client-side-validation

I am trying to use both client_side_validations and devise in my Rails app, and get a weird bug in the log in form. It's says that the email has already been taken and doesn't let the user to log in :) Email is used as the login. This is only when I set the :validate => true. When I turn off the setting :validate => true, the log in is performed successfully. What might cause this problem? I got the answer from the author of the client_side_validations: For login form you don't want to have the uniqueness validator. So you'll need to do something like: f.text_field :email, :validate => {

Is there any high level reason to have both client side and server side validations for a web application ? Because your client side validation may be subverted. For example - on the web, if you are using javascript for validation, it is very easy to either turn javascript off, or change how it works using tools such as FireBug. Event with other client/server methods, it is possible for the data link to be subverted and the "validated" data can be changed on the way to the server ( Man In The Middle attack). In general, the maxim "never trust the client" is the reason that you need to always

Is it better to validate user input before it's sent to the server with JS or server side with PHP? Or maybe it's worth doing both just to be on the safe side? I'm creating a site (very simple at the moment) that has a members area/admin area/etc. At the moment i only have user input of Username and Password, in the future there will be more (email, address, etc), but whats the best practice of checking the data? Do i throw a load of 'if...else' statements at it until the user gets it right? Or maybe have separate variables for each value entered by the user and set it to true or false if it's

I am using client validation rails gem and I got this error. Any idea..... wrong number of arguments (3 for 2) Extracted source (around line #1): <%= form_for @user, :validate => true do |f| %> Trace of template inclusion: app/views/users/new.html.erb Based on https://github.com/bcardarella/client_side_validations/issues/494 it looks like CSV will not support Rails 4 for a little bit longer. However it also states I don't see CSV 4.0 coming out for at least 2 months after Rails 4.0 lands (hopefully not that long) as there will be major changes on the JavaScript side of things. Because it will

Of course, I know that server-side validation is a MUST . I'm using jQuery to validate form inputs and using jquery ajax to do server-side(PHP) validation at the same time. So I guess it may be safe since it's validating for both sides while javascript is enabled . Well, here is my problem... But what if the user has javascript disabled on his browser and if some bad guys try to do something bad from editing my client-side script? Because i'm making server-side validation through jquery ajax, and i'm planning not to validate them directly in php script(action="some.php") even user's javascript

Need to validate a radio button input, i.e. when submit button is pressed and no radio buttons have been selected, it alerts the user saying 'please select a check box', and if a radio button has been selected then simply submit the form, needs no alert. Can only use HTML CSS and JavaScript for this, I know it's 1000 times easier in jquery but sadly I can't use that. And I know my HTML isn't valid, but unless it directly affects my current problem then I'll handle it later. <form name="form1" action="#" onsubmit="return validateForm()" method="post"> First time visitor?:<br/> <label for="s1"

Using Visual Studio 2013.4 (Visual Studio 2013 Update 4) I have created a regular ASP.NET MVC 5 project with Individual User Accounts authentication configuration. All the users registration and log-in features has been already scaffolded for me by Visual Studio and works fine. How to implement client-side validation of the following rule on the registration page: There is no already registered user with the same Email ? You could use RemoteAttribute to perform client side validation with a server callback. 1) Add the following method to the AccountController : [AllowAnonymous] public async

What I would Like I would like to trigger client-side validation in my View with an event of my choice. It could be 'onblur' maybe another button but something other than the submit button. Relevant Links How to trigger validation without using a submit button Applying unobtrusive jquery validation to dynamic content in ASP.Net MVC What I've tried Given a various event listener, I've fired the following methods with no luck: $(selector).validate(); $(selector).valid(); $.validator.unobtrusive.parseDynamicContent(selector); $.validator.unobtrusive.parse($(selector)); Summary So I need client