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我试图通过在页面上按下一个按钮来实现以下目标,用户可以从数据库中获取一个随机项目,该项目将被显示,但将具有可编辑的属性。我遇到的问题是以下我不知道如何传递随机 id(在数据库中有效),以在我的部分中呈现,但仍然能够更新特定属性。

标题中的问题:

  SyntaxError in Tasks#main
  Showing /home/bogdan/ex/bored/app/views/tasks/main.html.erb where line #1 raised:
/home/bogdan/ex/bored/app/views/tasks/main.html.erb:1: syntax error, unexpected ',', expecting ')'
...uffer.append=  form_for (:task, :url => {:action =>'rand_tas...
...                               ^
/home/bogdan/ex/bored/app/views/tasks/main.html.erb:1: syntax error, unexpected ')', expecting keyword_end
...url => {:action =>'rand_task'}) do |f|@output_buffer.safe_co...
...                               ^
../app/views/tasks/main.html.erb:8: syntax error, unexpected keyword_ensure, expecting $end 
Extracted source (around line #1):
1: <%= form_for (:task, :url => {:action =>'rand_task'}) do |f|%>
2:     <%= render(:partial => "rand_show", :locals => {:f => f}) %></p> 
3: <%end%>
4: 
Trace of template inclusion: app/views/tasks/main.html.erb

我试图将 rand_task 输出对象传递给 _rand_show.html.erb 并且 afterwartds 只为我感兴趣的 attr 调用一个新的可编辑表单id

形式:

<%= form_for(@task = Task.new) do |f| %>
  <div class="field">
    <%= f.label :name %><br />
    <%= f.text_field :name, :disabled=>true %>
  </div>
  <div class="field">
    <%= f.label :category %><br />
    <%= f.text_field :category, :disabled=>true %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

随机方法:

def rand_task
    if params[:id] == 'random'
      @task = Task.order('RANDOM()').first
    else
      @task = Task.order('RANDOM()').first // if not  i get a nill related error.
    end 
  end

请帮助我为什么会收到上述错误?我正在考虑的概念是错误的吗?

4

1 回答 1

2
<%= form_for (:task, :url => {:action =>'rand_task'}) do |f| %>
            ^

问题是 和 之间的form_for空间(。如果你删除它应该工作的空间。

于 2012-09-12T22:17:19.547 回答