Question

我遇到了创建对象的问题。 New-function工作正常，但是当我将对象传递给Create时，会抛出以下错误。我想在ServiceProvider存在时添加服务。每个用户都可以为自己创建一个ServiceProvider。 ServiceProvider可以提供一些服务。我还在MIgration文件中设置了services-table的外键＆＃34; add_foreign_key：services，：service_provider＆＃34; 我不知道为什么service_provider_id没有被转移。

错误输出

    ActiveRecord::RecordNotFound in ServicesController#create
    Couldn't find ServiceProvider with 'id'=
    Extracted source (around line #55):

      private
        def current_service_provider
Line 55:          @current_service_provider = ServiceProvider.find(params[:id])
      end


Parameters:        
{"utf8"=>"✓",
         "authenticity_token"=>"Z4s/ZzbbMmcXA1jAyFnEZZ/8RhS2ZO/UdI6xN5QkKQwXmJJOOo/PVsSdOUcuJvVpFJdaUi/rMtNJq5sAEdz89g==",
         "service"=>{"name"=>"dsfg", "address"=>"asdf", "radius"=>"64655", "price"=>"45", "descr"=>"sdfagasrfsdgh"},
         "commit"=>"Speichern"}

模型

class ServiceProvider < ApplicationRecord
  belongs_to :user
  has_many :services

  validates :name, presence: true
  validates :street, presence: true
  validates :plz, presence: true
  validates :location, presence: true
  validates :user_id, presence: true

end
class Service < ApplicationRecord
  belongs_to :service_provider
  has_many :service_photos

  validates :name, presence: true, length: {maximum: 50}
  validates :address, presence: true
  validates :price, presence: true
end

ServicesController

class ServicesController < ApplicationController
  before_action :set_service, only: [:show, :edit, :update]
  before_action :authenticate_user!, except: [:show]

  def index
    @service = current_user.services
  end

  def show
    @service_photos = @service.service_photos
  end

  def new
    @service = Service.new
  end

  def create
    @service = current_service_provider.services.build(service_params)
    if @service.save
      if params[:images]
        params[:images].each do |image|
          service.service_photos.create(image: image)
        end
      end
      @service_photos = @service.service_photos
      redirect_to edit_service_path(@service), notice: "Gespeichert"
    else
      render :new
    end
  end

  def edit
  end

  def update
  end

  private
    def current_service_provider
      @current_service_provider = ServiceProvider.find(params[:id])
    end

    def set_service
      @service = Service.find(params[:id])
    end

    def service_params
      params.require(:service).permit(:name, :address, :radius, :price, :descr)
    end
end

表格

<div class="panel panel-default">
  <div class="panel-heading">
    Erstelle deinen Service
  </div>
  <div class="panel-body">
    <div class="container">
        <%= form_for @service, html: {multipart: true} do |f| %>
          <div class="row">
              <div class="form-group">
              <label>Service Name</label>
              <%= f.text_field :name, placeholder: "Servicename", class: "form-control" %>
            </div>
          </div>
          <div class="row">
              <div class="form-group">
              <label>Adresse</label>
              <%= f.text_field :address, placeholder: "Adresse", class: "form-control" %>
            </div>
          </div>
          <div class="row">
              <div class="form-group">
              <label>Radius</label>
              <%= f.text_field :radius, placeholder: "Radius", class: "form-control" %>
            </div>
          </div>
          <div class="row">
              <div class="form-group">
              <label>Preis</label>
              <%= f.text_field :price, placeholder: "Preis", class: "form-control" %>
            </div>
          </div>
          <div class="row">
              <div class="form-group">
              <label>Beschreibung</label>
              <%= f.text_area :descr, rows: 5, placeholder: "Beschreibung", class: "form-control" %>
            </div>
          </div>

          <div class="rows">
            <div class="col-md-4">
              <div-form-group>
                <span class="btn btn-default btn-file">
                  <i class="fa fa-cloud-upload fa-lg"></i>Fotos hochladen
                  <%= file_field_tag "images[]", type: :file, multiple: true %>
                </span>
              </div-form-group>
            </div>
          </div>

          <div id="photos"><%= render 'service_photos/list' %></div>

          <div class="actions">
            <%= f.submit "Speichern", class: "btn btn-primary" %>
          </div>
        <% end %>
    </div>
  </div>
</div>

Answer 1

在＆＃34;创建＆＃34;您尝试查找不存在的对象的操作。你可以通过“id”找到对象。保存之后。在你的情况下，当＆＃34; current_service_provider＆＃34;时，params [：id]不存在方法正在呼唤。

ActiveRecord :: RecordNotFound无法找到带有＆＃39; id＆＃39; =的ServiceProvider

1 个答案: