Topics and learning objectives!

$1.$ Reading and writing files

$2.$ Model$-$View$-$Controller

$3.$ Session variables

$4.$ Object$-$Oriented Programming

Task Description

The aim of this assignment is to build upon the online store that you created in Assignment $1,$ to make

it more sophisticated.

Start by copying your code from Assignment $1($at $`$~$/$public$\_$html$/$assignments$/$assignment$1/`)$

into your new directory for Assignment $2($at $`$~$/$public$\_$html$/$assignments$/$assignment$2/`).$

This will be your starting code for Assignment $2.$

If you didn$$t complete Assignment $1,$ or don$$t have access to your code for some reason,

there will be some sample starting code available on Brightspace.

Task Description $($cont$.)$

Specific tasks and requirements of the assignment are listed later in this manual.

Here is a broad overview of the changes that we will be applying to our starting code:

$$ Adding MVC patterns to the application.

We will create new files and move code around as needed to meet the MVC design patterns.

$$ Using OOP to create classes that represent our products and categories.

These classes will be defined in the Model, and then used by the View and Controller.

$$ Storing the product data in a csv file, instead of an array.

The Model component of the application will handle interactions with the csv file,

using the relevant class $($e$.$g$.,$ the Product class works with products.csv$).$

$$ Using session variables to store information about selected category and products.

Task Requirements

$1.$ Your code should be clean, and follow good coding practises $[5$ Marks$].$

Good code will have the following qualities:

i$.$ Comments are used to explain the logic of your code.

No need to explain basic code, syntax, etc. Instead, explain why your code is written a

certain way $($e$.$g$.,$ what your if$-$statement is checking, what your array represents, etc.$).$

ii$.$ Variables have sensible$,$ human$-$readable names $($e$.$g$.,$ $categories is better than $c$).$

iii. Use indentation inside if$-$statements, loops, function definitions, multi$-$line arrays, etc.

iv$.$ Proper spacing around operators, function parameters, etc. $($e$.$g$.,$

$choice $==$ $categories$[$$i$]$ is better than $choice$==$$categories$[$$i$])$

v$.$ No redundant code $($i$.$e$.,$ code that doesn$$t do anything, or is just used for testing, etc.$)$

$2.$ Any PHP file that you make should have the following code at the bottom, so that the source

code is shown on the page $[1$ Mark$].$

echo $"$