Lära Overview of Model, View, Controller

Definition

Model: handles the application's data and business logic;
View: responsible for displaying data and the user interface;
Controller: manages user input, processes requests, and updates the Model or View.

In MVC, your app is split into three parts with clear roles. The Model manages data and business logic, the View displays the data to the user, and the Controller handles user input and decides what actions to take. The Controller updates or queries the Model and then selects a View to show the result. This separation makes the code easier to maintain, test, and extend.

Model.php

View.php

Controller.php


              123456
            
<?php
class Model {
    public function getMessage() {
        return "Hello from the Model!";
    }
}

Each file in this example has a clear role. Model.php provides the data, View.php displays it as HTML, and Controller.php connects them by fetching data from the Model and sending it to the View. The Controller also handles user requests. This separation of responsibilities is the core idea of MVC.

For example, the Model might store a list of items, the Controller retrieves them, and the View renders them as a list on the page.

Model.php

View.php

Controller.php


              123456
            
<?php
class Model {
    public function getItems() {
        return ["Apple", "Banana", "Cherry"];
    }
}

Keeping clear boundaries between the Model, View, and Controller makes applications easier to scale and maintain. You can change data logic without affecting the UI, update the UI without touching the data, and test each part separately. It also helps teams work in parallel without conflicts.

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Avsnitt 1. Kapitel 2

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Definition

Model: handles the application's data and business logic;
View: responsible for displaying data and the user interface;
Controller: manages user input, processes requests, and updates the Model or View.

Model.php

View.php

Controller.php


              123456
            
<?php
class Model {
    public function getMessage() {
        return "Hello from the Model!";
    }
}

For example, the Model might store a list of items, the Controller retrieves them, and the View renders them as a list on the page.

Model.php

View.php

Controller.php


              123456
            
<?php
class Model {
    public function getItems() {
        return ["Apple", "Banana", "Cherry"];
    }
}

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 1. Kapitel 2