Question

这是我得到的错误：

No route matches [POST] "/specials/1"

我知道它无法生成后期路线，或者无法使用。

这是我的观点/表格代码：

  <%= form_for(:special, :url => {:action => 'update', :id => @special.id}) do |f| %>

    <table class="table table-responsive table-striped table-condensed table-hover" summary="Special form fields">
      <tr>
        <th>Order</th>
        <td><%= f.text_field :order, class: "form-control" %></td>
      </tr>
      <tr>
        <th>Name</th>
        <td><%= f.text_field :name, class: "form-control" %></td>
      </tr>
      <tr>
        <th>Description</th>
        <td><%= f.text_field :description, class: "form-control" %></td>
      </tr>
      <tr>
        <th>Fine Print</th>
        <td><%= f.text_field :fine_print, class: "form-control" %></td>
      </tr>
      <tr>
        <th>Active</th>
        <td><%= f.text_field :active, class: "form-control" %></td>
      </tr>
    </table>

    <div class="form-buttons">
      <%= submit_tag("Update Special") %>
    </div>

  <% end %>

Heres是我的控制器代码：

class SpecialsController＆lt; ApplicationController中

  def index
    @specials = Special.sorted
  end

  def show
    @special = Special.find(params[:id])
  end

  def new
    @special = Special.new
  end

  def create
    #Instantiation of object using form parameters
    @special = Special.new(special_params)
    #Save the object
    if @special.save
      #If success, redirect to index action
      redirect_to(:action => 'index')
    else
      # Redisplay the form so user can fix problems
      render('new')
    end
  end

  def edit
    @special = Special.find(params[:id])
  end

  def update
    #Find an existing object using form parameters
    @special = Special.find(params[:id])
    #Update the object
    if @special.update_attributes(special_params)
      #If succeeds, redirect to index action
      redirect_to(:action => 'show', :id => @special.id)
    else
      # If update fails, redisplay the form so user can fix problems
      render('edit')
    end
  end

  def delete
  end

private
  def special_params
    params.require(:special).permit(:name, :description, :fine_print, :active, :order)
  end

end

我注意到有一条更新路径：

PATCH   /specials/:id(.:format) specials#update

我无法弄清楚为什么没有应用邮政路线。它正在寻找合适的@special实例，但它似乎没有可用的路由。有什么建议吗？

Answer 1

通常在更新记录时，我们会对路径进行补丁请求。您的表单应如下所示：

Filters.good

Rails将根据<%= form_for(@special) do |f| %>已保留到数据库的事实确定正确的路由PATCH /specials/:id。

如果您决定在@special视图中将此相同的表单用作部分表单，请务必将其添加到您的控制器中：

new

无论您是def new @special = Special.new end路线还是new路线，edit始终会有一个@special对象来推断是否要form_for 1}}或PATCH /specials

Rails：没有路由匹配[POST]“/ specials / 1”

1 个答案: