ActionController::UnknownFormat [英] ActionController::UnknownFormat

问题描述

在我的 rails 应用程序中，我向服务器发送了一个 ajax 请求，用于存储一些数据.这曾经可以正常工作，但现在出现错误:

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'

以下是我声明数据类型为 JSON 的控制器和我的 javascript 文件

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

function.js

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

完整的错误日志是:

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)

推荐答案

更新create动作如下:

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

您正在使用 respond_to 方法，但没有指定呈现 new 页面的格式.因此，错误 ActionController::UnknownFormat .

You are using respond_to method but anot specifying the format in which a new page is rendered. Hence, the error ActionController::UnknownFormat .

这篇关于ActionController::UnknownFormat的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！