Question

创建新作业时，您将被重定向到显示页面（/ jobs / [：id]）。但是，当您尝试重新加载页面或编辑作业时，标题中会出现错误。有set_job，就我看来而言设置正确，并标记为错误。

这是一个控制器：

class JobsController < ApplicationController
  before_action :set_job, only: [:show, :edit, :update]
  before_action :authenticate_user!, except: [:show, :index]

  def index
    @jobs = Job.published.order('created_at DESC').paginate(:page => params[:page], :per_page => 20)
  end

  def show
  end

  def new
    @job = Job.new
  end

  def edit
  end

  def create
    @job = Job.new(job_params)

    respond_to do |format|
      if @job.save            
        format.html { redirect_to @job }
        format.json { render :show, status: :created, location: @job }
      else
        format.html { render :new }
        format.json { render json: @job.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    respond_to do |format|
      if @job.update(job_params)
        format.html { redirect_to @job }
        format.json { render :show, status: :ok, location: @job }
      else
        format.html { render :edit }
        format.json { render json: @job.errors, status: :unprocessable_entity }
      end
    end
  end


  private

    def set_job
      @job = Job.find(params[:id])
    end

    def job_params
      params.require(:job).permit(:name, :description, :image, :location, :deleted, :user_id, :tag_list)
    end

end

日志：

Job Load (0.3ms)  SELECT  "jobs".* FROM "jobs"  WHERE "jobs"."id" = $1 LIMIT 1  [["id", 3]]                                                                                         
Completed 404 Not Found in 74ms                                                                                                                                                       

ActiveRecord::RecordNotFound (Couldn't find Job with 'id'=3):                                                                                                                         
  app/controllers/jobs_controller.rb:56:in `set_job'

记录第2部分

Started POST "/jobs" for 188.246.77.192 at 2014-09-20 22:11:03 +0000                                                                                                                  
Processing by JobsController#create as HTML                                                                                                                                           
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"8gO/Q8ktERzKdMzDtB8KEU6CH8oIayNAb2AZhUzL2d0=", "job"=>{"name"=>"My first job", "description"=>"test", "tag_list"=>"rails, programmi
ng", "location"=>"Red River, United States", "user_id"=>"1"}, "_wysihtml5_mode"=>"1", "commit"=>"Submit"}                                                                             
  User Load (0.5ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1  ORDER BY "users"."id" ASC LIMIT 1                                                                        
   (0.2ms)  BEGIN                                                                                                                                                                     
  SQL (0.4ms)  UPDATE "users" SET "updated_at" = '2014-09-20 22:11:03.154670', "last_seen_at" = '2014-09-20 22:11:03.154670' WHERE "users"."id" = 1                                   
   (4.3ms)  COMMIT                                                                                                                                                                    
   (0.2ms)  BEGIN                                                                                                                                                                     
  User Load (0.5ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = $1 LIMIT 1  [["id", 1]]                                                                                     
   (0.3ms)  SELECT COUNT(*) FROM "jobs"  WHERE "jobs"."user_id" = $1 AND ("jobs"."created_at" BETWEEN '2014-09-20 00:00:00.000000' AND '2014-09-20 22:11:03.168092')  [["user_id", 1]]
  SQL (0.3ms)  INSERT INTO "jobs" ("created_at", "description", "location", "name", "tag_list", "updated_at", "user_id") VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING "id"  [["create
d_at", "2014-09-20 22:11:03.170612"], ["description", "test"], ["location", "Red River, United States"], ["name", "My first job"], ["tag_list", "rails, programming"], ["updated_at", 
"2014-09-20 22:11:03.170612"], ["user_id", 1]]                                                                                                                                        
   (3.0ms)  COMMIT                                                                                                                                                                    
Redirected to http://example.com/jobs/3                                                                                                                
Completed 302 Found in 27ms (ActiveRecord: 9.6ms)

Answer 1

<强>作业

最重要的是，您的数据库中没有Job id 3 - 修复它的方法将来自确定为什么这会填充。

具体而言，您可能会遇到save方法或database方法的问题。以下是我要解决的问题：

#app/controllers/jobs_controller.rb
class JobsController < AppicationController
   def new
      @job = Job.new
   end

   def create
      @job = Job.new job_params
      @job.save
   end

   private

   def job_params
      require(:job).permit(:x, :y, :z)
   end
end

您已经拥有了正确的控制器 - 因此问题可能与数据保存在数据库中的方式有关。这可能是您model或save机制本身的问题。

这是您的模型应该是什么样的：

#app/models/job.rb
class Job < ActiveRecord::Base
   belongs_to :user
end

#app/models/user.rn
class User < ActiveRecord::Base
   has_many :jobs
end

这将确保您的模型不会导致问题。可能存在与validations相关的其他问题 - 您应该在Job模型中注释掉任何验证，只是为了检查它是否正确提交

-

<强> DB

您应该进一步确保为db Job

设置正确的model

为此，您需要确保已完成以下操作：

$ rake db：migrate

当然，如果您之前已为模型创建了正确的迁移，那么这就是

最后，您可以使用job检查数据库中rails console记录的存在：

> $ rails c
> $ jobs = Job.all
> # -> all jobs outputted

通过这种方式，您可以查看记录的插入位置，从而可以了解您已保存的记录发生了什么

无法找到带有＆＃39; id＆＃39; = 3的工作

1 个答案: