这是我的ruby代码。当你运行它并按1时，它会询问你姓名和出生日期。我想在输入姓名和出生日期后给用户一个个人号码。此外，我会很高兴搜索用户编号，以便在文件中找到它们。希望有人可以帮忙！
我写了#HELP在这里我需要帮助。代码工作正常，但我不知道如何编码我的问题......
file = File.new("Capgemini.txt", "a") #load information on startup, and create the file
class Customer # Making a class for the whole code to call it up later in the code
def new_custom
er # The costumer method
prompt = "> " #creating a class for prompt here, since I use it multiple times
puts"Full name of the person?"
print prompt
@name = gets.chomp.upcase #A global variabel which i can use outside the class
if File.read("Capgemini.txt").include?(@name) #so you don't register the same name, twice
puts"This name is already stored. Returning you to the main menu."
puts "_____________________________________________"
else
#puts"What is your employee number?"
#print prompt
#@number = gets.chomp #Global
puts"Date of birth? (DD/MM/YYYY)"
print prompt
@birth = gets.chomp #Global
puts"Thanks for the input."
puts "_____________________________________________"
puts"Is this information correct? " #Giving the user all the information back to check for mistakes, etc.
puts ("Name: #{@name} Number: #{@number} Date of birth: #{@birth}")
puts "_____________________________________________"
puts "Yes or No?"
print prompt
while user_input = gets.chomp.upcase #loop while getting user input
case user_input
when "YES"
file = File.new("Capgemini.txt", "a")
file.puts("#{@name}, Number: #{@number}, Date of birth: #{@birth}") #puts the information into the textfile, separeted by commas
file.close
#NEED HELP HERE
number = File.readlines('Capgemini.txt')
puts "_____________________________________________"
puts
puts "Your employee number: "
puts "_____________________________________________"
#NEED HELP OVER HERE^
puts
puts "The information has now been stored in the Capgemini.txt file."
puts "_____________________________________________"
break # make sure to break so you don't ask again
when "NO"
puts "The information has not been stored. Returning you to the main menu."
puts "_____________________________________________"
break # and again
else
puts "Please either write 'Yes' or 'No'"
print prompt # print the prompt, so the user knows to re-enter input
end
end
end
end
def search_customer(search)
keyword = File.readlines('Capgemini.txt') #converting all the lines into indexes in an Array
matches = keyword.select { |name| name[/#{search}/] } #
if File.read("Capgemini.txt").include?(search) #An if statement that will print the results if the textfile matches the keyword
puts "_____________________________________________"
puts ("Search results including the word/number/birth " + search + ":")
puts "_____________________________________________"
puts matches
puts "_____________________________________________"
else #If not it will give the user feedback that its not there
puts "_____________________________________________"
puts ("Sorry, we couldnt find #{search} in the textfile.")
puts "_____________________________________________"
end
end
def all_customers
f = File.new("Capgemini.txt","r")
while !(f.eof?)
line = f.gets()
puts line
end
end
def delete_customer
puts("What customer do you want to delete?")
print("> ")
keyword = gets.chomp.upcase
txt_file = File.readlines('Capgemini.txt')
matches = txt_file.select { |name| name[/#{keyword}/] }
search_results = matches.length
if search_results > 1
puts "_____________________________________________"
puts "The name you entered gave these outputs:"
puts ""
puts matches
puts ""
puts "Please specify the name better, as we only allow one person to be deleted at the time. \nReturning you to the main menu."
puts "_____________________________________________"
else
if File.read("Capgemini.txt").include?(keyword) #An if statement that will print the results if the textfile matches the person
puts "_____________________________________________"
puts ("Is this the person you want to delete?")
puts matches
puts "_____________________________________________"
puts "Yes or No?"
print "> "
while user_input = gets.chomp.upcase # loop while getting user input
case user_input
when "YES"
no_matches = txt_file.reject { |name| name[/#{keyword}/] }
File.open('Capgemini.txt','w+'){|out| out.puts no_matches}
puts"User has been deleted. Returning you to the main menu."
puts "_____________________________________________"
break # make sure to break so you don't ask again
when "NO"
puts "User will not be deleted. Returning you to the main menu."
