I need to create a program in which the user can take different tests. As i dont want to copy paste my code all over for every test, i have tried to setup a class for that purpose - but i have problems with this class.
Error message = undefined variables or method in 'display_test'
I have predefined som test as a .txt file
I want to choose the file in the class depending on what the user answer - is that possible?
Class code:
class Test
#correct_answers = 0
def display_question( question, options, answer )
puts question
options.each_with_index { |option, idx| puts "#{ idx + 1 }: #{ option
}" }
print 'Answer: '
reply = gets.to_i
if answer == reply
puts 'Correct!'
#correct_answers += 1
puts "#{#correct_answers}"
else
puts 'Wrong. The correct answer was: ' + answer.to_s
end
end
def display_test()
f = File.new(userinput, 'r')
while ! (f.eof?) #logikken til at splitte
line = f.gets()
question = line.split("|")
question[1] = question[1].split(";")
display_question question[0], question[1], question[2].to_i
end
end
display_test
puts "________________________________________________________"
puts "Total score:"
puts "You've got" + " #{#correct_answers}" + " correct answers!"
Before hand i have used ("geografitest.txt") instead of username in the File.new so it looked like this:
f = File.new('geografitest.txt','r')
But now i am trying to let the user decide what test to take.
I am very new to ruby, so please bear with me.
I have tried to do it this way, which obviously is not working.
puts "Which test do you want to take?"
select = 0
while (select != 3)
puts "Press 1 to take Geografi test."
puts "Press 2 to take Math test."
puts "Press 3 to take Religion test."
puts "Press 3 to exit"
select = gets.chomp.to_i
if (select == 1)
gets.chomp = userinput
userinput =`geografitest.txt`
echo $userinput
end
if (select == 2)
gets.chomp = userinput
userinput =`matematiktest.txt`
echo $userinput
end
if (select == 3)
gets.chomp = userinput
userinput =`religionstest.txt`
echo $userinput
end
if (select > 4)
puts "Not a correct selection"
elsif (select == 4)
puts "Goodbye"
end
end
abort
So my questions is now;
How can i make the user choose what test to take? Can i make a variable instead of the textfile as i have tried, but in a different way? Or is there a smarter way?
And in what way is my class wrong and how do i fix it? I know its not the way to make it, but i simple cant get my head around how to make it right.
Please help a rookie out.
Cheers!
You can pass file as dependency to you Test class based on user input with object constructor. Something like this
class Test
attr_reader :correct_answers_count
def initialize(file)
#file = file
#correct_answers_count = 0
end
#other code goes here
end
loop do
case user_input = gets.chomp
when '1'
file_name = 'some_file1'
when '2'
file_name = 'some_file1'
when '3'
break
else
puts 'wrong variant'
end
test = Test.new(File.new(file_name, 'r'))
test.display
end
I have some troubles with my code using Ruby. its just for a terminal program, so no website or anything.
In my code I Will have the user create a login. Then I will have the user to login, but I cant seem to figure out how to check if password or username is correct.
The program should compare whatever the user types in as a username/password with the file (userdatabase) - I think i got that right.
Now I am trying to stop the user if the input is not found in the user database, using a while loop, but i cant seem to make that work.
Code:
puts "What will be your user name?"
username = gets.chomp
puts "What will be your password?"
password = gets.chomp
puts "Please repeat your password."
passwordsafe = gets.chomp
f = File.new("student.txt", "w+")
f.puts username + ";" + password + ";" + passwordsafe
f.close
puts "well done, you have created a new user."
lines = IO.readlines("student.txt")
lines.each{|line| print(line)}
puts "now you need to login."
puts "What is your username?"
username = gets.chomp
File.open("student.txt") do |f|
f.any? do |line|
while line.include?(username)
end
end
elsif puts "Sorry your username was incorrect"
end
#lines = IO.readlines("student.txt")
#lines.each{|line| (line)}
puts "what is your password?"
password = gets.chomp
The while is unnecessary.
