Rails 中的respond_to 和respond_with 有什么区别? [英] What's the difference between respond_to and respond_with in Rails?

问题描述

当我向控制器发送数据时出现以下错误

When I'm sending data to my controller I'm getting the following error

带参数

{"title"=>"some",
 "user_id"=>"2",
 "task"=>{"title"=>"some"}}

为什么会这样?Rails 中的respond_to 和respond_with 有什么区别?

Why is that so? And what's the difference between respond_to and respond_with in Rails?

class TasksController < ApplicationController
  respond_to :json

  def create
    respond_with current_user.tasks.create(task_params)
  end

  private

  def task_params
    params.require(:task).permit(:id, :title, :due_date, :priority, :complete)
  end

end

当我使用 respond_to 时，它说 Undefined method upcase for Task

When I'm using respond_to it says Undefined method upcase for Task

推荐答案

它表示它无法识别您的响应格式.由于 respond_with current_user.tasks.create(task_params) 将生成 html 响应.

It's saying it doesn't recognize the format of your response. Since respond_with current_user.tasks.create(task_params) will generate a html response.

在你的 routes.rb 更改

In your routes.rb change

resources :tasks

到

resources :tasks, :defaults => {:format => "json"}

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