puts "_____________________________________________"
break # and again
else
puts "Please either write 'Yes' or 'No'"
print "> " # print the prompt, so the user knows to re-enter input
end
end
puts "_____________________________________________"
else #If not it will give the user feedback that its not there
puts "_____________________________________________"
puts ("Sorry, we couldnt find #{keyword} in the textfile.")
puts "_____________________________________________"
end
end
end
end
customer = Customer.new
require 'io/console'
select = 0
prompt = "> "
puts
puts
puts "Welcome to Capgemini Sogeti Denmark"
puts "_____________________________________________"
loop do (select != 7)
puts
puts("Press 1 to register a new user.\nPress 2 to search for a employee or keyword within the textfile.\nPress 3 to show all customers.\nPress 4 to delete a customer.\nPress 5 to exit.")
puts "_____________________________________________"
select = STDIN.getch.to_i
if(select == 1)
customer.new_customer
elsif(select == 2)
puts("What customer/keyword do you want to search for?") #You can search for a keyword, like forexample 'Manzur' which will prompt you back with every user names Manzur
print prompt
customer.search_customer(gets.chomp.upcase)
elsif(select == 3)
customer.all_customers
puts "_____________________________________________"
elsif(select == 4)
customer.delete_customer
elsif(select == 5)
puts
puts "The application will now exit."
puts "_____________________________________________"
break
else
puts"Invalid input. Please try again."
puts "_____________________________________________"
end
end
答案 0 :(得分：0)
我不确定您希望如何生成数字，但这样的事情可能有效。
这将始终为您提供文本文件中最高的数字，并为其添加1。
请记住，这种方法对于相当多的员工来说会很慢。
if File.exist?('Capgemini.txt')
number = File.readlines('Capgemini.txt')
@number = 1
number.each do |x|
customer = x.split(',')
customer_number = customer[1].gsub('Number: ', '').to_i
if customer_number >= @number
@number = customer_number + 1
end
end
else
@number = 1
end
输出：
BOB ROSS, Number: 1, Date of birth: 07/07/2007
WILL SMITH, Number: 2, Date of birth: 08/08/2008
JIM BOB, Number: 3, Date of birth: 09/09/2009
您还可以使用类似的方法搜索数组：
number = File.readlines('Capgemini.txt')
number.each do |x|
customer = x.split(',')
customer_name = customer[0]
customer_number = customer[1].gsub('Number: ', '').to_i
customer_bday = customer[2].gsub('Date of birth: ', '')
if customer_name == some_variable
puts x
end
end
答案 1 :(得分：0)
关于这段代码（你的和我的）有很多话要说。使用-w选项运行Ruby以显示未使用的变量，它指出可能的错误，如：
$ ruby -w t_op.rb
t_op.rb:180: warning: mismatched indentations at 'end' with 'class' at 3
t_op.rb:191: warning: possibly useless use of != in void context
t_op.rb:1: warning: assigned but unused variable - file
有很多File.read，我已经用IO.readlines替换了它们，它创建了一个行数组（对于不是千兆字节的文件，可以正常）。它还允许存储用户号码。
与Ruby一样，有很多方法可以做同样的事情。
require 'io/console'
class Customer
attr_reader :file
def initialize(p_file_name)
@file_name = p_file_name
refresh
@next_number = @numbers.max + 1
end
def refresh
@lines = IO.readlines(@file_name) # load information on startup
@numbers = []
@names = @lines.collect do | line |
# the line has the format : <name>, Number: <number>, Date of birth: <birth>
idxn = line.index(', Number')
idxd = line.index(', Date')
@numbers << line[idxn + 10...idxd].to_i
line[0...idxn]
end
end
def new_customer
prompt = "> " # creating a local variable for prompt, since I use it multiple times
puts 'Full name of the person ?'
print prompt
name = gets.chomp.upcase
if @names.include?(name) #so you don't register the same name, twice
then
puts_underlined 'This name is already stored. Returning you to the main menu.'
else
puts 'Date of birth? (DD/MM/YYYY)'
print prompt
birth = gets.chomp # TODO check validity
puts_underlined 'Thanks for the input.'
puts 'Is this information correct ?' # Giving the user all the information back to check for mistakes, etc.
