74 lines
2.5 KiB
C#
74 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Text;
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using System.Threading.Tasks;
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using VOL.Core.Configuration;
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using VOL.Core.DBManager;
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using VOL.Core.DbSqlSugar;
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using VOL.Core.Enums;
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using VOL.Core.Extensions;
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namespace VolPro.Core.Extensions
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{
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public static class IdentityCode
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{
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/// <summary>
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/// 创建自增单据号
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="entity">实体对象</param>
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/// <param name="codeField">要设置单据号的字段</param>
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/// <param name="preCode">单据号前缀,如：{TC}{2023}{0001}</param>
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/// <param name="dateFieldExpression">排序字段，每天都从第1个号码开始</param>
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///
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/// 使用示例：
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/// Sys_User user= new Sys_User();
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/// user.Create(x => x.UserName, "U", x => x.CreateDate);
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/// <returns></returns>
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public static string Create<T>(this T entity,
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Expression<Func<T, object>> codeField,
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string preCode = "Code",
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Expression<Func<T, object>> dateFieldExpression = null
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) where T : class
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{
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string dateField;
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if (dateFieldExpression == null)
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{
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dateField = AppSetting.CreateMember.DateField;
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}
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else
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{
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dateField = dateFieldExpression.GetExpressionPropertyFirst();
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}
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DateTime dateNow = (DateTime)DateTime.Now.ToString("yyyy-MM-dd").GetDateTime();
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var condition = dateField.CreateExpression<T>(dateNow, LinqExpressionType.ThanOrEqual);
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var field = codeField.GetExpressionPropertyFirst();
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var select = field.GetExpression<T, string>();
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string orderNo = DbManger.Db.Queryable<T>().Where(condition)
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.OrderByDescending(codeField)
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.Select(select)
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.FirstOrDefault()
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?.ToString();
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string rule = $"{preCode}{DateTime.Now.ToString("yyyyMMdd")}";
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if (string.IsNullOrEmpty(orderNo))
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{
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rule += "0001";
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}
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else
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{
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rule += (orderNo.Substring(orderNo.Length - 4).GetInt() + 1).ToString("0000");
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}
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var property = typeof(T).GetProperty(field);
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property.SetValue(entity, rule);
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return rule;
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}
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}
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}
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