Question

使用嵌套模型的2.3.x + rails功能，我认为我需要访问表单生成器实例才能正确地指定部分以呈现嵌套模型。从复杂形式示例中拉出来：

例如，这是一个封闭表单，用于创建表单构建器并将其传递给嵌套模型呈现视图：

<div class="children_fields tasks" id="<%= dom_id(f.object) %>_tasks"  
   data-context="<%= f.object_name %>">
  <% f.fields_for :tasks do |task_form| %>
    <%= render :partial => 'task', :locals => { :f => task_form } %>
  <% end %>    
</div>

任务部分是：

<%= f.label :name, "Task" %>
<%= f.text_field :name %>
<%= remove_child_link "remove", '#', f %>
<div class="children_fields assignments" id="<%= dom_id(f.object) %>_assignments"  
     data-context="<%= f.object_name %>">
  <% f.fields_for :assignments do |assignment_form| %>
    <%= render :partial => 'assignment', :locals => { :f => assignment_form } %>
  <% end %>
</div>

当我尝试像这样指定一个部分时，我尝试通过执行以下操作来捕获表单构建器作为实例var：

before(:each) do
  ... # setup for target object
  form_for [:foo, :bar, @project] do |f|
    @f = f
  end
end

这会对使用form_for

产生错误

undefined method `polymorphic_path' for #<Spec::Rails::Example::ViewExampleGroup::Subclass_1:0x2cfeafc>
/Users/adamaig/.rvm/gems/ruby/1.8.7/gems/actionpack-2.3.5/lib/action_controller/test_process.rb:511:in `method_missing'
/Users/adamaig/.rvm/gems/ruby/1.8.7/gems/actionpack-2.3.5/lib/action_view/helpers/form_helper.rb:298:in `apply_form_for_options!'
/Users/adamaig/.rvm/gems/ruby/1.8.7/gems/actionpack-2.3.5/lib/action_view/helpers/form_helper.rb:272:in `form_for'

那么，正确的方法是： 1）获取这样的规格的FormBuilder实例？ 2）spec嵌套模型及其视图形式？

这对于正确的名称生成很重要。

Answer 1

解决方案是：

describe 'tasks/_form' do
  attr_accessor :output_buffer

  before do
    task = mock_model(Task, :mumbo_jumbo => 'foo bar')
    @output_buffer = ''
    form_for(task, :url => task_path(task)) do |f|
      @f = f
    end
  end

  it 'should have input mumbo_jumbo' do
    render_partial_with_locals
    response.should have_tag('input[name=?]', 'task[mumbo_jumbo]')
  end

  private

    def render_partial_with_locals
      render :partial => 'tasks/form', :locals => {:f => @f}
    end

    def protect_against_forgery?
      false
    end
end

测试（rspec）在rails 2.3+中嵌套的模型部分

1 个答案: