Using a Pure View Model for Form Initialization

In the new action of the movies controller, the movie property of the view model is set to a new movie, ensuring that the hidden fill in the form will be populated with a value.

To solve the problem of a validation error for the ID property, one approach is to remove a line of code and use the hidden method instead of hidden form and initialize the ID using a conditional statement. However, this approach has the problem of using a magic string.

A better approach is to create a pure view model for the form and make the properties nullable, eliminating the need for initial values in the form. This involves adding the necessary properties to the view model and importing the required namespaces.

In the application, the broken references caused by the removal of the movie property can be fixed easily using find and replace. In the edit action of the controller, individual property assignments need to replace the line of code that initializes the view model. The logic for initializing the view model can be moved into the view model's constructor. In the save action, the movie object is passed to the view model when creating it.

In conclusion, using a pure view model for form initialization ensures that initial values are not required in the form and eliminates the need for magic strings.

Browse more

Exercise Summary

Using Bootstrap Dialog Box

ASP.NET Web Project Working Method and Monitoring

Summary of ASP.NET Core Razor Pages Training

ASP.NET Web Form Controls - 2

Using Predicate Builder for Filtering Data in .NET Core

Using ASP.Net Core Identity to Add a User

Debugging and Publishing an ASP.NET MVC Application

Creating a Login Form

ASP.NET Status Management

Implementing Pagination in ASP.NET Web API with Entity Framework Code

ASP.NET Web Page Optimization-Search Engine Optimization

Creating ASP.NET Web Forms using Visual Studio 2022

What is MVC?

Program File Configuration and Interpretation in ASP.NET Core

ASP.NET Web Form Controls-3 (Creating Web Pages Structure)

Adding Pagination, Sorting, and Filtering to Customers Table

Using a Pure View Model for Form Initialization

ASP.NET Web Form Controls

Handling Entity Framework Validation Errors

Implementing Features in the Vidli App

ASP.NET Data Management and Data Link Controls-2

Adding a Delete Link for Each Customer

How to Solve Microsoft SQL Exception Invalid Column Name

Optimizing click event handling for buttons

Summary of 'Login' Functionality

Partial Views in ASP.NET MVC

Introduction to ASP.NET MVC

Adding Validation to Movie Form

Building APIs with ASP.NET Web API

Two workflows to use Entity Framework

Summary of Text

Summary of the text

Using AutoMapper for Object Mapping

Creating a Movie Model and Controller in MVC

Welcome to the Ultimate Guide to ASP.NET Core

Preparing the Development Environment

Summary of Text

Migrating a Visual Studio Solution to ASP.NET 8

ASP.NET Data Management and Data Link Controls-1

GitHub Repository for Whitley mvc-5

Summary of Student Management System Tutorial

Populating Movies and Genres