puts_underlined "Name: #{name} Number: #{@next_number} Date of birth: #{birth}"
puts 'Y(es) or N(o)'
print prompt
while user_input = gets.chomp.upcase #loop while getting user input
case user_input[0]
when 'Y'
line = "#{name}, Number: #{@next_number}, Date of birth: #{birth}"
@next_number +=1
@lines << line
File.open(@file_name, 'a') do | file | # open the file for append, ensure it will be closed by the end of the block
file.puts line # puts the information into the textfile, separeted by commas
end
puts
puts_underlined "The information has now been stored in the #{@file_name} file."
break # make sure to break so you don't ask again
when 'N'
puts_underlined 'The information has not been stored. Returning you to the main menu.'
break # and again
else
puts 'Please either write Y(es) or N(o)'
print prompt # print the prompt, so the user knows to re-enter input
end
end
end
end # new_customer
def search_customer(search)
matches = @lines.grep(/#{search}/)
unless matches.empty? # An if statement that will print the results if the textfile matches the keyword
puts_underlined()
puts_underlined "Search results including the word/number/birth #{search} :"
puts matches
puts_underlined()
else # If not it will give the user feedback that it's not there
puts_underlined()
puts_underlined "Sorry, we couldnt find #{search} in the text file."
end
end
def search_customer_number(search)
index = @numbers.index(search.to_i)
if index
then # found, print the user
puts_underlined()
puts_underlined "This is the user number #{search} :"
puts @lines[index]
puts_underlined()
else # not found, it will give the user feedback that it's not there
puts_underlined()
puts_underlined "Sorry, we couldnt find the user #{search}."
end
end
def all_customers
puts @lines
end
def delete_customer
puts 'Which customer do you want to delete ?'
print '> '
keyword = gets.chomp.upcase
matches = @lines.grep(/#{keyword}/)
case matches.size
when 0 # not found, give the user feedback that it's not there
puts_underlined()
puts_underlined "Sorry, we couldnt find #{keyword} in the textfile."
when 1 # print the results if the textfile matches the person
puts_underlined()
puts 'Is this the person you want to delete ?'
puts_underlined matches
puts 'Yes or No?'
print '> '
while user_input = gets.chomp.upcase # loop while getting user input
case user_input
when 'YES'
no_matches = @lines.reject { | line | line[/#{keyword}/] }
File.open(@file_name, 'w+') { | out | out.puts no_matches }
refresh
puts_underlined 'User has been deleted. Returning you to the main menu.'
break # make sure to break so you don't ask again
when 'NO'
puts_underlined 'User will not be deleted. Returning you to the main menu.'
break # and again
else
puts "Please either write 'Yes' or 'No'"
print '> ' # print the prompt, so the user knows to re-enter input
end
end
else
puts_underlined()
puts 'The name you entered gave these outputs:'
puts
puts matches
puts
puts_underlined "Please specify the name better, as we only allow one person to be deleted at the time. \nReturning you to the main menu."
end
end # delete_customer
end # class Customer
def puts_underlined(p_text = nil)
puts p_text if p_text
puts '_____________________________________________'
end
file_name = 'Capgemini.txt'
customer = Customer.new(file_name)
prompt = "> "
puts
puts_underlined 'Welcome to Capgemini Sogeti Denmark'
loop do
puts
puts_underlined "Press 1 to register a new user.\nPress 2 to search for a employee.\nPress 3 to search for a keyword within the textfile.\nPress 4 to show all customers.\nPress 5 to delete a customer.\nPress 6 to exit."
select = STDIN.getch.to_i
case select
when 1
customer.new_customer
when 2
puts 'Which customer number do you want to search for ?'
print prompt
customer.search_customer_number(gets.chomp.upcase)
when 3
puts 'What keyword do you want to search for ?' # You can search for a keyword, like for example 'Manzur' which will prompt you back with every user names Manzur
print prompt
customer.search_customer(gets.chomp.upcase)
when 4
customer.all_customers
puts_underlined()
when 5
customer.delete_customer
when 6
puts
puts_underlined 'The application will now exit.'
break
else
puts_underlined 'Invalid input. Please try again.'
end
end