Design patterns in Angular

  • By
  • May 1, 2021
  • Angular

 

From the perspective of design patterns, MVC, MVP and MVVM are considered to be the three most common choices. Among them, MVC stands for Model-View-Controller, MVVM stands for Model-View-ViewModel, and MVP stands for Model-View-Presenter. The use of this design pattern is intended to help develop open source applications that are easy to maintain and test. They follow best practices and lead application development. This design aims to make the user interface code more concise, easier to manage, and simplify complex code.

 

 

Different architecture presentation patterns:

 

MVC is an architecture model introduced in the 1970s. It is the first and most important choice used when designing Web applications. MVC tries to enable developers to build their applications in a way that separates the layers of the problem. This eliminates all the work required to extend, test, and maintain the application. The common method of software development is to use user commands or write related code to include the view in the definition class. This process increases the size of the view class between the user interface, data binding logic, and business operations. In short, the MVC architecture model works by reducing the size of the code to make it the correct code. This can make your code easier to manage and clean up.

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The MVC pattern design consists of three important parts: the model model describes the business logic, and is characterized by a set of classes. It is used to design business rules for data related to data modification or processing. Views The views here represent UI components, such as HTML, CSS, and jQuery. This view displays the data sent back by the controller in the form of results. You can also use the view to convert the model to the UI. Subscribe to our exclusive news. Subscribe to our popular newsletter. In order to process incoming requests, the controller is very sensitive. Through the displayed model, the controller obtains the user’s data. Between the model and the view.

The controller acts as a facilitator. The benefits of the MVC model speed up the development process: MVC architecture speeds up parallel development. Therefore, when used in a web application development project, one developer can work in the view, while another developer can work in the controller at the same time. This allows you to complete the project faster than expected. The ability to provide multiple views: The MVC model allows you to create multiple views in the model. As you can see here, business logic and data are separated from the display, and code duplication is very limited. Asynchronous technical support: MVC architecture can be integrated with all popular JavaScript frameworks.

This means that you can use the MVC architecture with site-specific browsers, PDF files, and desktop widgets. MVC supports asynchronous technology so you can build apps that load faster. The changes do not affect the entire model. Compared to company rules, web application user interfaces tend to change even further. We change fonts, screen layouts, colors, etc. frequently and continue to add new device support for tablets and mobile phones. The MVC model returns data without formatting. MVC returns the data without applying the format. This means that you can use the same component and call it using any interface.

A development platform that supports SEO: The MVC design pattern provides support for Web applications or pages that support SEO. In this way, you can propose SEO-enabled URLs that can be used to increase access to your application or website. MVP model If you compare the MVP model with the MVC model, you will find many similarities. In MVP, “P” stands for the presenter. Page controls are managed and displayed by the view. The presenter representing the view is responsible for handling all UI events. Presenter collects all user input and moves it to the left and right of the model. This will send the results to the view.

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The presenter starts all gesture work from the end of the logic, such as navigation instructions and button presses. In terms of implementation, MVP is a composite model, but if it can be used as a well-designed solution, it may bring many benefits. In most cases, ASP.NET Web Forms and Windows Forms applications choose MVP. For Android developers, this is the right choice because it can be used in Java applications. The MVP pattern design consists of three important parts, which are: as can be seen from the case of the model MVC, the model here is also used to describe business logic and is characterized by a set of classes. It is used to design business rules for data related to data modification or processing.

Look again, like MVC, the views here represent UI components, such as HTML, CSS, and jQuery. This view displays the data sent back by the controller in the form of results. You can also use the view to convert the model to the UI. The presenter is solely responsible for handling all UI events on behalf of the presenter view. The view provides input from the user, and the model is used to filter the data and propagate the results to the view. The presenter and the view are completely different, but they use interfaces to communicate with each other. The advantages of the MVP architecture make it easier to debug applications.

MVP introduces three different abstraction layers to make debugging applications easier. Here, the business logic is completely separated from the View, so you can run unit tests while developing the application. Code reusability: For MVP, you can have multiple presenters to control the view, so you can reuse code better. Well, this is very useful. There is no plan to have only one presenter control the different views. Strengthen separation of concerns. MVP works by separating business logic and persistence logic from Activity and Fragment classes. This will better isolate your concerns. Model-View-View Model (MVVM) pattern MVVM is defined from the MVC pattern. For the MVVM pattern, you can see that there is two-way data binding between the view and the view model.

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Here, you can make changes automatically within the view model and in the view. In order to change the view model, the view model utilizes the observer mode. MVVM mode is mainly used in Silverlight, WPF, nRoute, Caliburn, etc. Designing the MVVM pattern includes three important parts: Like the model MVC and MVP, we will also use the model here. It is characterized by business logic and a set of classes. It is used to design business rules for data related to data modification or processing. Look again, like MVC and MVP, the views here represent UI components, such as HTML, CSS, and jQuery. This view displays the data sent back by the controller in the form of results. You can also use the view to convert the model to the UI.

Presenting ViewModel methods and functions is the responsibility of View-Model. You need to use the model, maintain the state of the view, and provide commands to activate events in the view. The maintainability advantage of the MVVM architecture: Isolate different types of code more clearly, allowing you to easily access and change the smaller key parts of the code. This allows you to speed up the release of new versions and maintain agility. Testability: Using the MVVM architecture, every part of the code is kept in good condition. If implemented in a proper way, all internal and external dependencies will be preserved from the code that contains the core logic of the application you plan to test. Therefore, if you intend to write unit tests for your core logic, it is much easier.

Author-
Janhavi Kulkarni | SevenMentor Pvt Ltd.

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