在我的 Rails 应用程序中，我有一个向服务器发出的 ajax 请求，用于存储一些数据。这曾经工作没有任何问题，但现在我收到一个错误：
ActionController::UnknownFormat (ActionController::UnknownFormat):
app/controllers/reservations_controller.rb:45:in `create'
如下是控制器和我的 javascript 文件，我在其中声明数据类型为 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
函数.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)
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方法但未指定format其中一个new页面已呈现。因此，错误ActionController::UnknownFormat .
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