33 lines
828 B
C#
33 lines
828 B
C#
using System.ComponentModel.DataAnnotations;
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namespace CampusErrand.Models;
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/// <summary>
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/// 系统消息表
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/// </summary>
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public class SystemMessage
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{
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[Key]
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public int Id { get; set; }
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/// <summary>标题</summary>
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[MaxLength(128)]
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public string Title { get; set; } = string.Empty;
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/// <summary>正文（富文本）</summary>
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public string Content { get; set; } = string.Empty;
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/// <summary>缩略图</summary>
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[MaxLength(512)]
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public string? ThumbnailUrl { get; set; }
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/// <summary>目标类型</summary>
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public MessageTargetType TargetType { get; set; }
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/// <summary>指定用户 ID 列表（JSON）</summary>
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public string? TargetUserIds { get; set; }
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/// <summary>发布时间</summary>
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public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
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}
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