The username check currently like this:
File.open("student.txt") do |f|
f.any? do |line|
while line.include?(username)
end
end
Could be like this:
File.open("student.txt").each_line.any? do |line|
line.include?(username)
end
Or collapsed to a single line like this:
File.open("student.txt").each_line.any?{ |l| l.include?(username) }
Check the docs on the any? method to make sure you understand what it's expecting: http://ruby-doc.org/core-2.4.2/Enumerable.html#method-i-any-3F
As for the rest of the syntax errors, I'll leave those up to you ;)
I have this code:
def name_of_client
puts "Hello sir/madam; please enter your name: "
name = gets.chomp.upcase
puts "Welcome to the Great Bank, #{name}. Would you like to enter your seriously insecure account? (Y/N)"
end
def get_response
answer = gets
if answer == "Y" || answer == "y"
puts 'Sure thing... '
elsif answer == "N" || answer== "n"
puts "Logging you out now. "
end
end
name_of_client
get_response
Why are the strings not printed when I type "Y" or "N"?
gets adds a new line to the answer variable. use gets.chomp or gets.strip instead. In future, I would recommend using the pry gem as shown below which pauses execution just like debugger does in javascript. To install pry open your terminal window (assuming you're running linux or macOS) and run gem install pry. You can then use it as shown below.
require "pry"
def get_response
answer = gets.strip
binding.pry
if answer == "Y" || answer == "y"
puts 'Sure thing... '
elsif answer == "N" || answer== "n"
puts "Logging you out now. "
end
end
get_response
I've seen similar answers to this question but I think I need something more specific to my code. Basically I've called the row from the CSV file but now I need to delete the called row. Sounds simple as I write this yet here I am asking you all for help. I know there is a lot of code here but I figured the more there is the more easier you will be able to understand the context. Apologies if there is too much noise in the code.
def delete_user_menu
puts "============================================"
delete_users_active_list
puts " "
puts "Please type in the name of the user you wish to eradicate: "
print "> "
eradicate(gets.chomp)
end
def eradicate(delete_input)
delete_row = delete_authentication(delete_input)
if delete_row
puts "Are you sure you want to delete #{delete_input} from the database?"
puts "[y]es or [n]o"
print "> "
delete_answer = gets.chomp
if delete_answer == "y"
delete_user
after_deletion_menu
elsif delete_answer == "n"
puts "Close call! Taking you back to main menu."
sleep 2
admin_main_menu
else
puts "Input not recognised. Please try again."
eradicate(delete_input)
end
else
puts "User not recognized. Please try again."
sleep 1
delete_user_menu
end
end
def delete_user
# this is where the delete user function needs to go
after_deletion_menu
end
def after_deletion_menu
puts " "
puts "User deleted! What would you like to do now?"
puts "1. Delete another user"
puts "2. Back to main menu"
print "> "
after_deletion_choice = gets.chomp
if after_deletion_choice == "1"
delete_user_menu
elsif after_deletion_choice == "2"
admin_main_menu
else
puts "Input not recognized. Please try again."
after_deletion_menu
end
end
def delete_users_active_list
CSV.foreach("./users.csv", headers: true) do |row|
username = row['username']
puts "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
puts "Username: #{username}"
end
end
def delete_authentication(username)
CSV.open('users.csv', headers: true).find { |row| row['username'] == username }
end
I've had a look at this question How to remove a row from a CSV with Ruby
but I don't fully understand the answers, hence why I'm here. Any help is much appreciated.
I looked at the link. First, they are reading the entire csv file into table:
table = CSV.table(#csvfile)
then deleting the row from table:
table.delete_if do |row|
row[:foo] == 'true'
end
Finally, they are completely replacing the original file with the new table minus the row:
File.open(#csvfile, 'w') do |f|
f.write(table.to_csv)
end
This is generally how you have to do this kind of operation when you are dealing with a file. It's not like a database.
