Question

我与地点和事件有关系has_and_belongs_to_many。当我创建一个事件时，不要保存places参数，而是保存其他参数。但是，当我想编辑一个事件时，这不会保留参数。（图片）¿参数有什么问题，为什么不保存通货膨胀？感谢

活动模型

cla
		has_and_belongs_to_many :users 
		has_and_belongs_to_many :sponsors 
		has_and_belongs_to_many :category 
		has_and_belongs_to_many :places
    accepts_nested_attributes_for :places
    
end

放置模型

	has_and_belongs_to_many :events 	
		has_one :scores 
		has_and_belongs_to_many :categorys 
	
   accepts_nested_attributes_for :events

事件控制器

class EventsController < ApplicationController
  
  before_action :events_params, only: [:create, :edit]




  def index
  	@event = Event.all
  end

 def show
    @event = Event.find(get_event)

  end

  def new 
  	@event = Event.new
  end

def create
    @event = Event.new(events_params)

    if @event.save
      redirect_to events_path, notice: "Almacenado"
    else
      render "new", notice: "Danm"
    end
  end

def edit
    params_filtered = Event.find(events_params)
    @event = Event.find(get_event)
    if @event.update(params_filtered)
      redirect_to events_path
    else
      render 'new'
    end
  end

  def destroy
    @event = Event.find(get_event)
    @event.destroy
    redirect_to events_path
  end

  private
  def events_params
    params.require(:event).permit(:website,:city,:whybuy,:moendreinfo,:title,:description, :datestart, :dateend, :hourstart, :hourend, :price ,:avatar, :background, places_atributtes: []) 
  end

 def get_event
    @event = Event.find(params[:id])
  end




end

路线

Rails.application.routes.draw do
  
  root 'welcome#index'

  resources :places do
  resources :events
  end 

 resources :events
 get "events/:id" => "events#show"
 get "events/:id/edit" => "events#edit"
  
  devise_for :users, :controllers => { registrations: 'registrations' }

  devise_scope :users do
  get "profile_user/:id" => "users_profiles#profile_user"
  get "usersall" => "users_profiles#usersall"
  end

end

错误错误链接

i.stack.imgur.com/Snl2m.png

表格活动新

<html>
<head>
	
  	<title></title>
  </head>
  <body id="newevent">
  	<h3> Crear Evento </h3>
    <div  class="container-fluid">
        <div  class="row">
          <div class="col-xs-12 col-sm-12 col-md-12  ">

           
              <di>
                    <div id="divnewevent" >

                        <%=form_for @event do |eve|%>
                        	<%= eve.label :title, "Titulo del evento" %></br>
                          <%= eve.text_field :title,  class:"form-control", placeholder:"Stingi Fest Back Color", autofocus: true%></br>
                        	<%= eve.label :description, "Descripción" %></br>
                        	<%= eve.text_field :description,  class:"form-control", placeholder:"No debe superar los 140 caracteres", autofocus: true%></br>
                        	
                          <%= eve.collection_select(:place_ids, Place.all, :id, :name, {prompt: true}, {multiple: true, class: "input-lg"}) %>
                          
                          <%= eve.label :datestart, "Fecha de apertura" %></br>
                         	<%= eve.date_select :datestart, class:"form-control", placeholder:"Fecha de apertura o día del evento", autofocus: true %></br>

                        	<%= eve.label :dateend, "Fecha de cierre" %></br>
                        	<%= eve.date_select :dateend,  class:"form-control", placeholder:"Fecha de cierre o día del evento", autofocus: true %></br>
                        	<%= eve.label :hourstart, "Hora inicio" %></br>
                        	<%= eve.time_select :hourstart,  class:"form-control", placeholder:"Hora de inicio", autofocus: true %> </br>
                        	
                        	<%= eve.label :hourend, "Hora cierre" %></br>
                        	<%= eve.time_select :hourend, class:"form-control", placeholder:"Hora de cierre", autofocus: true %></br>

                          <%= eve.label :website, "website" %></br>
                          <%= eve.text_field :website, class:"form-control", placeholder:"www.cosito.com", autofocus: true  %></br>

                          <%= eve.label :city, "ciudad" %></br>
                          <%= eve.text_field :city, class:"form-control", placeholder:"Ciudad,co", autofocus: true %></br>

                          <%= eve.label :price, "Costo" %>
                          <%= eve.text_field :price, class:"form-control", placeholder:"Costo de entrada", autofocus: true %> </br>
                       
                          
                          <%= eve.label :whybuy, "Por qué asistir o comprar y dónde" %></br>
                          <%= eve.text_field :whybuy, class:"form-control", placeholder:"Plus de insentivo y donde comprar", autofocus: true %></br>
                          <%= eve.label :moreinfo, "más info" %></br>
                          <%= eve.text_field :moreinfo, class:"form-control", placeholder:"Mayor información", autofocus: true %></br>
                          <%= eve.label :avatar, "Foto de perfil" %>
                           <%= eve.file_field :avatar %>
                           <%= eve.label :background, "Foto de fondo" %>
                           <%= eve.file_field :background %>



                          <%= eve.submit %>
                         <%end%>

                            </div>                  
                   </div>
                
              </div>
            </div>
        </div>
    
  </body>
</html>

Answer 1

我的评论太低了。

请显示表格的视图。看起来好像这些参数不符合您的

params.require(:event)

编辑：

我认为你没有以正确的方式使用你的event_params，只有当你想检查给定的参数并寻找你允许的属性时才应该调用这个函数。

你应该删除

before_action :event_params

但是补充说：

before_action :get_event, except: [:new, :index, :create]

这将确保您在show, update, destroy之前的@ event-variable中设置当前事件。

我认为您的罪魁祸首可能是您没有update - 方法，您也可以在edit - 方法中执行此操作。

edit是加载您可以编辑活动的页面的操作。 update是您从表单发送的操作。您可以在此处使用@event.update(...)。

因此，edit和update可能如下所示：

def edit
end

def update
  if @event.update(event_params)
    redirect_to @event, notice: 'Event was updated'
  else
    render action: :edit
  end
end

（如果您添加了before_action :get_event）。

Param丢失或值为空不要参数，只是id

1 个答案: