angularjs循环对象属性实现动态列的思路详解

angularjs循环对象属性实现动态列

优点：保存对象，在数据库只保存一条数据

缺点：添加对象属性需要修改表结构、代码，然后重新重新发布

实现思路

1）数据库创建表（对象）、创建字段（对象属性）

2）根据表（对象）、字段（对象属性）生成配置表

3）根据表（对象）、字段（对象属性）生成三层架构

4）demo代码如下

1.接口代码：

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using WebApplication1.Models;
 
namespace WebApplication1.Controllers
{
    public class HomeController : Controller
    {
        public IActionResult Index(string objecttype)
        {
            ViewBag.objecttype = objecttype;
            return View();
        }
        [HttpPost]
        public JsonResult GetItem(string objecttype)
        {
            if (objecttype == "student")
            {
                Student item = new Student
                {
                    no = "S001",
                    name = "张三",
                    gender = "男",
                };
                List columns = new List();
                columns.Add(new Column { columnname = "no", displaynname="学号" });
                columns.Add(new Column { columnname = "name", displaynname = "姓名" });
                columns.Add(new Column { columnname = "gender", displaynname = "性别" });
                return Json(new { code = "1", msg = "", item = item, columns = columns });
            }
            else
            {
                School item = new School
                {
                    no = "S001",
                    name = "浙江大学",
                    address = "浙江",
                };
                List columns = new List();
                columns.Add(new Column { columnname = "no", displaynname = "编码" });
                columns.Add(new Column { columnname = "name", displaynname = "名称" });
                columns.Add(new Column { columnname = "address", displaynname = "地址" });
                return Json(new { code = "1", msg = "", item = item, columns = columns });
            }
        }
 
        [HttpPost]
        public JsonResult SaveItem(string objecttype, string itemstring)
        {
            if (objecttype == "student")
            {
                Student item = JsonConvert.DeserializeObject(itemstring);
            }
            else
            {
                School item = JsonConvert.DeserializeObject(itemstring);
            }
            return Json(new { ResultCode = "1", ResultMessage = "保存成功！" });
        }
    }
    public class Student
    {
        public string no { get; set; }
        public string name { get; set; }
        public string gender { get; set; }
    }
    public class School
    {
        public string no { get; set; }
        public string name { get; set; }
        public string address { get; set; }
    }
    public class Column
    { 
        public string columnname { get; set; }
        public string displaynname { get; set; }
    }
}

2.angularjs前端代码

@{
    ViewData["Title"] = "Home Page";
}
 


    

        

            {{column.displaynname}}
            
        
    
    

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