[英]Best way to share Automapper Resolver
我有一个viewmodel设置,其中包含几个指向服务器上文件的物理路径字符串。 我有虚拟目录指向服务器上的根文件夹。 我需要做的是将此物理路径更改为引用虚拟文件夹的路径,以便在页面视图中创建超级链接。
我希望做的是拥有一个通用的解析器,可以将密钥传递给该解析器,然后让它返回所需的路径。 这是我的方法。 我只想看看是否有更简单的“清洁”方法。 我仅使用mvc和c#已有几个月,所以我仍在学习。
预先感谢。
这是映射器信息
Mapper.CreateMap<FAG_DETAIL, OrderFagDetail>()
.ForMember(dest => dest.TXT01, opt => opt.ResolveUsing<DrawingPathCorrect>())
.ForMember(dest => dest.TXT02, opt => opt.ResolveUsing<Prog1PathCorrect>())
.ForMember(dest => dest.TXT03, opt => opt.ResolveUsing<Prog2PathCorrect>())
.ForMember(dest => dest.TXT04, opt => opt.ResolveUsing<Prog3PathCorrect>())
.ForMember(dest => dest.TXT05, opt => opt.ResolveUsing<Prog4PathCorrect>())
.ForMember(dest => dest.TXT07, opt => opt.ResolveUsing<Procs1PathCorrect>())
.ForMember(dest => dest.TXT08, opt => opt.ResolveUsing<Procs2PathCorrect>())
.ForMember(dest => dest.TXT09, opt => opt.ResolveUsing<Procs3PathCorrect>())
.ForMember(dest => dest.TXT10, opt => opt.ResolveUsing<Procs4PathCorrect>())
.ForMember(dest => dest.TXT11, opt => opt.ResolveUsing<FASPathCorrect>())
.ForMember(dest => dest.TXT06, opt => opt.ResolveUsing<SecondDrawingPathCorrect>());
这是ModelView以及我当前正在使用的解析器。 用于OrderfagDetail的模型FAG_DETAIL非常大,因此在此不再赘述。 可以安全地假设源中存在与ModelView属性完全匹配的属性。
public class OrderFagDetail
{
public decimal NO { get; set; }
public decimal FKNO { get; set; }
public decimal TYP { get; set; }
public string TXT01 { get; set; } //drawing link
public string TXT02 { get; set; } //First Op program or L20 Program
public string TXT03 { get; set; } //Second op program or K16 Program
public string TXT04 { get; set; } //Third op Program
public string TXT05 { get; set; } //Fourth op Program
public string TXT06 { get; set; } //Second drawing
public string TXT07 { get; set; } //First Op process sheet
public string TXT08 { get; set; } //Second Op process sheet
public string TXT09 { get; set; } //Third Op process sheet
public string TXT10 { get; set; } //Fourth Op process sheet
public string TXT11 { get; set; } //First Article link
}
public interface IValueResolver
{
ResolutionResult Resolve(ResolutionResult source);
}
public class SecondDrawingPathCorrect : ValueResolver<FAG_DETAIL, string>
{
protected override string ResolveCore(FAG_DETAIL detail)
{
PathResolver pr = new PathResolver();
return (pr.ResolvePath(detail.TXT06,"PDFs\\"));
}
}
public class PathResolver
{
public string ResolvePath(string strSrc, string strKey)
{
string corrected = "";
if (strSrc.Length > 0)
{
string inputdetail = strSrc;
corrected = inputdetail.Substring(inputdetail.IndexOf(strKey)+strKey.Length, inputdetail.Length - inputdetail.IndexOf(strKey)-strKey.Length);
}
return (corrected);
}
}
也许为了改进,您可以将PathResolver类设为static或singleton,不同之处在于Static Class:
辛格尔顿:
假设您有多个像这样的CreateMap:
Mapper.CreateMap<PdfFileObject, MyViewModel>()
.ForMember( d => d.Uri, opt => opt.ResolveUsing(something with "pdfs")
Mapper.CreateMap<ImageFileObject, MyViewModel>()
.ForMember( d => d.Uri, opt => opt.ResolveUsing(something with "images")
..etc
像这样创建您的解析器:
public class SecondDrawingPathCorrect<TFILE> : ValueResolver<FAG_DETAIL, string>
where TFILE : FAG_DETAIL
{
private readonly string _replaceKey;
public SecondDrawingPathCorrect(string replaceKey)
{
_replaceKey = replaceKey;
}
protected override string ResolveCore(FAG_DETAIL detail)
{
string corrected = "";
if (detail.TXT06.Length > 0)
{
string inputdetail = detail.TXT06;
corrected = inputdetail.Substring(inputdetail.IndexOf(_replaceKey) + 5, inputdetail.Length - inputdetail.IndexOf("_replaceKey) - 5);
}
return corrected;
}
}
像这样注册您的地图:
Mapper.CreateMap<PdfFileObject, MyViewModel>()
.ForMember( d => d.Uri, opt => opt.ResolveUsing(new SecondDrawingPathCorrect<PdfFileObject>("PDFs");
为使以上各项起作用,您的PfdFileObject,ImageFileObject等应实现/继承FAG_DETAIL。
还有另一个选择,如果您可以控制FAG_DETAIL,则可以在其上公开属性字符串FilePathPrefix(对于PdfFileObject,该属性字符串将返回“ PDF”)。 然后,您可以在解析器本身中使用它(即,在“替换”部分中使用detail.FilePrefix而不是_replaceKey)。
使用最新的版本,您可以删除resolver的通用部分,并进行如下注册:
Mapper.CreateMap<FAG_DETAIL, MyViewModel>()
.ForMember( d => d.Uri, opt => opt.ResolveUsing<SecondDrawingPathCorrect>()
.Include<PdfFileObject, MyViewModel>()
.Include<ImageFileObject, MyViewModel>()
...more includes;
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