Sha256: fd949446eb81415ea1948b0a79723c79c686a38139fc4f2c4f1c248d170d8512
Contents?: true
Size: 1.37 KB
Versions: 14
Compression:
Stored size: 1.37 KB
Contents
class StudentList
private
attr_accessor :students, :gen_id, :typer
public
def initialize(typer)
self.students = []
self.gen_id = students.count + 1
self.typer = typer
end
def read_file(file_path)
raise ArgumentError.new("File not found #{file_path}") unless File.file?(file_path)
hash_students = typer.read_file(File.read(file_path))
self.students = hash_students.map{|h| Student.from_hash(h)}
nextId
end
def write_file(file_path)
hash_students = students.map(&:to_hash)
File.write(file_path, typer.write_file(hash_students))
end
def get_student(stud_id)
students.find{|s| s.id == stud_id}
end
def sorted
students.sort_by(&:fio)
end
def add_student(student)
students << student
student.id = gen_id
nextId
end
def get_students_pag(k,n,existing_data = nil)
skip = (k-1) * n
new_data = students[skip, n].map{|s| StudentShort.from_student_class(s)}
return DataListStudentShort.new(new_data) if existing_data.nil?
existing_data.replace_objects(new_data)
existing_data
end
def replace_student(student_id, student)
idx = student.find{|s| s.id==student.id}
self.students[idx]=student
end
def remove_student(student_id)
self.students.reject! {|s| s.id==student_id}
end
def count
self.students.count
end
def nextId
self.gen_id=students.max_by(&:id).id + 1
end
end
Version data entries
14 entries across 14 versions & 5 rubygems