Rails的錯誤有一個值

Question

Mysql2::Error: Field 'USER_NAME' doesn't have a default value: INSERT INTO `dashboard_user` VALUES() 

我得到當我試圖打開我的網頁http//127.0.0.1:3000/my/user_creation

有人可以幫助這個這個錯誤？

下面

是模型

class CreateDashboardUsers < ActiveRecord::Migration 
    def change 
    create_table "dashboard_user", primary_key: "USER_ID", force: true do |t| 
    t.string "USER_NAME",   limit: 50, null: false 
    t.string "NORMALIZED_USER_NAME", limit: 50 
    t.string "PASSWORD",    limit: 50 
    t.string "LAST_NAME",   limit: 50 
    t.string "FIRST_NAME",   limit: 50 
    t.string "MIDDLE_NAME",   limit: 50 
    t.string "PHONE",    limit: 15 
    t.string "EMAIL_ID",    limit: 100 
    t.integer "SEQ_QUES_ID" 
    t.string "SEQ_QUES_ANSWER",  limit: 100 
    t.string "EXPIRE_PASSWORD_IND", limit: 1 
    t.date  "EXPIRE_PASSWORD_DATE" 
    t.string "DEACTIVATED_IND",  limit: 1 
    t.date  "DEACTIVATED_DATE" 
    t.integer "ROLE_ID" 
    t.string "CREATED_BY",   limit: 50 
    t.datetime "CREATED_DATE" 
    t.string "UPDATED_BY",   limit: 50 
    t.datetime "UPDATED_DATE" 
    end 
    end 
end 

控制器代碼低於

class AdminController < ApplicationController 
     def user_creation 
     DashboardUser.create(:USER_NAME => params[:username]) 
     DashboardUser.create(:PASSWORD => params[:password]) 
     DashboardUser.create(:LAST_NAME => params[:lastname]) 
     DashboardUser.create(:FIRST_NAME => params[:firstname]) 
     DashboardUser.create(:MIDDLE_NAME => params[:middlename]) 
     DashboardUser.create(:PHONE => params[:phone]) 
     redirect_to :action => 'user_creation' 
     end 
     private 
     def dashboard_params 
     params.require(:dashboard_user).permit(:id, :user_name, :password, :last_name, :first_name, :middle_name , :phone) 
     end 

end 

Mysql2 ::錯誤：字段 'USER_NAME' 不具有默認值：INSERT INTO dashboard_user VALUES（）此是我在瀏覽器中運行它時得到的結果

dashboard_user

class DashboardUser < ActiveRecord::Base 
    self.table_name = "dashboard_user" 
end 

Answer 1

這不是你如何創建一個ActiveRecord :: Base對象。有關信息，請參閱http://guides.rubyonrails.org/active_record_basics.html#create。

看看是否有效。

DashboardUser.create(
    :USER_NAME => params[:username], 
    :PASSWORD => params[:password], 
    :LAST_NAME => params[:lastname], 
    :FIRST_NAME => params[:firstname], 
    :MIDDLE_NAME => params[:middlename], 
    :PHONE => params[:phone] 
) 

（P.S這將是更好的，你做這個別的之前閱讀的基礎！）