无法将我的数据保存到sqlite数据库

我试图使用ROR实现停车许可证申请页面。我无法将我的数据保存到数据库中。许可证数据库也与用户相关联。该程序不会保存数据并执行else语句。没有错误产生，我想我错过了一些东西，但我不知道确切的问题。任何帮助表示赞赏！无法将我的数据保存到sqlite数据库

Permit_controller.rb

class PermitsController < ApplicationController 
    before_action :set_permit, only: [:show, :destroy] 
    def index 
    @permits = Permit.all 
    end 

    def new 
    @permits = Permit.new 
    end 

    def create 
    @permits = Permit.new(permit_params) 
    if @permits.save 
     redirect_to root_path 
    else 
     redirect_to contact_path 
    end 
    end 

    def destroy 
    end 

    def show 
    @permits = Permit.find(params[:id]) 
    end 
    private 
    # Use callbacks to share common setup or constraints between actions. 
    def set_permit 
    @permits = Permit.find(params[:id]) 
    end 

    # Never trust parameters from the scary internet, only allow the white list through. 
    def permit_params 
    params.require(:permit).permit(:vehicle_type, :name, :studentid, :department, :carplate,:permitstart, :permitend) 
    end 
end

Permit.rb

class Permit < ApplicationRecord 
    belongs_to :user 
end

Create_permit.rb

class CreatePermits < ActiveRecord::Migration[5.0] 
    def change 
    create_table :permits do |t| 
     t.string :vehicle_type 
     t.string :name 
     t.string :studentid 
     t.string :department 
     t.string :carplate 
     t.date :permitstart 
     t.date :permitend 
     t.references :user, foreign_key: true 

     t.timestamps 
    end 
    add_foreign_key :permits, :user 
    add_index :permits, [:user_id, :created_at] 
    end 
end

User.rb

class User < ApplicationRecord 
     has_secure_password 
     has_many :permits 
    end 

    #book pg 264 Validation 

permit/new.html.erb 
<% provide(:title, 'New Permit') %> 
<h1>Permit Application</h1> 

<div class="row"> 
    <div class="col-md-6 col-md-offset-3"> 
    <%= form_for(@permits) do |f| %> 

     <%= f.label :"Vehicle" %> 
     <%= f.text_field :vehicle_type, class: 'form-control' %> 

     <%= f.label :"License Plate" %> 
     <%= f.text_field :carplate, class: 'form-control' %> 

     <%= f.label :"Student ID" %> 
     <%= f.text_field :studentid, class: 'form-control' %> 

     <%= f.label :name %> 
     <%= f.text_field :name, class: 'form-control' %> 

     <%= f.label :"Department of applicant" %> 
     <%= f.text_field :department, class: 'form-control' %> 

     <%= f.label :permit_start %> 
     <%= f.date_select :permitstart, class: 'form-control' %> 

     <%= f.label :permit_end %> 
     <%= f.date_select :permitend, class: 'form-control' %> 


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

schema.rb

ActiveRecord::Schema.define(version: 20160921071908) do 


    create_table "permits", force: :cascade do |t| 
    t.string "vehicle_type" 
    t.string "name" 
    t.string "studentid" 
    t.string "department" 
    t.string "carplate" 
    t.date  "permitstart" 
    t.date  "permitend" 
    t.integer "user_id" 
    t.datetime "created_at", null: false 
    t.datetime "updated_at", null: false 
    t.index ["user_id"], name: "index_permits_on_user_id" 
    end 

    create_table "users", force: :cascade do |t| 
    t.string "name" 
    t.string "email" 
    t.datetime "created_at",  null: false 
    t.datetime "updated_at",  null: false 
    t.string "password_digest" 
    t.integer "user_type" 
    end

末

来源

2016-09-21 Gary Vlc

当您尝试创建许可证时，您的'log/development.log'中是否有任何日志条目？ – spickermann

根据代码，许可证表格应该保存在没有用户的情况下，因为你不需要在表格中的任何地方绑定用户，当你点击提交按钮时粘贴日志 –

是的，从日志中的主要东西是直接我到contact.html这是ELSE语句 –

检查与此@permits.save!。它显示确切的错误。

来源

2016-09-21 08:03:32

当我将其更改为@ permit.save！时，它在PermitsController中显示ActiveRecord :: RecordInvalid＃创建验证失败：用户必须存在 –

您是否有'user_id'验证？你是否从登录用户的页面执行此操作？ – tworitdash

我没有任何这验证，是的我设置用户必须登录第一 –

module ApplicationHelper 
    #for current user to use through out the app 
     def current_user 
       @current_user ||= session[:current_user_id] && User.find_by_id(session[:current_user_id]) # Use find_by_id to get nil instead of an error if user doesn't exist 
       end 
end

和

def create 
     @permits = Permit.new(permit_params) 
     @permits.user = current_user 
     if @permits.save 
      redirect_to root_path 
     else 
      redirect_to contact_path 
     end 
     end

测试

来源

2016-09-21 09:47:51

或者你也可以说，一个许可证有一个单一的用户，避免混淆。

#models/permit.rb 
class Permit < ApplicationRecord 
    has_one :user 
end 

#controllers/permit_controller.rb 
def create 
    @user = User.find(session[:user_id]) #use your session variable 
    @permits = Permit.new(permit_params) 

    if @permits.save 
     @user.permits << @permits 
     redirect_to root_path 
    else 
     redirect_to contact_path 
    end 
end

它将保存登录用户的许可证。

来源

2016-09-21 16:04:42 tworitdash

无法将我的数据保存到sqlite数据库

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