I wrote my own middleware for the list in my MVC project, but now I'm stuck on how to get this middleware to check for my DataAnnotations validation attributes.
I found several posts in interwebs that talk about similar scripts, but I could not find anything that works for my specific script.
Model Binding Code:
public class QuestionModelBinder : IModelBinder { public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) { List<QuestionEditModel> res = new List<QuestionEditModel>(); var form = controllerContext.HttpContext.Request.Form; int i = 0; while (!string.IsNullOrEmpty(form["Questions[" + i + "].QuestionID"])) { var p = new QuestionEditModel(); p.QuestionID = form["Questions[" + i + "].QuestionID"]; p.Answer = form["Questions[" + i + "].Answer"]; p.AnswerRequired = (form["Questions[" + i + "].AnswerRequired"] == "True") ? true : false; p.completedBy = form["Questions[" + i + "].completedBy"]; p.completedOn=NullableParser.ParseNullableDateTime(form["Questions[" + i + "].CompletedOn"]); p.DefaultText = form["Questions[" + i + "].DefaultText"]; p.EntryType = form["Questions[" + i + "].EntryType"]; p.HelpText = form["Questions[" + i + "].HelpText"]; p.OptionRequired = (form["Questions[" + i + "].OptionRequired"] == "True") ? true : false; p.OptionValue = NullableParser.ParseNullableInt(form["Questions[" + i + "].OptionValue"]); p.QuestionName = form["Questions[" + i + "].QuestionName"]; p.QuestionText = form["Questions[" + i + "].QuestionText"]; res.Add(p); i++; } return res; } private bool HasGenericTypeBase(System.Type type, System.Type genericType) { while (type != typeof(object)) { if (type.IsGenericType && type.GetGenericTypeDefinition() == genericType) return true; type = type.BaseType; } return false; } }
My MetaData Model:
[MetadataType(typeof(QuestionEditModelMetaData))] public partial class QuestionEditModel { } public class QuestionEditModelMetaData { [Required] public string QuestionID { get; set; } [Required] public string QuestionName { get; set; } [Required] public string QuestionText { get; set; } [Required] public string DefaultText { get; set; } [Required] public string EntryType { get; set; } [Required] public string HelpText { get; set; } public Boolean AnswerRequired { get; set; } public Boolean OptionRequired { get; set; } //[RequiredIfTrue("AnswerRequired")] [Required] public string Answer { get; set; } [RequiredIfTrue("OptionRequired")] public int? OptionValue { get; set; } public string completedBy { get; set; } public DateTime? completedOn { get; set; } public List<Option> options { get; set; } }
The RequiredIfTrue attribute is in the MVC Foolproof Validation library. Apparently, it is not reliable enough!
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