Question

我不太明白为什么这不起作用。不知怎的，我的服务ID根本没有通过。我认为我对ID感到困惑，但这应该有效，但不是。当我点击提交时，它会告诉我：找不到具有＆＃39; id＆＃39; =

的服务

这是我的代码：

enquires_controller.rb

class EnquiresController < ApplicationController
  before_action :set_enquire, only: [:create, :new]

  def new
    @enquire = Enquire.new
  end

  def create
    @enquire = Enquire.new(enquire_params)
    @enquire.service = @service
    if user_signed_in?
      @user = current_user
    end
    if @enquire.save
      flash[:thanks] = "Thank you"
      redirect_to service_path(@service)
    else
      render :new
    end
  end

  private

  def set_enquire
    @service = Service.find(params[:service_id])
  end

  def enquire_params
    params.require(:enquire).permit(:first_name, :last_name, :company, 
                                    :message, :email, :phone_number, 
                                    :service_id )
  end

enquire.rb

class Enquire < ApplicationRecord
  belongs_to :service
  validates :first_name, presence: true
  validates :last_name, presence: true
  validates :company, presence: true
  validates :message, presence: true
  validates :email, presence: true
  validates :service_id, presence: true
end

使用@service的服务视图
show.html.erb

<%= link_to 'Enquire about this Service', new_enquire_path(@service), 
class: "btn btn-primary enquire-btn text-middle" %>

service.rb

has_many :enquires, :dependent => :destroy

的routes.rb

resources :services do
  resources :enquires, only: [ :new, :create ]
end

resources :enquires, only: [ :new, :create, :index, :show, :destroy ]

并最后查询表格 _form.html.erb

<%= simple_form_for(@enquire) do |f| %>
  <% if user_signed_in? %>
    <div class="form-inputs" id="session-form">
      <%= f.input :first_name, as: "hidden", input_html: { value: @user.first_name } %>
      <%= f.input :last_name, as: "hidden", input_html: { value: @user.last_name } %>
      <%= f.input :email, as: "hidden", input_html: { value: @user.email } %>
      <%= f.input :company, as: "hidden", input_html: { value: @user.company_name } %>
      <%= f.input :phone_number, autofocus: true, placeholder: "Phone Number", label:false %>
      <%= f.input :message, autofocus: true, :input_html => { id: "no-resize" }, placeholder: "Message", label:false %>
    </div>
  <% else %>
    <div class="form-inputs" id="session-form">
      <%= f.input :first_name, required: true, autofocus: true, placeholder: "First Name", label:false %>
      <%= f.input :last_name, required: true, autofocus: true, placeholder: "Last Name", label:false %>
      <%= f.input :email, required: true, autofocus: true, placeholder: "Email", label:false %>
      <%= f.input :company, required: true, autofocus: true, placeholder: "Company", label:false %>
      <%= f.input :phone_number, autofocus: true, placeholder: "Phone Number", label:false %>
      <%= f.input :message, autofocus: true, :input_html => { id: "no-resize" }, placeholder: "Message", label:false %>
    </div>
  <% end %>

  <div class="row">
    <div class="col-xs-12">
      <div class="form-actions text-center">
        <%= f.button :submit, "Submit Enquiry", class: "gen-create-btn" %>
      </div>
    </div>
  </div>
<% end %>

点击提交时我得到的参数是：

＆＃34;✓＆＃34;，＆＃34; authenticity_token＆＃34; =＆GT;＆＃34; xcqR44gPOI7gsN47ddnqKxKuTcaB1Pi5goLa5H81oecbDD7nxE / A1J4KR7rY0Dbyndgz6BrFKzukkTbOCjoGMg ==＆＃34;，＆＃34;查询＆＃34; =＆GT; { ＆＃34; first_name＆＃34; =＆gt;＆＃34; daadadad＆＃34;，＆＃34; last_name＆＃34; =＆gt;＆＃34; adadada＆＃34;，＆＃34; email＆＃34; =＆gt; ;＆＃34; dadad＆＃34;，＆＃34;公司＆＃34; =＆gt;＆＃34; adada＆＃34;，＆＃34; phone_number＆＃34; =＆gt;＆＃34; dadad＆＃34;，＆＃34;消息＆＃34; =＆gt;＆＃34; adada＆＃34;}，＆＃34;提交＆＃34; =＆gt;＆＃34;提交查询＆＃34;，＆＃34;控制器＆＃34; =＆gt;＆＃34;查询＆＃34;，＆＃34;操作＆＃34; =＆gt;＆＃34;创建＆＃34;}允许：false＆gt;

编辑：

也许服务展示方法与它有关？ services_controller.rb

def show
  @service = Service.find(params[:id])
  @user = current_user  
end

Answer 1

您before_action :set_enquire, only: [:create, :new]和[{1}}方法会调用new。

create

当您查看def set_enquire @service = Service.find(params[:service_id]) end方法的params时，没有create，因此service_id为params[service_id]。所以它失败了nil

<强>解决方案：

删除Couldn't find Service with 'id'=方法的before_action

create

并且before_action :set_enquire, only: [:new]在<{1}}方法中可用，请将@service作为new

从表单发送

service_id

在hidden_field方法中，添加以下行

<%= f.hidden_filed :service_id, @service %>

或者

除了create之外，我还可以看到@service = Service.find(params[:enquire][:service_id])和resources :enquires还有嵌套资源，因此您可以使用表格中的那些以下

services

注意：

在您定义enquires而不是<%= simple_form_for [@service, @enquire] do |f| %>
时，请将set_enquire更改为set_service
<强>更新

您还应该更改

service

到

enquiry

所以<%= link_to 'Enquire about this Service', new_enquire_path(@service), class: "btn btn-primary enquire-btn text-middle" %>正确传递。

Answer 2

我认为你的问题来自于你的routes.rb中查询资源的两条路线，如果你的对象来自第二个资源：查询它会产生一个错误，因为它无法找到＆＃34;父母＆＃34;服务的路线。

resources :services do
  resources :enquires, only: [ :new, :create ]
end

resources :enquires, only: [ :new, :create, :index, :show, :destroy ]

无法找到＆＃39; Model＆＃39;使用＆＃39; id＆＃39; =

2 个答案: