ActionController的:: UnknownFormat [英] ActionController::UnknownFormat

问题描述

在我的Rails应用我有一个AJAX请求到服务器，存储一些数据。这种使用没有任何问题的工作，但现在我得到一个错误：

 的ActionController :: UnknownFormat（ActionController的:: UnknownFormat）：
  应用程序/控制器/ reservations_controller.rb：45：在'创造'
 

由于以下是控制器和我的JavaScript文件，其中我宣布的数据类型确实是JSON

 类ReservationController＆LT;的ApplicationController

  respond_to代码：HTML，：JSON

  DEF创建
    ...
    respond_to代码做|格式|
      如果@ reservation.save
        的format.html做
          redirect_to时'/'
        结束
        format.json {渲染JSON：@ reservation.to_json}
      其他
        使新
      结束
    结束＃的respond_to
  结束＃创建
结束＃ReservationController
 

function.js

  $。阿贾克斯（{
        网址：URL_LINK，
        数据类型：JSON，
        键入：POST，
        数据：dataToSend
      }）
 

完整的错误日志：

 已完成406不可接受的45ms

ActionController的:: UnknownFormat（ActionController的:: UnknownFormat）：
应用程序/控制器/ bookings_controller.rb：45：在'创造'

渲染/Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_source.erb （0.5毫秒）
渲染/Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.erb （为0.8ms）
渲染/Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb （为0.8ms）
渲染/Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb救援内/布局（9.6ms）
 

解决方案

更​​新创建如下操作：

 高清创建
  ...
  respond_to代码做|格式|
    如果@ reservation.save
      的format.html做
        redirect_to时'/'
      结束
      format.json {渲染JSON：@ reservation.to_json}
    其他
      的format.html {呈现'新'} ##指定要在其中呈现的格式为新页面
      format.json {渲染JSON：@ reservation.errors} ##，您可能需要指定一个JSON格式以及
    结束
  结束
结束
 

正在使用的respond_to 的方法，但没有指定格式，其中新页面的呈现方式。因此，误差的ActionController :: UnknownFormat 。

In my rails app I have a ajax request to the server, to store some data. This used to work without any problem, but now I get an error:

ActionController::UnknownFormat (ActionController::UnknownFormat):
  app/controllers/reservations_controller.rb:45:in `create'

As following is the controller and my javascript file where I declare the datatype do be JSON

class ReservationController < ApplicationController

  respond_to :html, :json

  def create
    ...
    respond_to do |format|
      if @reservation.save
        format.html do
          redirect_to '/'
        end
        format.json { render json: @reservation.to_json }
      else
        render 'new'
      end
    end # respond_to
  end # create 
end # ReservationController

function.js

$.ajax({
        url: url_link,
        dataType: 'json',
        type: 'POST',
        data: dataToSend
      })

The complete error log is:

Completed 406 Not Acceptable in 45ms

ActionController::UnknownFormat (ActionController::UnknownFormat):
app/controllers/bookings_controller.rb:45:in `create'

Rendered /Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.5ms)
Rendered /Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.8ms)
Rendered /Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.8ms)
Rendered /Users/tiagovieira/.rvm/gems/ruby-2.0.0-p451/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (9.6ms)

解决方案

Update the create action as below:

def create
  ...
  respond_to do |format|
    if @reservation.save
      format.html do
        redirect_to '/'
      end
      format.json { render json: @reservation.to_json }
    else
      format.html { render 'new'} ## Specify the format in which you are rendering "new" page
      format.json { render json: @reservation.errors } ## You might want to specify a json format as well
    end
  end
end

You are using respond_to method but are not specifying the format in which a new page is rendered. Hence, the error ActionController::UnknownFormat .

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