UNIVPLMDataIntegration/Admin.NET/Admin.NET.Core/Attribute/DictAttribute.cs
2024-12-18 20:47:28 +08:00

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// Admin.NET 项目的版权、商标、专利和其他相关权利均受相应法律法规的保护。使用本项目应遵守相关法律法规和许可证的要求。
//
// 本项目主要遵循 MIT 许可证和 Apache 许可证(版本 2.0)进行分发和使用。许可证位于源代码树根目录中的 LICENSE-MIT 和 LICENSE-APACHE 文件。
//
// 不得利用本项目从事危害国家安全、扰乱社会秩序、侵犯他人合法权益等法律法规禁止的活动!任何基于本项目二次开发而产生的一切法律纠纷和责任,我们不承担任何责任!
namespace Admin.NET.Core;
/// <summary>
/// 字典值合规性校验特性
/// </summary>
[SuppressSniffer]
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = true, Inherited = true)]
public class DictAttribute : ValidationAttribute, ITransient
{
/// <summary>
/// 字典编码
/// </summary>
public string DictTypeCode { get; }
/// <summary>
/// 是否允许空字符串
/// </summary>
public bool AllowEmptyStrings { get; set; } = false;
/// <summary>
/// 允许空值,有值才验证,默认 false
/// </summary>
public bool AllowNullValue { get; set; } = false;
/// <summary>
/// 字典值合规性校验特性
/// </summary>
/// <param name="dictTypeCode"></param>
/// <param name="errorMessage"></param>
public DictAttribute(string dictTypeCode, string errorMessage = "字典值不合法!")
{
DictTypeCode = dictTypeCode;
ErrorMessage = errorMessage;
}
/// <summary>
/// 字典值合规性校验
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult IsValid(object? value, ValidationContext validationContext)
{
var valueAsString = value?.ToString();
// 判断是否允许空值
if (AllowNullValue && value == null) return ValidationResult.Success;
// 是否忽略空字符串
if (AllowEmptyStrings && string.IsNullOrEmpty(valueAsString)) return ValidationResult.Success;
var sysDictDataServiceProvider = App.GetRequiredService<SysDictDataService>();
var dictDataList = sysDictDataServiceProvider.GetDataList(DictTypeCode).Result;
// 获取枚举类型可能存在Nullable类型所以需要尝试获取最终类型
var type = value?.GetType();
type = type != null ? Nullable.GetUnderlyingType(type) ?? type : null;
// 使用HashSet来提高查找效率
var valueList = (type?.IsEnum ?? DictTypeCode.EndsWith("Enum")) ? dictDataList.Select(u => u.Code) : dictDataList.Select(u => u.Value);
var dictHash = new HashSet<string>(valueList);
if (!dictHash.Contains(valueAsString))
return new ValidationResult($"提示:{ErrorMessage}|字典【{DictTypeCode}】不包含【{valueAsString}】!");
return ValidationResult.Success;
}
}