backend/ExamKing.Application/Services/DeptService.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using Furion.DatabaseAccessor;
using System.Threading.Tasks;
using ExamKing.Application.ErrorCodes;
using ExamKing.Core.Entites;
using ExamKing.Application.Mappers;
using Furion.DatabaseAccessor.Extensions;
using Mapster;
using Furion.DependencyInjection;
using Furion.FriendlyException;
using Microsoft.EntityFrameworkCore;

namespace ExamKing.Application.Services
{
    /// <summary>
    /// 系别服务
    /// </summary>
    public class DeptService : IDeptService, ITransient
    {

        private readonly IRepository<TbDept> _deptRepository;
        private readonly IRepository<TbTeacher> _teacherRepository;

        ///  <summary>
        /// 构造函数
        ///  </summary>
        ///  <param name="deptRepository"></param>
        ///  <param name="teacherRepository"></param>
        public DeptService(
            IRepository<TbDept> deptRepository,
            IRepository<TbTeacher> teacherRepository)
        {
            _deptRepository = deptRepository;
            _teacherRepository = teacherRepository;
        }

        /// <summary>
        /// 查询全部系别和班级
        /// </summary>
        /// <returns></returns>
        public async Task<List<DeptDto>> FindDeptAll()
        {
            var depts = await _deptRepository
                .Entities.AsNoTracking()
                .Select(u => new TbDept
                {
                    Id = u.Id,
                    DeptName = u.DeptName,
                    CreateTime = u.CreateTime,
                    Classes = u.Classes.Select(c=>new TbClass
                    {
                        Id=c.Id,
                        ClassesName=c.ClassesName,
                        CreateTime=c.CreateTime,
                    }).ToList()
                })
                .ToListAsync();