechanics and construction") 
    @transportation = Major.tagged_with("transportation") 
    @science = Major.tagged_with("science") 
    @math = Major.tagged_with("math") 
    @resources = Major.tagged_with("natural resources") 
    @healthcare = Major.tagged_with("health care") 
    @social_sciences = Major.tagged_with("social sciences") 
    @education = Major.tagged_with("education") 
    @law = Major.tagged_with("law") 
    @management = Major.tagged_with("management and marketing") 
    @administrative = Major.tagged_with("administrative and clerical") 
    @services = Major.tagged_with("services") 
    @tags = Major.tag_counts 
end 

你可以看到重复。这是复杂的视图模板。

这里是index.html.erb页的一部分：每个类别

<!-- Creative Arts --> 
<h2 class="major-categories-landing">Creative Arts</h2> 

<% @creative.sample(10).each do |creative| %> 
<%= link_to creative, class: 'span2 category-landing' do %> 
    <%= image_tag creative.image(:similar), class: 'img-polaroid', id: 'category-landing-list' %> 
    <p class="category-landing-list-name"><%= creative.name %></p> 
<% end %> 
<% end %> 

<%= link_to "View all #{@creative.count} majors in this category.", category_path("creative arts"), class: "view-category-show-page" %> 


<!-- Social Sciences --> 
<h2 class="major-categories-landing">Social Sciences</h2> 

<% @social_sciences.sample(10).each do |ss| %> 
     <%= link_to ss, class: 'span2 category-landing' do %> 
    <%= image_tag ss.image(:similar), class: 'img-polaroid', id: 'category-landing-list' %> 
    <p class="category-landing-list-name"><%= ss.name %></p> 
<% end %> 
<% end %> 

<%= link_to "View all #{@social_sciences.count} majors in this category.", category_path("social sciences"), class: "view-category-show-page" %> 

等。我试过@category = Major.tagged_with(params[:tag])和许多变化，无济于事。这是我第一次与acts_as_taggable_on一起工作，虽然我一遍又一遍地阅读了文档，但我无法弄清楚这一点。

我希望能够在整个应用程序中扩展这一点，所以我想在得到大量重复代码之前先弄明白。感谢您分享任何想法或建议！

我正在运行rails 3.2.11应用程序。

UPDATE
下面是如何更好，这是现在：
我categories_controller.rb文件：

def index 
    @major_categories = ["creative arts", "social sciences", "science", ....] 
end 

我index.html.erb页：

<% @major_categories.each do |c| %> 
    <!-- Title and blue strip --> 
    <div class="category-strip"> 
     <div class="container"> 
      <h2 class="major-categories-landing"><%= c %></h2> 
     </div> 
    </div> 

    <!-- Show Each Major in this Category --> 
    <div class="container"> 
     <div class="row-fluid"> 
      <% Major.tagged_with(c).order('RANDOM()').limit(10).each do |major| %> 
       <%= link_to major, class: 'span2 category-landing' do %> 
       <%= image_tag major.image(:similar), class: 'img-polaroid' %> 
       <p class="category-landing-list-name"><%= major.name %></p> 
       <% end %> 
      <% end %> 
     </div> 

     <!-- Link to View All Majors --> 
     <div class="row-fluid"> 
      <div class="view-all-category"> 
       <%= link_to "View all #{Major.tagged_with(c).count} majors in this category.", category_path(c), class: "view-category-show-page" %> 
      </div> 
     </div> 
    </div> 
<% end %> 

Answer 1

我会做这样的事情：

# in categories_controller.rb 
def index 
    @categories = ["creative arts", "engineering and technology", 
       "mechanics and construction", ...] 
end 

# in index.html.erb 
<%= render partial: "category", collection: @categories %> 

# in _category.html.erb 
<h2 class="major-categories-landing"><%= category.titleize %></h2> 

<% Major.tagged_with(category).order('rand()').limit(10).each do |major| %> 
    <%= link_to major, class: 'span2 category-landing' do %> 
    <%= image_tag major.image(:similar), class: 'img-polaroid', 
             id: 'category-landing-list' %> 
    <p class="category-landing-list-name"><%= major.name %></p> 
    <% end %> 
<% end %> 

<%= link_to "View all #{Major.tagged_with(category).count} majors in this category.", 
      category_path(category), class: "view-category-show-page" %> 

顺便说一句：每个专业的链接是无效的HTML。一个链接（因为a它是一个内联元素）不应该包含一个段落（因为p是一个box元素）。此外，每个类别的每个链接将具有相同的id，但id必须在每个html文档中都是唯一的。