MVC architecture pattern in Software Engineering - Mini Project: Build & Apply

Understanding MVC Architecture Pattern

📖 Scenario: You are learning how software applications organize their parts to work smoothly. One popular way is called the MVC pattern, which splits the app into three parts: Model, View, and Controller. This helps keep things clear and easy to manage.

🎯 Goal: Build a simple example that shows how the Model, View, and Controller parts work together in the MVC pattern.

📋 What You'll Learn

Create a Model that holds data about a product

Create a View that shows the product's name and price

Create a Controller that updates the product's price

Show how the Controller changes the Model and the View updates accordingly

💡 Why This Matters

🌍 Real World

MVC is used in many software applications to organize code clearly, making it easier to build and update features.

💼 Career

Understanding MVC is important for software developers, especially those working on web and desktop applications, as it is a common design pattern.

1

Create the Model

Create a class called ProductModel with two attributes: name set to "Laptop" and price set to 1000.

Software Engineering

# Define the ProductModel class with name and price attributes
# Your code here

Hint

Use a class with an __init__ method to set the product's name and price.

2

Create the View

Create a class called ProductView with a method display_product that takes a product parameter and returns a string showing the product's name and price in the format: "Product: Laptop, Price: 1000".

Software Engineering

class ProductModel:
    def __init__(self):
        self.name = "Laptop"
        self.price = 1000

# Define ProductView class with display_product method
# Your code here

Hint

The display_product method should use an f-string to format the output.

3

Create the Controller

Create a class called ProductController with an __init__ method that takes model and view parameters and stores them. Add a method set_price that takes a price parameter and updates the model's price.

Software Engineering

class ProductModel:
    def __init__(self):
        self.name = "Laptop"
        self.price = 1000

class ProductView:
    def display_product(self, product):
        return f"Product: {product.name}, Price: {product.price}"

# Define ProductController class with __init__ and set_price methods
# Your code here

Hint

The controller connects the model and view and updates the model's price.

4

Connect and Use MVC Components

Create instances of ProductModel, ProductView, and ProductController. Use the controller's set_price method to change the price to 1200. Then call the view's display_product method with the model and store the result in a variable called output.

Software Engineering

class ProductModel:
    def __init__(self):
        self.name = "Laptop"
        self.price = 1000

class ProductView:
    def display_product(self, product):
        return f"Product: {product.name}, Price: {product.price}"

class ProductController:
    def __init__(self, model, view):
        self.model = model
        self.view = view
    
    def set_price(self, price):
        self.model.price = price

# Create instances of model, view, controller
# Use controller to set price to 1200
# Call view.display_product with model and save to output
# Your code here

Hint

Instantiate the classes, update the price via the controller, then get the display string from the view.