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mvc custom validation compare two dates

mvc custom validation compare two dates  using -'jquery,,,validation'

I've created a custom ValidationAttribute that compares 2 dates and makes sure that the second date is greater than the first:

public sealed class IsDateAfter : ValidationAttribute, IClientValidatable
    private readonly string testedPropertyName;
    private readonly bool allowEqualDates;

    public IsDateAfter(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)
                return ValidationResult.Success;
            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;

CalendarEntry class:

public virtual DateTime StartDate { get; set; }

[IsDateAfter("StartDate", true, ErrorMessage="End date needs to be after start date")]
public virtual DateTime EndDate { get; set; }


    'isdateafter', ['propertytested', 'allowequaldates'], function (options) {
    options.rules['isdateafter'] = options.params;
    options.messages['isdateafter'] = options.message;
$.validator.addMethod("isdateafter", function(value, element, params) {
    var startdatevalue = $('input[name="' + params.propertytested + '"]').val();
    if (!value || !startdatevalue) return true;
    return (params.allowequaldates) ? Date.parse(startdatevalue) <= Date.parse(value) : Date.parse(startdatevalue) < Date.parse(value);
}, '');

This works fine when the CalendarEntry is not wrapped inside another class. HOWEVER, when I use a view model like so:

    public class TrainingDateEditViewModel
        #region Properties

        /// <summary>
        /// Gets or sets CalendarEntry.
        /// </summary>
        public CalendarEntry CalendarEntry { get; set; }

The client validation no longer works because the html output produced is this:

<input type="text" value="" name="CalendarEntry.EndDate" id="CalendarEntry_EndDate" data-val-isdateafter-propertytested="StartDate" data-val-isdateafter-allowequaldates="True" data-val-isdateafter="End date needs to be after start date" data-val="true">

And the

data-val-isdateafter-propertytested="StartDate" and IT SHOULD BE: "CalendarEntry.StartDate".

How would I make it so that it would know to bind to "CalendarEntry.StartDate"
rule.ValidationParameters["propertytested"] = this.testedPropertyName; // HERE IT SHOULD BE FULL NAME??? HOW??

asked Sep 24, 2015 by patilkiran.101
0 votes

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