EDIT - in your case:
delete_user(delete_input)
...
def delete_user(user)
...
table.delete_if { |row| row[:username] == user }
...
i am new to programming in ruby, and i am trying to get the value of json['earning_rate_hr'] but i get an error, in '[]': no implicit conversion of String into Integer (TypeError)
i know and i understand the error, however this is not my main question here is my file :
checkingchecker.rb :
#require_relative '../lib/hackex/net/typhoeus'
require_relative '../lib/hackex'
require 'rubygems'
require 'json'
file = 'accounts1.txt'
f = File.open file, 'r'
puts "MADE BY THE PEOPLE, FOR THE PEOPLE #madebylorax"
puts ""
puts "--------------------------------------------------------"
puts ""
while line = f.gets
line = line.chomp.split(';')
email, password = line
puts "logging in as " + email
HackEx.LoginDo(email, password) do |http, auth_token, user|
puts "getting info..."
user = HackEx::Request.Do(http, HackEx::Request.UserInfo(auth_token))['user']
puts "receieved user info!"
bank = HackEx::Request.Do(http, HackEx::Request.UserBank(auth_token))['user_bank']
puts "recieved bank info!"
json = HackEx::Request.Do(http, HackEx::Request.UserSpam(auth_token))['spam']
puts "recieved spam info!"
puts json['earning_rate_hr'] #error line, the error is because this is an array, and it cant be turned into integer, i was wondering if there is a way to use puts on it without trying to make it an integer
userchecking = bank["checking"]
checking = userchecking.scan(/.{1,3}/).join(',')
puts email + " has in Checking: BTC #{checking}"
puts ""
puts "--------------------------------------------------------"
puts ""
end
end
i tried to do puts json, it puts items like this one :
{"id"=>"9867351", "user_id"=>"289108", "victim_user_id"=>"1512021",
"victim_ip"=
"86.60.226.175", "spam_level"=>"50", "earning_rate_hr"=>"24300", "total_earning s"=>"13267800", "started_at"=>"2015-11-01 07:46:59",
"last_collected_at"=>"2015- 11-24 01:46:59"}
what i want to do is select the earning_rate_hr for each one of them and add them together, however i do not have a clue on how to do that, since the error is not fixed and i cant get the value of it
ps : i tried turning it into a Hash, and i also tried using .first, but .first only shows the firs one, i want to show all of them, thank you
I know you from line messenger, I haven't used ruby codes in a long time and this one keeps giving me cloudflare errors, I'm not sure if its because of server downtime/maintainance or whatever but yeah anyway heres your script, enjoy farming ;) -LineOne
PS, I changed a few strings to make it look a lil cleaner so you can see the spam income easier, and added the sleep (1) because sleeping for one second before reconnecting helps to prevent cloudflare errors
also you don't need to require json or rubygems in your hackex scripts because its required in the library so its all covered pre-user-input/script
require_relative 'libv5/lib/hackex'
while 1<2
begin
print'Filename: '
fn=gets.chomp
file = fn+'.txt'
f = File.open file, 'r'
puts "MADE BY THE PEOPLE, FOR THE PEOPLE #madebylorax" #helped by lineone
puts ""
puts "--------------------------------------------------------"
puts ""
while line = f.gets
line = line.chomp.split(';')
email, password = line
HackEx.LoginDo(email, password) do |http, auth_token, user|
puts "Retrieving Info..."
puts''
user = HackEx::Request.Do(http, HackEx::Request.UserInfo(auth_token))['user']
bank = HackEx::Request.Do(http, HackEx::Request.UserBank(auth_token))['user_bank']
json = HackEx::Request.Do(http, HackEx::Request.UserSpam(auth_token))['spam']
cash_count=0
tot_count=0
json.each do |j|
earn_rate = j['earning_rate_hr']
total= j['total_earnings']
cash_count+=earn_rate.to_i
tot_count+=total.to_i
end
print "#{email}: current earnings: #{cash_count} per hour, Total earnings #{tot_count},"
userchecking = bank["checking"]
checking = userchecking.scan(/.{1,3}/).join(',')
puts " #{checking} BTC in Checking"
puts ""
puts "--------------------------------------------------------"
puts ""
sleep 1
end
end
rescue
puts"#{$!}"
end
end
Thats fine you can also calculate the total income of your farms by adding new variables at the top example a=0 then adding the number at the end a+=tot_count
This should help:
earning_rates = json.map{|e| e["earning_rate_hr"]}
puts "Earning rates per hour: #{earning_rates.join(" ")}"
puts "Sum of earning rates: #{earning_rates.map{|e| e.to_i}.inject{|sum, x| sum + x}}"