viewmodel

I want to use RenderPartial twice in my view with different models associated. The problem is that some properties are present in both models (nickname, password). They have no prefix, so even the id's or names are equal in the output. Now, if I have model errors for nickname or password, both fields get highlighted. Main View: <div> <% Html.RenderPartial("Register", Model.RegisterModel); %> </div> <div> <% Html.RenderPartial("Login", Model.LoginModel); %> </div> Login PartialView: <% using (Html.BeginForm("Login", "Member")) { %> <fieldset> <legend>Login</legend> <p> <%= Html.LabelFor(x => x

Should viewmodels be limited to only have properties, and not methods? Let's say I have a radio button in my view, and wants to see if the radio button should be checked. I could do this entirely in my view: @Html.RadioButton("radiobuttonName", "The value", (id == Model.PersonId)) or I could move this logic into the viewmodel: @Html.RadioButton("radiobuttonName", "The value", Model.IsChecked(id) using this method in the viewmodel: public int PersonId { get;set;} public bool IsChecked(int id) { return (id == PersonId); } Is this OK to do, or should it be done entirely in the view, or in some

I like to strive for DRY, and obviously it's not always possible. However, I have to scratch my head over a concept that seems pretty common in MVC, that of the "View Model". The View Model is designed to only pass the minimum amount of information to the view, for both security, maintainability, and testing concerns. I get that. It makes sense. However, from a DRY perspective, a View Model is simply duplicating data you already have. The View Model may be temporary, and used only as a DTO, but you're basically maintaing two different versions of the same model which seems to violate the DRY

I've started using (as of, a few hours ago) Durandal with the hope to manage views and allow composition within a single page - the previous approach, also using Knockout, was getting too unwieldy to maintain in a fat HTML file. I've installed/setup Durandal and I can create views and viewmodels - however, I don't know how to get data into the viewmodel to use as a basis for the new viewmodel. For instance, I have a "left nav bar" for selecting items - when an item is selected it updates a "selected item" observable in the current model, but it should also load the correct "detail view" in the

In my ASP.NET MVC app, I have a fairly complex edit page which combines a number of models into one view. I'm using the ViewModel pattern to combine all of this information and present one cohesive object to the View. As an example, my ViewModel structure is something like this: CompanyId CompanyName List<Employee> Employees List<ContactMethod> ContactMethods The Employee object has a number of basic properties, and a preferred contact method. On the edit page, the user is given all of the employees of the company and they have the ability to add and remove (using javascript), as well as edit

I am new to Knockout.js. What is the best way to select() an <input /> when it becomes visible? View: <p> Name: <b data-bind="visible: !editing(), text: name, click: edit"> </b> <input data-bind="visible: editing, value: name, hasfocus: editing" /> </p> ViewModel: function PersonViewModel(name) { // Data this.name = ko.observable(name); this.editing = ko.observable(false); // Behaviors this.edit = function() { this.editing(true) } } ko.applyBindings(new PersonViewModel("Bert Bertington")); http://knockoutjs.com/documentation/hasfocus-binding.html http://jsfiddle.net/RnCUd/ Thanks! You can