Walidacja MVC niższa/wyższa niż inne wartości
Jak najlepiej walidować model w MVC.Net gdzie chcę zaakceptować minimum / maksimum.
Nie pojedyncze wartości min / max dla pola. Ale oddzielne pola dla użytkownika, aby określić minimum / maksimum.
public class FinanceModel{
public int MinimumCost {get;set;}
public int MaximumCost {get;set;}
}
Więc muszę upewnić się, że MinimumCost jest zawsze mniejszy niż maksymalny koszt.
5 answers
Możesz użyć niestandardowego atrybutu walidacji oto mój przykład z datami. Ale możesz go również używać z ints.
Po pierwsze, oto model:
public DateTime Beggining { get; set; }
[IsDateAfterAttribute("Beggining", true, ErrorMessageResourceType = typeof(LocalizationHelper), ErrorMessageResourceName = "PeriodErrorMessage")]
public DateTime End { get; set; }
A oto sam atrybut:
public sealed class IsDateAfterAttribute : ValidationAttribute, IClientValidatable
{
private readonly string testedPropertyName;
private readonly bool allowEqualDates;
public IsDateAfterAttribute(string testedPropertyName, bool allowEqualDates = false)
{
this.testedPropertyName = testedPropertyName;
this.allowEqualDates = allowEqualDates;
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var propertyTestedInfo = validationContext.ObjectType.GetProperty(this.testedPropertyName);
if (propertyTestedInfo == null)
{
return new ValidationResult(string.Format("unknown property {0}", this.testedPropertyName));
}
var propertyTestedValue = propertyTestedInfo.GetValue(validationContext.ObjectInstance, null);
if (value == null || !(value is DateTime))
{
return ValidationResult.Success;
}
if (propertyTestedValue == null || !(propertyTestedValue is DateTime))
{
return ValidationResult.Success;
}
// Compare values
if ((DateTime)value >= (DateTime)propertyTestedValue)
{
if (this.allowEqualDates && value == propertyTestedValue)
{
return ValidationResult.Success;
}
else if ((DateTime)value > (DateTime)propertyTestedValue)
{
return ValidationResult.Success;
}
}
return new ValidationResult(FormatErrorMessage(validationContext.DisplayName));
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationRule
{
ErrorMessage = this.ErrorMessageString,
ValidationType = "isdateafter"
};
rule.ValidationParameters["propertytested"] = this.testedPropertyName;
rule.ValidationParameters["allowequaldates"] = this.allowEqualDates;
yield return rule;
}
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2013-09-02 16:58:30
Istnieje pakiet NuGet o nazwie Foolproof , który zawiera te adnotacje dla Ciebie. To powiedziawszy-pisanie niestandardowego atrybutu jest zarówno dość łatwe, jak i Dobre praktyki.
Użycie Foolproof wyglądałoby następująco:
public class FinanceModel{
public int MinimumCost {get;set;}
[GreaterThan("MinimumCost")]
public int MaximumCost {get;set;}
}
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2013-09-02 17:08:41
Dla walidacji po stronie klienta przy użyciu parametrów allowEqualDates i propertyTested (uzupełnienie odpowiedzi Boranas powyżej, ale zbyt długie na komentarz):
// definition for the isdateafter validation rule
if ($.validator && $.validator.unobtrusive) {
$.validator.addMethod('isdateafter', function (value, element, params) {
value = Date.parse(value);
var otherDate = Date.parse($(params.compareTo).val());
if (isNaN(value) || isNaN(otherDate))
return true;
return value > otherDate || (value == otherDate && params.allowEqualDates);
});
$.validator.unobtrusive.adapters.add('isdateafter', ['propertytested', 'allowequaldates'], function (options) {
options.rules['isdateafter'] = {
'allowEqualDates': options.params['allowequaldates'],
'compareTo': '#' + options.params['propertytested']
};
options.messages['isdateafter'] = options.message;
});
}
Więcej informacji: Dyskretna Walidacja, jQuery validation
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2015-09-16 10:55:03
W VB dla liczb całkowitych:
MODEL
<UtilController.IsIntegerGreatherOrEqualThan("PropertyNameNumberBegins", "PeriodErrorMessage")>
Public Property PropertyNameNumberEnds As Nullable(Of Integer)
Walidacja
Public Class IsIntegerGreatherOrEqualThan
Inherits ValidationAttribute
Private otherPropertyName As String
Private errorMessage As String
Public Sub New(ByVal otherPropertyName As String, ByVal errorMessage As String)
Me.otherPropertyName = otherPropertyName
Me.errorMessage = errorMessage
End Sub
Protected Overrides Function IsValid(thisPropertyValue As Object, validationContext As ValidationContext) As ValidationResult
Dim otherPropertyTestedInfo = validationContext.ObjectType.GetProperty(Me.otherPropertyName)
If (otherPropertyTestedInfo Is Nothing) Then
Return New ValidationResult(String.Format("unknown property {0}", Me.otherPropertyName))
End If
Dim otherPropertyTestedValue = otherPropertyTestedInfo.GetValue(validationContext.ObjectInstance, Nothing)
If (thisPropertyValue Is Nothing) Then
Return ValidationResult.Success
End If
'' Compare values
If (CType(thisPropertyValue, Integer) >= CType(otherPropertyTestedValue, Integer)) Then
Return ValidationResult.Success
End If
'' Wrong
Return New ValidationResult(errorMessage)
End Function
End Class
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2017-10-22 17:07:20
Dlaczego nie są używane range Validator. Składnia:
[Range(typeof(int), "0", "100", ErrorMessage = "{0} can only be between {1} and {2}")]
public int Percentage { get; set; }
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2013-09-03 11:45:40