The view model in asp.net mvc Diaries

The view model in asp.net mvc Diaries

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public course UserVM public int ID get; set; community string FirstName get; set; public string LastName get; set; community bool IsAdministrator get; established; public string MothersName get; set;

I didn't read through many of the posts but just about every solution is apparently missing one particular thought that actually assisted me "get it"...

There's a school of thought that domain entities are not the place for placing validation procedures or scaffolding and labelling Recommendations, simply because these are generally are purely presentational issues. As a result the entity shouldn't be subjected to the presentation layer, whilst Element of a composite View Model course. Additionally, there are stability concerns associated with mass-assignment vulnerabilities and above-submitting attacks exactly where malicious people can craft HTTP requests that include values for entity Attributes that aren't included in the HTML kind.

Models, Controllers and Views Each individual have nicely outlined roles and duties, and they convey amongst one another in perfectly defined approaches. This can help endorse testability and code reuse.

Adhere to the most effective apply of Arranging the file framework on your views to replicate the interactions amid controllers, actions, and views for maintainability and clarity.

Investigating the above two lessons we could see that one way to consider a view model is that it's a presentation model which contains One more view model in asp.net mvc presentation model being a property.

A standard method of making a View Model is always to compose it from some domain entities and maybe a sprinkling of Homes. A View for adding a new products to your Northwind database will require fields for every one of the Solution properties along with a method of specifying which Classification the new Product item belongs to. This is something which will do the job:

JonJon 438k8585 gold badges755755 silver badges817817 bronze badges two one This solution is simply partly correct and never quite express ("...ViewModel has the express objective of facilitating it" isn't going to demonstrate something.

There is often a volume of work, nevertheless it often differs in sum based upon wherever it's placed. Inline JavaScript declarations and initializations are acceptable in a View to stop inconvenience and increased exertion.

ViewModels (as well as Model View ViewModel sample) is more usually related to Silverlight and WPF. Xaml is a bit different in the views can do two-way binding to your ViewModels, Therefore the engineering is somewhat distinctive.

Presentation models generally consist of Homes which can be other presentation models. Presentation models tend to be made for a single-use intent for example to render a certain grid on just one page.

Frequently existing a denormalized view of information. Which is, they frequently Incorporate Houses from several DTOs.

To my knowing, it's a style of Model that features a distinct objective of interacting While using the View? Or some thing like that?

For this later scenario, you might have the action technique update a ViewModel object Using the type-posted info, then make use of the ViewModel instance to map or retrieve an real domain model item.