Question

我需要根据注释的数量显示不同的文本，并将逻辑放在控制器中。但是在控制器中有一个很长的方法似乎不是很干，我应该把它放在哪里呢？

example_controller.rb：

def index
  .
  count_dependent_message
  .
end

def count_dependent_message
  case @user.comment.count
        when 0
          @strong = "example Strong 0"
          @paragraph = "example paragraph 0"
        when 1
          @strong = "Jon Smith is called Smith"
          @paragraph = "example paragraph 1"
        when 2...10
          @strong = "Once upon a time...Steve Jobs... "
          @paragraph = "example paragraph 2"
        when 11...40
          @strong = "Wow you have many counts"
          @paragraph = "example paragraph 3"

        else
          @strong = "exciting"
          @paragraph = "example paragraph 4"  
  end
end

视图：

<h3>
 <strong>
  <%= @strong %>
 </strong>
</h3>
<p>
<%= @paragraph %>
</p>

我已经考虑过把逻辑放在一个部分，但这似乎不是很有效，因为我想渲染的文字只是一个句子。

Answer 1

您可以将翻译方法添加到视图助手中。

def strong(comment_count)
   case ...
end

然后您的视图将如下所示：

<%= strong(@comment_count) %>

你的控制器看起来像：

@comment_count = @user.comments.count

这很好，因为控制器没有任何显示逻辑，视图也很短。

Answer 2

将视图代码移动到partial 例如_heading.html.erb

<h3>
 <strong><%= texts[:heading] %></strong>
</h3>
<p><%= texts[:text] %></p>

count_dependent_message方法应该是

    def count_dependent_message(count = nil)
      case count
      when 0
        { :heading => "example Strong 0", :text => "example paragraph 0" }
      when 1
        { :heading => "Jon Smith is called Smith", :text => "example paragraph 1" }
      when 2...10
        { :heading => "Once upon a time...Steve Jobs... ", :text => "example paragraph 2" }
      when 11...40
        { :heading => "Wow you have many counts", :text => "example paragraph 3" }
      else
        { :heading => "exciting", :text => "example paragraph 4" }
      end
    end

因此你可以打电话给

<%= render 'heading', :locals => { :texts => count_dependent_message(@user.comment.count) } %>

我在哪里放置显示逻辑（而不是控制器）？

2 个答案: