danielgreen’s gists

danielgreen / submitHandler.ClearValidationSummary.js

Last active December 17, 2015 20:49

The jQuery Validation library apparently does not clear or hide the Validation Summary list after a successful validation. If the form is valid and will be submitted to the server, it looks better to hide the list. Use a submitHandler callback to deal with this.

	// Set the submitHandler callback via the settings object, as is necessary if you are using Unobtrusive Validation.
	// If you are not using Unobtrusive Validation then you can set submitHandler in the options object passed to validate().
	$("#iTrentExportForm").validate().settings.submitHandler = function (form) {
	BlockPage(); // you may want to block the page during the Ajax call

	var container = $(form).find("[data-valmsg-summary=true]"),
	list = container.find("ul");

	if (list && list.length) {
	list.empty();

danielgreen / AjaxRequestAttribute.cs

Created May 29, 2013 12:49

A filter that can be applied to an MVC action to specify that either Ajax or non-Ajax requests should not be allowed.

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Reflection;
	using System.Web;
	using System.Web.Mvc;

	namespace SFR.TOR.Web.Filters
	{
	/// <summary>

danielgreen / AjaxResultAttribute.cs

Last active January 15, 2018 08:36

ASP.NET MVC does not help you to display validation errors, perform browser redirects, or update the UI if the browser postback used Ajax instead of a normal form post. The following code deals with these situations using Knockout. Use ajax_ProcessSuccess as the OnSuccess callback for Ajax.BeginForm (see http://bradwilson.typepad.com/blog/2010/1…

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Net;
	using System.Web;
	using System.Web.Mvc;
	using System.Web.Routing;
	using Web.Json;

	namespace Web.Filters

danielgreen / ValidateHiddenFields.js

Last active October 26, 2023 14:19

The jQuery Validation plugin does not validate hidden fields by default. Here is how to get around that.

	// By default, the jQuery Validation plugin ignores hidden fields. You may want them to be validated however.
	// The default 'ignore' setting is ':hidden'
	// See https://github.com/jzaefferer/jquery-validation/issues/189

	// Attach a validator to a particular form, with a blank 'ignore' setting.
	// If you are using Unobtrusive Validation then you can't do this, as the Unobtrusive script initialises the plugin for you.
	// Instead, you must either amend the setting on the validator once it's attached to the form,
	// or amend the default setting before the validator is attached (read on to see how).
	$("MyForm").validate({ ignore: "" });

danielgreen / AssertValueAttribute.cs

Last active December 17, 2015 20:39

AssertValue is a validation attribute (i.e. a data annotation) that can be applied to a property of a view model class. It causes the property to be invalid unless it has the value specified in the attribute's constructor. The attribute implements IClientValidatable which ties it up with client-side JavaScript in order to replicate the validatio…

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Web;
	using System.Web.Mvc;
	using System.ComponentModel;
	using System.ComponentModel.DataAnnotations;

	namespace Validators
	{

danielgreen / jquery.unobtrusive-ajax.errorfix.js

Created May 29, 2013 10:35

This is an amended fragment of Microsoft jQuery Unobtrusive Ajax (http://nuget.org/packages/Microsoft.jQuery.Unobtrusive.Ajax). The change is to the error property, to ensure that it calls .apply() to invoke the function specified by the data-ajax-failure attribute. Previously it did not call .apply() hence the error handler specified by the pag…

	$.extend(options, {
	type: element.getAttribute("data-ajax-method") \|\| undefined,
	url: element.getAttribute("data-ajax-url") \|\| undefined,
	beforeSend: function (xhr) {
	var result;
	asyncOnBeforeSend(xhr, method);
	result = getFunction(element.getAttribute("data-ajax-begin"), ["xhr"]).apply(this, arguments);
	if (result !== false) {
	loading.show(duration);
	}

danielgreen / jquery.validate.submithandlerfix.js

Created May 29, 2013 09:59

This is an amended fragment of jquery.validate.js (https://github.com/jzaefferer/jquery-validation). The change is to take the value returned from validator.settings.submitHandler.call, and return that value from the handle function. This means that a page that uses submitHandler to take some action upon a successful validation can simply return…

	// validate the form on submit
	this.submit( function( event ) {
	if ( validator.settings.debug ) {
	// prevent form submit to be able to see console output
	event.preventDefault();
	}
	function handle() {
	var hidden;
	if ( validator.settings.submitHandler ) {
	if (validator.submitButton) {

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