Simple LMS with File Loading

This goal of this assignment is to make a simple Learning Management System (LMS) in Ruby that loads student and subject data from files and enables access to each student's subjects and scores.

Features

• Loads student and subject data from files into Ruby objects.
• Provides access to each student's subjects and scores.
• Calculates student percentage and grade.
• Exports data to CSV and generates PDF reports for individual students.

Files and Data

Create two files to represent students and subjects data: students.csv and subjects.csv.

students.csv

Each line represents a student in the following format:

student_id,name,age

Example content:

1,John Doe,20
2,Jane Smith,22
3,Emily White,19

subjects.csv

Each line represents a student's subject enrollment in the following format:

student_id,subject_name,score

Example content:

1,Math,85
1,Science,92
2,Math,78
3,English,88
3,Science,91

Classes

Student Class

• Attributes:

  • id
  • name
  • age
  • subjects (an array of Subject instances)

• Methods:

  • add_subject(subject): Adds a Subject object to the student's subjects array.

Subject Class

• Attributes:

  • name
  • score
  • student_id

• Methods:

  • initialize(name, student_id ,score): Initializes the Subject object with a name and score.

LMS Class

• Attributes:

  • students (a hash with student ID as the key and Student object as the value)

• Methods:

  • load_students(file_path): Loads student data from students.csv and creates Student objects.
  • load_subjects(file_path): Loads subjects from subjects.csv and adds them to the corresponding Student objects.
  • find_student(id): Finds and returns a Student object by ID.
  • student_scores(id): Returns a list of subjects and scores for a given student ID.
  • student_percentage(student_id): Calculates the percentage of score of all subjects for a student.
  • student_grade(student_id): Determines the letter grade based on the percentage.
  • export_students: Exports all students' basic information to a CSV file.
  • export_subject_marks: Exports all students' subject marks to a CSV file.
  • export_student_report(student_id): Generates a PDF report for a student, including their details, subjects, marks, percentage, and grade.

Usage

1. Load student and subject data from students.csv and subjects.csv.
2. Use LMS methods to access student data and export reports.

Submission Instructions

It should be one file name lms.rb which should include all the classes, attributes and methods