具有实体框架的CRUD WEB API

Posted 2023-01-05

我开始开发我的项目-使用数据库的Web应用程序。我将WEB API与实体框架一起使用我需要在项目中实现CRUD操作。

阅读-工作正常

但是我不知道如何实现创建，更新，删除；我没有足够的经验，很高兴您的建议。

我尝试使用存储库模式和结构模式来实现我的应用程序的良好体系结构。如果您对我的项目的体系结构有任何建议，我将不胜感激。

我不知道如何在价值控制者和资源库中实现它，请您帮忙吗？

附上我的代码：

存储库

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WebAPI

    public class CustomerRepository
    
        public IQueryable<Customer> GetAllCustomers()
        
            DevelopersEntities dev = new DevelopersEntities();
            return dev.Customers;
        

        public IQueryable<Customer> GetAllCustomers(int id)
        
            DevelopersEntities dev = new DevelopersEntities();
            return dev.Customers.Where(c=>c.Id==id).Select(e=>e);
        

        public IQueryable<Customer> DeleteCustomer(int id)
        
            DevelopersEntities dev = new DevelopersEntities();
            return dev.Customers.Remove(id);
        

        public IQueryable<Customer> CreateCustomer()
        
            DevelopersEntities dev = new DevelopersEntities();


        

        public IQueryable<Customer> UpdateCustomer(int id)
        
            DevelopersEntities dev = new DevelopersEntities();

        
    

客户模型

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using WebAPI;

namespace DevelopersWeb.Models

    public class CustomerModel
    
        public int CustomerId  get; set; 
        public string CustomerName  get; set; 

        public IEnumerable<HardwareModel> Hardware  get; set; 
        public IEnumerable<SoftwareModel> Software  get; set; 
    

硬件模型

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace DevelopersWeb.Models

    public class HardwareModel
    
        public int HardwareId  get; set; 
        public string HardwareName  get; set; 

    

软件模型

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace DevelopersWeb.Models

    public class SoftwareModel
    
        public int SoftwareId  get; set; 
        public string SoftwareName  get; set; 
    

模型工厂

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using WebAPI;

namespace DevelopersWeb.Models

    public class ModelFactory
    
        public CustomerModel Create(Customer customer)
        
            return new CustomerModel()
            
                CustomerId = customer.Id,
                CustomerName = customer.Name,

                Hardware = customer.HardWares.Select(h=>Create(h)),
                Software = customer.Softwares.Select(c=>Create(c))
            ;
        

        public HardwareModel Create(HardWare hardware)
        
            return new HardwareModel()
            
                HardwareId = hardware.HardWareId,
                HardwareName = hardware.HardWareName,
            ;
        

        public SoftwareModel Create(Software software)
        
            return new SoftwareModel()
            
                SoftwareId = software.SoftwareId,
                SoftwareName = software.SoftwareName
            ;
        
    

值控制器

using DevelopersWeb.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using WebAPI;

namespace DevelopersWeb.Controllers

    public class ValuesController : ApiController
    
        ModelFactory _modelFactory;

        public ValuesController()
        
            _modelFactory = new ModelFactory();
        
        // GET api/values
        public IEnumerable<CustomerModel> Get()
        
            CustomerRepository cr = new CustomerRepository();
            return cr.GetAllCustomers().ToList().Select(c=> _modelFactory.Create(c));
        

        // GET api/values/5
        public string Get(int id)
        
            return "xxx";
        

        // POST api/values
        public void Post([FromBody]string value)
        

        

        // PUT api/values/5
        public void Put(int id, [FromBody]string value)
        
        

        // DELETE api/values/5
        public void Delete(int id)
        
        
    

答案

这里是保存客户对象的方式：

public void CreateCustomer(Customer customer)

    DevelopersEntities dev = new DevelopersEntities();
    dev.Customers.Add(customer)
    dev.SaveChanges();

这是您的api操作：

  // POST api/values
    public void Post([FromBody]CustomerModel customerModel)
    
       //Here you should transform CustomerModel object to customerEntity
        CustomerRepository cr = new CustomerRepository();
        cr.CreateCusomer(customer);

        return Ok();