\u041f\u0440\u0438\u043c\u0435\u0440 \u0432\u0430\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043e\u0434\u043d\u0438\u0445 \u043f\u043e\u043b\u0435\u0439 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445.<\/p>\n
\u041e\u0442\u0441\u044e\u0434\u0430: https:\/\/gist.github.com\/elizabeth-young\/5875161
\n<\/p>\n
\npublic enum Comparison\n{\n IsEqualTo,\n IsNotEqualTo\n}\n\/\/\/ \n\/\/\/ Validation attribute for required value if another property is set\n\/\/\/ <\/summary>\n[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)]\npublic sealed class RequiredIfAttribute : ValidationAttribute, IClientValidatable\n{\n private const string DefaultErrorMessageFormatString = \"The {0} field is required.\";\n public string OtherProperty { get; private set; }\n public Comparison Comparison { get; private set; }\n public Object Value { get; private set; }\n\n public RequiredIfAttribute(string otherProperty, Comparison comparison, object value)\n {\n if (string.IsNullOrEmpty(otherProperty))\n {\n throw new ArgumentNullException(\"otherProperty\");\n }\n\n OtherProperty = otherProperty;\n Comparison = comparison;\n Value = value;\n }\n\n public override string FormatErrorMessage(string name)\n {\n return string.Format(ErrorMessageString, name, OtherProperty);\n }\n\n public bool Validate(object actualPropertyValue)\n {\n switch (Comparison)\n {\n case Comparison.IsNotEqualTo:\n return actualPropertyValue == null ? Value != null : !actualPropertyValue.Equals(Value);\n default:\n return actualPropertyValue == null ? Value == null : actualPropertyValue.Equals(Value);\n }\n }\n\n protected override ValidationResult IsValid(object value, ValidationContext validationContext)\n {\n if (value == null)\n {\n try\n {\n var property = validationContext.ObjectInstance.GetType().GetProperty(OtherProperty);\n var propertyValue = property.GetValue(validationContext.ObjectInstance, null);\n\n if (Validate(propertyValue))\n {\n return new ValidationResult(FormatErrorMessage(validationContext.DisplayName));\n }\n }\n catch (Exception e)\n {\n if (OtherProperty.Contains('_'))\n {\n var prop = OtherProperty.Split('_');\n\n var property = validationContext.ObjectInstance.GetType().GetProperty(prop.Last());\n var propertyValue = property.GetValue(validationContext.ObjectInstance, null);\n\n if (!Validate(propertyValue))\n {\n return new ValidationResult(FormatErrorMessage(validationContext.DisplayName));\n }\n }\n }\n }\n return ValidationResult.Success;\n }\n\n public IEnumerable GetClientValidationRules(ModelMetadata metadata,\n ControllerContext context)\n {\n return new[]\n {\n new ModelClientValidationRequiredIfRule(\n FormatErrorMessage(metadata.GetDisplayName()), OtherProperty, Comparison, Value, metadata,\n context)\n };\n }\n}\n\npublic class ModelClientValidationRequiredIfRule : ModelClientValidationRule\n{\n public ModelClientValidationRequiredIfRule(string errorMessage, string otherProperty, Comparison comparison,\n object value, ModelMetadata metadata, ControllerContext context)\n {\n ErrorMessage = errorMessage;\n ValidationType = \"requiredif\";\n ValidationParameters.Add(\"other\", BuildDependentPropertyId(metadata, context as ViewContext, otherProperty));\n ValidationParameters.Add(\"comp\", comparison.ToString().ToLower());\n ValidationParameters.Add(\"value\", value.ToString().ToLower());\n }\n\n private string BuildDependentPropertyId(ModelMetadata metadata, ViewContext viewContext, string otherProperty)\n {\n return QualifyFieldId(metadata, otherProperty, viewContext);\n }\n\n protected string QualifyFieldId(ModelMetadata metadata, string fieldId, ViewContext viewContext)\n {\n \/\/ build the ID of the property\n string depProp = viewContext.ViewData.TemplateInfo.GetFullHtmlFieldId(fieldId);\n \/\/ unfortunately this will have the name of the current field appended to the beginning,\n \/\/ because the TemplateInfo's context has had this fieldname appended to it. Instead, we\n \/\/ want to get the context as though it was one level higher (i.e. outside the current property,\n \/\/ which is the containing object (our Person), and hence the same level as the dependent property.\n var thisField = metadata.PropertyName + \"_\";\n if (depProp.StartsWith(thisField))\n \/\/ strip it off again\n depProp = depProp.Substring(thisField.Length);\n else if (depProp.Contains(thisField))\n {\n depProp = depProp.Remove(depProp.IndexOf(thisField), thisField.Length);\n }\n return depProp;\n }\n}\n<\/pre>\n","protected":false},"excerpt":{"rendered":"\u041f\u0440\u0438\u043c\u0435\u0440 \u0432\u0430\u043b\u0438\u0434\u0430\u0446\u0438\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043e\u0434\u043d\u0438\u0445 \u043f\u043e\u043b\u0435\u0439 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445. \u041e\u0442\u0441\u044e\u0434\u0430: https:\/\/gist.github.com\/elizabeth-young\/5875161<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,32],"tags":[154],"class_list":["post-200","post","type-post","status-publish","format-standard","hentry","category-aspnet","category-csharp","tag-validatsiya"],"_links":{"self":[{"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/posts\/200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/comments?post=200"}],"version-history":[{"count":0,"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/posts\/200\/revisions"}],"wp:attachment":[{"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/media?parent=200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/categories?post=200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/infobase.athn.ru\/program\/wp-json\/wp\/v2\/tags?post=200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}